Method of controlling fluid flow transfer in shoes

Information

  • Patent Grant
  • 6282815
  • Patent Number
    6,282,815
  • Date Filed
    Tuesday, August 8, 2000
    24 years ago
  • Date Issued
    Tuesday, September 4, 2001
    23 years ago
  • Inventors
  • Examiners
    • Sewell; Paul T.
    • Stashick; Anthony
    Agents
    • Smith; Charles Edison
Abstract
A method and apparatus for sing the flow of fluid through tubes in the sole of shoes. The apparatus includes a pair of fluid filled tubes along the periphery of the sole of the shoe. One tube is connected to cross tubes that provide flow paths and cushions the for the ball and instep portions of the foot. The other tube is connected to cross tubes that provide flow paths and cushions heel portion of the foot. Adjustable pressure valves interposed between the fluid filled tubes permit a method of controlling the flow of fluid through the valves in one direction only. The pressure resistance of the valves are pre-set for a certain internal pressure level required for triggering the transfer of fluid from one tube to the other. The method include steps of controlling pressure resistance by adjusting valve pressure adjustment rings either in a clockwise direction about a rod for increasing internal pressure resistance, or in a counter-clockwise direction for decreasing internal resistance.
Description




BACKGROUND OF THE INVENTION




1. Field of the Invention




This invention relates to transfer of fluid to achieve shock absorption in footwear, and in particular, relates to fluid transfer for shock absorption and ankle support adjustable to compensate for differences in shoe size or body-weight of a user.




2. Background of the Prior Art




The basic concept of shock absorption in shoes with transfer of fluid between the heel to the ball portion of a user's foot has been known as illustrated in previously issued U.S. Patents for example, U.S. Pat. No. 4,312,140 by Reber discloses a device to facilitate pedestrians comprising a heel cavity that is connected via a feedback tube to a cavity located in the front part of the sole of a shoe. The '140 patent teaches that when the heel impacts the ground the compression results in a closing of the feedback tube which is connected to a first reservoir which includes a first one-way valve thus causing a decrease in the inner volume. As a result of this decrease of volume, pressure inside the first reservoir increases. The specification explains that when this pressure reaches a certain value, the first one-way valve opens, so that the pressurized fluid under pressure can now flow through the tube and be stored, while a second controlled one-way valve remains closed. Intensity of reaction of the device may be adapted to the body-weight of the person wearing the shoes. During what is described as a second phase, the rear and front parts of the bottom part of the shoe are both simultaneously touching the ground. In this second phase, the device remains in the state reached at the end of the first phase, which means that a certain quantity of fluid under pressure is stored in intermediate storage means.




Another example of footwear having improved shock absorption is illustrated in U.S. Pat. No. 4,446,634 by Johnson et al. The '634 patent discloses a shoe containing fluid in both a shock absorption bladder in a heel portion and ball portion of the shoe. When walking and in most running, when the heel strikes the ground or support surface, the force in the heel portion will force fluid to flow in only one direction through a regulating valve. As the weight of the user is transferred from the heel portion to the ball portion of the foot, fluid is forced from the ball bladder through another regulating valve. Fluid can flow from the ball bladder to the heel bladder and vice versa, only in one direction, because of the orientation of check valves. This permits fluid to flow from bladder to bladder and prohibits fluid flowing in the opposite direction The rate at which fluid flows from the heel bladder to the ball bladder and vice versa, can be adjusted by the operation of regulating valves.




U.S. Pat. No. 5,375,346 by Cole et al. discloses a shoe construction having heel and metatarsal bulges molded in the outer sole to define fluid-containing cavities. The bulges engage the ground as the wearer of the shoe is standing. The air in the cavities provides a cushioning effect. In walking and running, the heel bulge first comes in contact with the ground causing air in the cavity to be compressed and forced through a first passageway into the metatarsal cavity. As the heel portion lifts off the ground and the metatarsal bulge contacts the ground, the air in the metatarsal cavity is forced through a second passageway back into the heel cavity to give a lifting effect. Thus, in walking and running, the air alternates back and forth between the cavities.




The foregoing references are not exhaustive but illustrative of the state of the art and suggest that transfer of fluid can be employed to achieve shock absorption in footwear. The prior art however has not recognized or provided a solution to successfully apply the principle of fluid transfer for ankle support in shoes generally and particularly in running shoes In addition, prior art fluid transfer devices are constructed based upon predetermined conditions applicable regardless of variations in shoe size or weight of the user.




