1. The utility model provides a on-vehicle domestic oxygenerator of stable form which characterized in that: the device comprises a damping mechanism (100), a clamping mechanism (200), an adjusting mechanism (300), a moving mechanism (400) and an oxygen generator body (5), wherein the clamping mechanism (200) is positioned above the damping mechanism (100), the oxygen generator body (5) is positioned above the clamping mechanism (200), the adjusting mechanism (300) is positioned on the right side of the damping mechanism (100), and the moving mechanism (400) is positioned on the outer side of the damping mechanism (100);

fixture (200) are including drive case (201), the inboard swing joint of drive case (201) has two-way threaded rod (202), the outside threaded connection of two-way threaded rod (202) has two screw thread pieces (203), two the equal fixedly connected with stopper (204) in top of screw thread piece (203), two the equal fixedly connected with activity clamp splice (205) in top of stopper (204), two the equal fixedly connected with silica gel pad (206) in one side that activity clamp splice (205) are relative, the left end fixedly connected with antifriction bearing (207) of two-way threaded rod (202), the right-hand member fixedly connected with activity turning handle (208) of two-way threaded rod (202).

2. The stable vehicle-mounted household oxygen generator according to claim 1, wherein: damper (100) are including surge tank (101), two fixed block (102), two of the interior diapire fixedly connected with of surge tank (101) fixedly connected with connecting rod (103) between the relative one side of fixed block (102), the outside swing joint of connecting rod (103) has two solid fixed ring (104).

3. A stable vehicle-mounted domestic oxygen generator according to claim 2, wherein: two fixedly connected with annular spring (105) between the relative one side of solid fixed ring (104), the top swing joint of solid fixed ring (104) has regulation pole (106), the top fixedly connected with buffer spring (107) of fixed block (102).

4. A stable vehicle-mounted domestic oxygen generator according to claim 3, wherein: the shock absorption device is characterized in that the top of the buffer spring (107) is fixedly connected with a shock absorption plate (108), the inner bottom wall of the shock absorption box (101) is fixedly connected with a shock absorption rod (109), and the inner bottom wall of the shock absorption box (101) is fixedly connected with a shock absorption spring (110).

5. A stable vehicle-mounted household oxygen generator according to claim 4, wherein: the damping box is characterized in that supporting legs (111) are fixedly connected to four corners of the bottom of the damping box (101), wear-resistant pads (112) are fixedly connected to the bottoms of the supporting legs (111), and sliding blocks (113) are fixedly connected to the left side and the right side of the damping plate (108).

6. The stable vehicle-mounted household oxygen generator according to claim 1, wherein: adjustment mechanism (300) are including fixed outer pole (301), the inboard swing joint of fixed outer pole (301) has movable interior pole (302), the bottom fixedly connected with locating piece (303) of movable interior pole (302).

7. A stable vehicle-mounted household oxygen generator according to claim 6, wherein: the outer side of the movable inner rod (302) is fixedly connected with an extension spring (304), one side of the extension spring (304), which is far away from the movable inner rod (302), is fixedly connected with a limit button (305), and the top end of the movable inner rod (302) is fixedly connected with a movable push handle (306).

8. The stable vehicle-mounted household oxygen generator according to claim 1, wherein: the moving mechanism (400) comprises a fixed screw block (401), the inner side of the fixed screw block (401) is in threaded connection with a movable screw rod (402), and the bottom end of the movable screw rod (402) is fixedly connected with a first bearing (403).

9. A stable vehicle-mounted household oxygen generator according to claim 8, wherein: the bottom of the first bearing (403) is fixedly connected with a moving wheel (404), the top end of the movable screw (402) is fixedly connected with a manual rotating handle (405), and the outer side of the moving wheel (404) is fixedly connected with a brake.

10. A stable vehicle household oxygen generator according to claim 4 or 8, wherein: the top fixedly connected with drive case (201) of damper plate (108), the top swing joint of drive case (201) has oxygenerator body (5), fixed outer pole (301) of right side fixedly connected with of damper box (101), fixed spiral shell piece (401) of the equal fixedly connected with in the left and right sides of damper box (101).

Background

The oxygen generator is a kind of machine for preparing oxygen, its principle is to utilize air separation technology, compress the air with high density at first and then utilize the different condensation point of each ingredient in the air to make it carry on the gas-liquid separation under certain temperature, then further rectify and get, use the adsorption property of the molecular sieve, through the physical principle, regard large discharge oil-free compressor as the motive force, separate nitrogen and oxygen in the air, get the oxygen of high concentration finally, the household oxygen generator is easy to use, move lightly, suitable for the vast health care person to use, the vehicle carries home furnishing dual-purpose type, can be suitable for the family, can also utilize the car power to put on the car to use, the oxygen is the colorless tasteless gas, it is the important substance that the human body relies on to live, also it is the important substance that other animals and plants rely on the life, there will not be angry in the nature without oxygen, there is not life, its importance is like water, it has wide application, and all industries can not release oxygen, including medical care, beauty care and the like.

The existing oxygen generator is designed mainly aiming at the efficiency of oxygen generation, for example, a vehicle-mounted multifunctional oxygen generator provided in Chinese patent CN 104553686A has the advantages that oxygen can be provided for drivers and passengers, the pressure of air in a vehicle is ensured to be in a normal range, the fatigue of the drivers is relieved, the air in the vehicle is purified, the quality of the air in the vehicle is ensured, when the passengers need oxygen therapy or have oxygen supply requirements, the passengers can select to carry an oxygen supply mask, the oxygen can pass through an air transmission pipeline, the oxygen supply mask is used by the passengers, the riding experience of the passengers can be greatly improved, and the special passengers can be ensured to breathe smoothly, but the design has the defect of poor clamping effect, the phenomenon of shaking or deviation is easy to occur in the moving process of the oxygen generator, the phenomenon of falling of the oxygen generator is easy to occur, the service life of the oxygen generator is reduced, influences the convenient stability of the oxygen generator, is inconvenient to use, and reduces the use efficiency and the use effect of the oxygen generator.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a stable vehicle-mounted household oxygenerator which has the advantages of good clamping effect and the like, and solves the problems that the existing oxygenerator has the defect of poor clamping effect, the phenomenon of shaking or offsetting is easy to occur in the moving process of the oxygenerator, the phenomenon of falling of the oxygenerator is easy to occur, the service life of the oxygenerator is reduced, the convenient stability of the oxygenerator is influenced, the oxygenerator is inconvenient to use, and the use efficiency and the use effect of the oxygenerator are reduced.

In order to achieve the purpose, the invention provides the following technical scheme: a stable vehicle-mounted household oxygenerator, which comprises a damping mechanism, a clamping mechanism, an adjusting mechanism, a moving mechanism and an oxygenerator body, the clamping mechanism is positioned above the damping mechanism, the oxygen generator body is positioned above the clamping mechanism, the adjusting mechanism is positioned at the right side of the shock absorption mechanism, the moving mechanism is positioned at the outer side of the shock absorption mechanism, the clamping mechanism comprises a driving box, the inner side of the driving box is movably connected with a bidirectional threaded rod, the outer side of the two-way threaded rod is in threaded connection with two threaded blocks, the tops of the two threaded blocks are fixedly connected with limiting blocks, the tops of the two limiting blocks are fixedly connected with movable clamping blocks, one sides of the two movable clamping blocks opposite to each other are fixedly connected with silica gel pads, the left end of the bidirectional threaded rod is fixedly connected with a rolling bearing, and the right end of the bidirectional threaded rod is fixedly connected with a movable rotating handle.

Further, damper includes the surge tank, two fixed blocks of the interior diapire fixedly connected with of surge tank, two fixedly connected with connecting rod between the relative one side of fixed block, the outside swing joint of connecting rod has two solid fixed rings.

Further, two fixedly connected with annular spring between the relative one side of solid fixed ring, solid fixed ring's top swing joint has the regulation pole, the top fixedly connected with buffer spring of fixed block.

Further, the top fixedly connected with shock attenuation board of buffer spring, the interior diapire fixedly connected with shock attenuation pole of damper box, the interior diapire fixedly connected with damping spring of damper box.