What is needed is shock absorption footwear to facilitate metered fluid transfer throughout the foot and ankle, thus providing Support for a user. It is also desirable to design a method and apparatus for pre-determining the compression pressure level to accomplish fluid transfer based upon the weight or shoe size of a person wearing the shoe.




The foregoing prior art references nowhere teach use of a combination of features in shoe structure that will provide the advantages of cushioning and shock absorption in separate regions of the foot in addition to providing support for the shoe wearer. Additionally, the prior art does not provide shoe structure capable of a quick and simple technique to vary and adjust the pressure within a fluid cavity corresponding to the weight or shoe size of the wearer.




The advantages of the present invention include the use of a forward and a rear tube cavity that extend around the perimeter of the shoe. The forward tube extends from approximate the in-step or arch region to the toe of a user and intersects with a plurality of transversely extending metatarsal inlets or projections. The forward tube is linked to the rear tube through pressure sensitive check valves. The rear tube extends around the shoe perimeter from approximate the in-step to the heel of a user, intersecting with a plurality of transversely extending arch inlets and a plurality of upwardly extending projections that surround and support the ankle of a user. The internal pressure within the forward and rear tubes is pre-determined based upon the weight or shoe size of the person wearing the shoe.











Other advantages of the invention will be apparent from the following description, the accompanying drawings and the appended claims.




BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is a cut away top view of the air transfer shoe of the present invention shown in dotted outline with transfer chambers, inlets, channels and pressure valves shown in solid line disposed within the shoe.





FIG. 2

is a left side elevation view of the air transfer shoe shown in dotted outline with the periphery tubes, ankle channels, innersole and adjustable pressure valves of the present invention shown in solid line.





FIG. 3A

is an enlarged cross section view of the adjustable pressure valve of the present invention having the pressure adjust ring, and tension spring.





FIG. 3B

is an enlarged end view of the adjustable pressure valve of the present invention shown in FIG.


3


A.





FIG. 4

is a side elevation view of the fluid transfer shoe as worn by a user showing how the heel portion of the foot first hits a support surface with the heel periphery tube being compressed.





FIG. 5

is a side elevation view of the fluid transfer shoe when the weight of the user is on the ball portion of the foot with the toe periphery tube being compressed.











SUMMARY OF THE INVENTION




The present invention relates to a method and apparatus for transferring a continuous flow of fluid from the heel portion to the toe portion of a shoe. The fluid transfer apparatus is constructed between the sole and the shoe inner sole. One important aspect of the invention is the feature that the weight of the person wearing the shoe compresses tubes that define two separate air tight chambers, causing fluid within the chambers to transfer from one chamber to the next. A first chamber located in the toe and metatarsal portions of the sole comprises a front outer tube extending around the perimeter of the shoe from the toes to the arch region. The front outer tube connects and intersects with a plurality of transversely extending inlets or projections. A second chamber located beyond the instep and in the heel portion of the sole comprises a rear outer tube extending around the perimeter of the shoe from the arch region to the heel The rear outer tube connects with and intersects a plurality of transversely extending inlets and a plurality of upwardly extending projections that surround the ankle area.




Another essential design feature involves the amount of pressure resistance the two ball type check valves connecting the chambers are designed to withstand Pressure resistance is pre-determined and set in accordance with the weight of the person wearing the shoe, which usually corresponds with the shoe size. Adjustable pressure valves are used to maintain an airtight connection between the front and rear outer tubes. The valves are arranged and oriented to permit transfer of fluid from one chamber into another only in one direction.




DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION




Referring to the drawings, and initially to

FIG. 1

, a preferred embodiment of the fluid transfer shoe


10


of the invention is illustrated generally. Fluid transfer shoe


10


has an outer sole


12


and a front chamber


20


that receives and supports the forward part of the foot of a user above outer sole


12


. Front chamber


20


has a fluid filled outside toe periphery tube


16


and a plurality of ball of foot cross tubes or front bubble inlets


22




a


,


22




b


,


22




c


,


22




d


, and


22




e


. Each of the ball of foot cross tubes or front bubble inlets


22




a


-


22




e


connects with front chamber


20


providing a plurality of fluid flow paths within fluid transfer shoe


10


, from outside toe periphery tube


16


for providing a cushion for the phalanges or toes including the ball portion of the foot of the user.




Still referring to

FIG. 1

, fluid transfer shoe


10


has a rear chamber


30


that receives and supports the rear part of the foot of the user above outer sole


12


. Rear chamber


30


has a fluid filled outside heel periphery tube


18


and a plurality of heel cross tubes or rear bubble inlets


32




a


,


32




b


,


32




c


,


32




d


, and


32




e


. Each of the heel cross tubes or rear bubble inlets


32




a


-


32




e


connects with outside heel periphery tube


18


providing a plurality of fluid flow paths within fluid transfer shoe


10


from outside heel periphery tube


18


across the heel portion of the foot of a user. While outside toe periphery tube


16


and outside heel periphery tube


18


may optimally be filled with air, for example, any suitable fluid may be used




Referring still to

FIG. 1

, the entrance to front chamber


20


and the outlet from rear chamber


30


are connected by an adjustable front chamber pressure valve


40


interposed between outside toe periphery tube


16


and outside heel periphery tube


18


. The outlet from front chamber


20


and the entrance to rear chamber


30


are connected by an adjustable rear chamber pressure valve


42


interposed between outside toe periphery tube


16


and outside heel periphery tube


18


. Fluid transfer shoe


10


also includes a plurality of arch cross tubes or arch bubble inlets in the instep or arch region


50


comprising outside arch bubble inlet


52


, center arch bubble inlet


54


and inside arch bubble inlet


56


. Arch cross tubes or arch bubble inlets


52


,


54


and


56


cushion the middle, metatarsus part of the user's foot that forms the instep.




Referring now to FIG.


1


and

FIG. 2

, fluid transfer shoe


10


has a plurality of ankle support tubes or ankle channel fingers


34




a


-


34




i


formed integral with outside heel periphery tube


18


. The ankle channel fingers


34




a


-


34




i


surround the ankle and stabilize the foot of the user. Fluid flow from outside heel periphery tube


18


is distributed to heel cross tubes or front bubble inlets


32




a


-


32




e


and ankle channel fingers


34




a


-


34




i


as the rear chamber


30


is compressed. Access to front chamber pressure valve


40


and rear chamber pressure valve


42


is provided via a removable inner sole


14


disposed within fluid transfer shoe


10


above front chamber pressure valve


40


and rear chamber pressure valve


42


and adjacent front chamber


20


, toe periphery tube


16


, ball of foot cross tubes or front bubble inlets


22




a


-


22




e


, rear chamber


30


, heel cross tubes or rear bubble inlets


32




a


-


32




e


, and arch cross tubes or arch bubble inlets


52


,


54


and


56


.




FIG.


3


A and

FIG. 3B

show details of an adjustable pressure valve system


60


according to this invention. Adjustable pressure valve system


60


includes adjustable front chamber pressure valve


40


and adjustable rear chamber pressure valve


42


, both of identical construction. Hence, although only adjustable rear chamber pressure valve


42


is shown, it is implicit that features and construction described and illustrated in

FIGS. 3A and 3B

are equally applicable for adjustable front chamber pressure valve


40


. As seen in

FIG. 3A

, adjustable pressure valve system


60


includes adjustable rear chamber pressure valve


42


that may be formed of a rigid material such as plastic. Adjustable rear chamber pressure valve


42


is designed to function as a one way valve to permit flow of fluid through adjustable front chamber pressure valve


40


in the direction indicated by the arrow into an entry channel


80


. Adjustable rear chamber pressure valve


42


is provided with a front collar


44


that is maintained in sealing engagement with the entrance to outside heel periphery tube


18


. A rear collar


46


is provided on the opposite end of adjustable front chamber pressure valve


42


and is maintained in sealing engagement with the exit from outside toe periphery tube


16


. Fluid flow from entry channel


80


into an exit chamber


86


is subject to the amount of resistance provided by a valve ball


82


and resistance spring


84


arrangement mounted on a spiral rod


70


and disposed within exit chamber


86


. Spiral rod


70


is formed with one or more spiral threads


71


that receive a pressure adjustment ring


62


. Although not specifically shown in the drawings, structure for maintaining valve ball


82


in an air tight seal between entry channel


80


and exit chamber


86


, e.g., an O ring with an associated valve seat and the like, entail ordinary mechanical skill. Hence, details of such techniques are not necessary to understand that adjustable front chamber pressure valve


42


is capable of achieving an airtight connection.