Furthermore, the equal fixedly connected with supporting legs in four corners of damper box bottom, the bottom fixedly connected with wear pad of supporting legs, the equal fixedly connected with sliding block in the left and right sides of shock attenuation board.

Furthermore, the adjusting mechanism comprises a fixed outer rod, the inner side of the fixed outer rod is movably connected with a movable inner rod, and the bottom end of the movable inner rod is fixedly connected with a positioning block.

Furthermore, the outer side of the movable inner rod is fixedly connected with an expansion spring, one side of the expansion spring, which is far away from the movable inner rod, is fixedly connected with a limit button, and the top end of the movable inner rod is fixedly connected with a movable push handle.

Further, the moving mechanism comprises a fixed screw block, the inner side of the fixed screw block is in threaded connection with a movable screw rod, and the bottom end of the movable screw rod is fixedly connected with a first bearing.

Furthermore, the bottom of the first bearing is fixedly connected with a movable wheel, the top end of the movable screw is fixedly connected with a manual rotating handle, and the outer side of the movable wheel is fixedly connected with a brake.

Further, the top fixedly connected with drive box of shock attenuation board, the top swing joint of drive box has the oxygenerator body, the fixed outer pole of right side fixedly connected with of shock attenuation box, the equal fixedly connected with of the left and right sides of shock attenuation box fixes the spiral shell piece.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. the stable vehicle-mounted household oxygenerator can clamp and fix the oxygenerator body through the matching action among the driving box, the bidirectional threaded rod, the threaded block, the limiting block, the movable clamping block, the silica gel pad, the rolling bearing and the movable rotating handle in the clamping mechanism, so as to avoid the phenomenon that the oxygenerator body shakes in the moving process, can move the oxygenerator body to a specified place through the matching action among the fixed threaded block, the movable threaded rod, the first bearing, the moving wheel and the manual rotating handle in the moving mechanism, and can protect the moving wheel at the same time, has simple integral structure and convenient use, realizes the purpose of good clamping effect of the oxygenerator, avoids the phenomenon that the oxygenerator shakes or deflects in the moving process, prevents the oxygenerator from falling, prolongs the service life of the oxygenerator, and ensures the convenient stability of the oxygenerator, the use efficiency and the use effect of the oxygen generator are improved.

2. This on-vehicle domestic oxygenerator of stable form, through damper in the damper, the fixed block, the connecting rod, gu fixed ring, ring spring, adjust the pole, buffer spring, the shock attenuation board, the shock attenuation pole, damping spring, the supporting legs, cooperation between abrasion pad and the sliding block, can make the oxygenerator body have absorbing effect at the in-process that removes, avoid the oxygenerator body to receive the damage because of the vibration at the in-process that carries, through fixed outer pole in the adjustment mechanism, the pole in the activity, the locating piece, cooperation between expanding spring and the stop button, can highly adjust the activity push handle, so that the user of different heights removes the oxygenerator body.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the connection structure of the oxygen generator body in the structure of the present invention;

FIG. 3 is a front view of the damper box attachment structure of the present invention;

FIG. 4 is a top view of the drive housing connection structure of the present invention;

FIG. 5 is an enlarged view of the point A in FIG. 1;

FIG. 6 is an enlarged view of the point B in FIG. 1.

In the figure: 100 damping mechanisms, 101 damping boxes, 102 fixed blocks, 103 connecting rods, 104 fixed rings, 105 annular springs, 106 adjusting rods, 107 buffer springs, 108 damping plates, 109 damping rods, 110 damping springs, 111 supporting feet, 112 wear-resistant pads, 113 sliding blocks, 200 clamping mechanisms, 201 driving boxes, 202 bidirectional threaded rods, 203 threaded blocks, 204 limiting blocks, 205 movable clamping blocks, 206 silica gel pads, 207 rolling bearings, 208 movable rotating handles, 300 adjusting mechanisms, 301 fixed outer rods, 302 movable inner rods, 303 positioning blocks, 304 telescopic springs, 305 limiting buttons, 306 movable pushing handles, 400 moving mechanisms, 401 fixed threaded blocks, 402 movable threaded rods, 403 first bearings, 404 moving wheels, 405 manual rotating handles and 5 oxygenerator bodies.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the stable vehicle-mounted household oxygen generator in this embodiment includes a damping mechanism 100, a clamping mechanism 200, an adjusting mechanism 300, a moving mechanism 400 and an oxygen generator body 5, the clamping mechanism 200 is located above the damping mechanism 100, the oxygen generator body 5 is located above the clamping mechanism 200, the adjusting mechanism 300 is located on the right side of the damping mechanism 100, and the moving mechanism 400 is located on the outer side of the damping mechanism 100, wherein the damping mechanism 100 is fixedly connected to the clamping mechanism 200, the clamping mechanism 200 is movably connected to the oxygen generator body 5, the damping mechanism 100 is fixedly connected to the adjusting mechanism 300, the moving mechanism 400 is fixedly connected to the damping mechanism 100, the damping mechanism 100 can provide a damping effect to the oxygen generator body 5 during moving, so as to prevent the oxygen generator body 5 from being damaged due to vibration during carrying, the clamping mechanism 200 can clamp and fix the oxygen generator body 5, avoid oxygenerator body 5 to take place the phenomenon of rocking at the in-process that removes, adjustment mechanism 300 can let the user of different heights remove oxygenerator body 5, moving mechanism 400 can remove oxygenerator body 5 to appointed place, the effectual purpose of oxygenerator centre gripping has been realized, avoid the oxygenerator to take place the phenomenon of rocking or skew at the in-process that removes, prevent that the oxygenerator from taking place the phenomenon of dropping, the life of oxygenerator has been improved, the convenient stability of oxygenerator has been guaranteed, the availability factor and the result of use of oxygenerator have been improved, the following is explained in detail.

In order to realize the damping function of the damping mechanism 100, as shown in fig. 1, 3 and 4, the damping mechanism 100 in this embodiment includes a damping box 101, two fixing blocks 102 are fixedly connected to the inner bottom wall of the damping box 101, a connecting rod 103 is fixedly connected between opposite sides of the two fixing blocks 102, two fixing rings 104 are movably connected to the outer side of the connecting rod 103, a ring spring 105 is fixedly connected between opposite sides of the two fixing rings 104, an adjusting rod 106 is movably connected to the top of the fixing ring 104, a buffer spring 107 is fixedly connected to the top of the fixing block 102, a damping plate 108 is fixedly connected to the top of the buffer spring 107, a damping rod 109 is fixedly connected to the inner bottom wall of the damping box 101, a damping spring 110 is fixedly connected to the inner bottom wall of the damping box 101, supporting feet 111 are fixedly connected to four corners of the bottom of the damping box 101, and wear pads 112 are fixedly connected to the bottoms of the supporting feet 111, sliding blocks 113 are fixedly connected to the left and right sides of the damper plate 108.

The damping device comprises a fixing block 102, a fixing ring 104, adjusting rods 106, buffer springs 107, two damping rods 109 and two damping springs 110, wherein the two damping rods 109 and the two damping springs 110 are fixedly connected with a damping plate 108, the two damping springs 110 are respectively located on the outer sides of the two damping rods 109, an annular spring 105 is located on the outer side of a connecting rod 103, the two adjusting rods 106 are respectively movably connected with the fixing ring 104 through two movable pins, the two adjusting rods 106 are respectively movably connected with the damping plate 108 through connecting pins, sliding long grooves are respectively formed in the left side and the right side of a damping box 101, the two sliding blocks 113 are two, the two sliding blocks 113 are respectively slidably connected with the two sliding long grooves, the damping plate 108 is movably connected with the damping box 101, the number of supporting legs 111 and wear pads 112 is four, and the annular spring 105 is movably connected with the connecting rod 103.

In addition, the bottom of the supporting leg 111 can have a wear-resistant effect by arranging the wear-resistant pad 112, so that the phenomenon that the bottom of the supporting leg 111 is worn for a long time is avoided, the shock absorption effect of the shock absorption plate 108 can be improved by arranging the two shock absorption rods 109, the two shock absorption springs 110, the two fixing rings 104, the two adjusting rods 106 and the annular spring 105, and the up-and-down stability of the shock absorption plate 108 can be improved by arranging the two sliding blocks 113 and the two sliding long grooves.

In order to realize the clamping effect of the clamping mechanism 200, as shown in fig. 1, fig. 3 and fig. 4, the clamping mechanism 200 in this embodiment includes a driving box 201, the inside swing joint of the driving box 201 has a bidirectional threaded rod 202, the outside threaded connection of the bidirectional threaded rod 202 has two threaded blocks 203, the equal fixedly connected with stopper 204 at the top of the two threaded blocks 203, the equal fixedly connected with movable clamp block 205 at the top of the two stopper 204, the equal fixedly connected with silica gel pad 206 at the opposite side of the two movable clamp blocks 205, the left end fixedly connected with rolling bearing 207 of the bidirectional threaded rod 202, and the right end fixedly connected with movable rotating handle 208 of the bidirectional threaded rod 202.

Wherein, the top of the driving box 201 is movably connected with an oxygenerator body 5, the top of the damping plate 108 is fixedly connected with the driving box 201, the number of the thread blocks 203, the limiting blocks 204, the movable clamping blocks 205 and the silica gel pads 206 is two, the inner sides of the two thread blocks 203 are respectively provided with a threaded hole matched with the outer thread of the two-way threaded rod 202, the thread directions of the inner sides of the two threaded holes are opposite, the top of the driving box 201 is provided with two limiting long grooves, the width of the limiting long grooves is equal to the width of the limiting blocks 204, the two limiting blocks 204 are respectively connected with the two limiting long grooves in a sliding way, the two silica gel pads 206 are both movably connected with the oxygenerator body 5, the two movable clamping blocks 205 are both movably connected with the driving box 201, the left end of the two-way threaded rod 202 sequentially penetrates through the driving box 201, the thread blocks 203 and the rolling bearings 207 and extends to the inner sides of the rolling bearings 207, the rolling bearing 207 is composed of an inner ring, a ball and an outer ring, the inner ring is fixedly connected with the bidirectional threaded rod 202, the outer ring is fixedly connected with the driving box 201, the two silica gel pads 206 are movably connected with the driving box 201, and the movable rotating handle 208 is movably connected with the driving box 201.

In addition, through setting up antifriction bearing 207, can improve two-way threaded rod 202 pivoted stability, through setting up spacing elongated slot and stopper 204, can restrict the screw piece 203 and carry out the circumferential rotation, through setting up two movable clamp splice 205, can improve the stability of oxygenerator body 5 centre gripping, through setting up silica gel pad 206, can avoid movable clamp splice 205 at the in-process of centre gripping oxygenerator body 5, cause the damage to oxygenerator body 5, can improve the fastness of movable clamp splice 205 to oxygenerator body 5 centre gripping simultaneously.

In order to realize the adjusting function of the adjusting mechanism 300, as shown in fig. 1, fig. 3, fig. 4 and fig. 5, the adjusting mechanism 300 in this embodiment includes a fixed outer rod 301, a movable inner rod 302 is movably connected to the inner side of the fixed outer rod 301, a positioning block 303 is fixedly connected to the bottom end of the movable inner rod 302, a telescopic spring 304 is fixedly connected to the outer side of the movable inner rod 302, a limit button 305 is fixedly connected to one side of the telescopic spring 304, which is far away from the movable inner rod 302, and a movable push handle 306 is fixedly connected to the top end of the movable inner rod 302.

Wherein, the fixed outer pole 301 of right side fixedly connected with of damper box 101, the quantity of fixed outer pole 301, the interior pole 302 of activity, locating piece 303, expanding spring 304 and limit button 305 is two, and the top of the interior pole 302 of activity runs through fixed outer pole 301 and extends to the activity and pushes away the outside of handle 306, and six limit hole have all been seted up to the left side of two fixed outer poles 301, and limit hole and limit button 305 joint.

In addition, the movable inner rod 302 can be restrained by providing the positioning block 303, and the restraining button 305 can have a cushioning effect by providing the extension spring 304.

In order to realize the moving function of the moving mechanism 400, as shown in fig. 1, 3 and 5, the moving mechanism 400 in this embodiment includes a fixed screw block 401, a movable screw 402 is connected to the inner side of the fixed screw block 401 through a screw thread, a first bearing 403 is fixedly connected to the bottom end of the movable screw 402, a moving wheel 404 is fixedly connected to the bottom of the first bearing 403, and a manual rotating handle 405 is fixedly connected to the top end of the movable screw 402.

Wherein, the outside fixedly connected with brake of removal wheel 404, the equal fixedly connected with fixed spiral shell piece 401 in the left and right sides of surge tank 101, fixed spiral shell piece 401, movable screw 402, first bearing 403, the quantity of removal wheel 404 and manual turning handle 405 is four, the spiral hole with movable screw 402 outside screw thread looks adaptation is seted up to fixed spiral shell piece 401's inboard, fixed spiral shell piece 401 and first bearing 403 are run through in proper order and are extended to the inboard of first bearing 403 in the bottom of movable screw 402, first bearing 403 is by the inner ring, the ball is constituteed with the outer loop, and inner ring and movable screw 402 fixed connection, outer loop and removal wheel 404 fixed connection, the groove has been seted up to fixed spiral shell piece 401's bottom, remove wheel 404 and be located the inboard of accomodating the groove.

Further, the first bearing 403 is provided to restrict the circumferential rotation of the movable wheel 404, the brake is provided to fix the movable wheel 404, and the four movable wheels 404 are provided to move the damper box 101 to a predetermined place.

The working principle of the above embodiment is as follows:

(1) put oxygenerator body 5 in the top of drive case 201, can drive two-way threaded rod 202 through rotating movable turning handle 208 and rotate, because the inboard of two screw blocks 203 all seted up with the screw hole of two-way threaded rod 202 outside screw thread looks adaptation, and two screw hole inboard screw thread opposite direction, so two-way threaded rod 202 pivoted in-process, can drive two screw blocks 203 respectively, two stopper 204, two movable clamp blocks 205 and two silica gel pads 206 are relative removal, two movable clamp blocks 205 are relative movement's in-process, can carry out the centre gripping fixed to oxygenerator body 5, avoid oxygenerator body 5 to take place the phenomenon that drops at the in-process that removes.

(2) When needs move oxygenerator body 5, through rotating manual turning handle 405, can drive movable screw 402 and rotate, because fixed spiral shell piece 401 and movable screw 402 threaded connection, so movable screw 402 pivoted in-process can drive and remove wheel 404 and remove downwards, remove the in-process that wheel 404 removed downwards, can support surge tank 101 and supporting legs 111, thereby push away handle 306 through four removal wheels 404 and activity, can remove oxygenerator body 5 to appointed place.

(3) Through pressing limit button 305, can make expanding spring 304 be in compression state, can remove limit button 305 to the inboard of fixed outer pole 301, can make the interior pole 302 of activity lose spacingly, push away handle 306 through the pulling activity this moment, can drive the interior pole 302 of activity and reciprocate, push away the high back that handle 306 removed the needs when the activity, elasticity through expanding spring 304, can move limit button 305 to the spacing hole that corresponds at present, can carry out spacing again to the pole 302 of activity, thereby can push away the height of handle 306 to the activity and adjust, can let the user of different heights remove oxygenerator body 5.

(4) Through fixed block 102, connecting rod 103, fixed ring 104, ring spring 105, adjust pole 106, buffer spring 107, shock attenuation board 108, shock attenuation pole 109, the mating reaction between damping spring 110 and the sliding block 113, can make oxygenerator body 5 have absorbing effect at the in-process that removes, when needs fix oxygenerator body 5, rotation through manual turning handle 405, can remove the inboard of wheel 404 removal to fixed spiral shell piece 401, can make wear pad 112 and ground laminating, can fix surge tank 101, can be at the in-process that does not use removal wheel 404, protect removal wheel 404.

Compared with the prior art: overall structure is simple, facilitates the use, has realized the effectual purpose of oxygenerator centre gripping, avoids the oxygenerator to take place to rock or the phenomenon of skew at the in-process that removes, prevents that the oxygenerator from taking place the phenomenon of dropping, has improved the life of oxygenerator, has guaranteed the convenient stability of oxygenerator, has improved the availability factor and the result of use of oxygenerator.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.