Still referring to

FIG. 3A

, valve ball


82


is shown resiliently biased to a normally closed position by resistance spring


84


to seal adjustable rear chamber pressure valve


42


when fluid or air pressure pushes against it in the direction of the arrow. Pressure adjustment ring


62


is constructed with open sectors


72


(See

FIG. 3B

) to permit airflow from exit chamber


86


. As seen in both FIG.


3


A and

FIG. 3B

, pressure adjustment ring


62


is provided with a plurality of braces


74


that connect pressure adjustment ring


62


to spiral rod


70


. Pressure adjustment ring


62


is formed with a plurality of protuberances or position ridges spaced apart on an outer surface of pressure adjustment ring


62


. Protuberance or position ridge


64


is used to designate a normal ridge position for normal pressure operation of adjustable pressure valve system


60


when position ridge


64


is aligned in a vertical orientation with respect to a horizontal plane.




Adjustable rear chamber pressure valve


42


is constructed with a specified internal resistance to fluid pressure based upon the weight of a user for normal pressure operation. When the pressure reaches a certain value, adjustable rear chamber pressure valve


42


functioning as a controlled one-way valve, opens so that fluid now flows from outside toe periphery tube


16


through Adjustable rear chamber pressure valve


42


into outside heel periphery tube


18


and the various inlets and channels, while another controlled one-way valve, adjustable front chamber pressure valve


40


remains closed.




For illustrative purposes, in a first example, assume a user between 170-195 pounds corresponds with a 9.5 to 11.0 shoe size. When the 170-195 pound user walks or runs, and when the 9.5-11.0 shoe strikes the ground surface


26


, an applied force of about 562 pounds of pressure per square foot is generated. Thus, for this example, adjustable front chamber pressure valve


40


and adjustable rear chamber pressure valve


42


are constructed to withstand internal fluid or air pressure caused by an applied force of 562 pounds of pressure per square foot. To withstand an applied force of 562 pounds of pressure per square foot, the shoe is initially constructed with resistance spring


84


set at the desired value and with position ridge


64


aligned in a vertical orientation with respect to a horizontal plane.




In another example, assume a user between 196-224 pounds corresponds with an 11.5 to 13.0 shoe size. Whenever the 196-224 pound user walks or runs and the shoe strikes the ground or support surface


26


, an applied force of about 648 pounds of pressure per square foot is created. Thus, for this second example, adjustable front chamber pressure valve


40


and adjustable rear chamber pressure valve


42


are constructed to withstand an internal fluid pressure caused by an applied force of 648 pounds of pressure per square foot. To withstand an applied force of 648 pounds of pressure per square foot, for this example, the shoe is initially constructed with resistance spring


84


set at the desired value and with position ridge


64


aligned in a vertical orientation with respect to a horizontal plane.




In yet another example, assume a user between 135-169 pounds corresponds with a 7.5 to 9.0 shoe size. Whenever the 135-169 pound user walks or runs and the 7.5-9.0 shoe strikes the ground or support surface


26


, an applied force of 468 pounds of pressure per square foot is created. Thus, for this third example, adjustable front chamber pressure valve


40


and adjustable rear pressure valve


42


are constructed to withstand an internal fluid pressure caused by an applied force of 468 pounds of pressure per square foot. For this example, to withstand an applied force of 468 pounds of pressure per square foot, the shoe is initially constructed with resistance spring


84


set at the desired value and with position ridge


64


aligned in a vertical orientation with respect to a horizontal plane.




Referring now to

FIG. 3B

, protuberance or position ridge


66


is used to designate a ridge position for an increase from normal pressure operation of adjustable pressure valve system


60


when position ridge


66


is aligned in a vertical orientation with respect to a horizontal plane. For illustrative purpose, assume that at the time of purchase a user weighs between 170-195 pounds, but since has gained weight up to about 196-224 pounds. Or, alternatively, suppose that a user weighs between 196-224 pounds, but has a foot that corresponds with a 9.5 to 11.0 shoe size. When the 196-224 pound user walks or runs, and when the 9.5-11.0 shoe strikes the ground or support surface


26


, an applied force is created greater than the pre-set 562 pounds of pressure per square foot. Thus, the internal pressure of adjustable front chamber pressure valve


40


and adjustable rear chamber pressure valve


42


may be adjusted to withstand an internal air pressure caused by an applied force of up to 648 pounds of pressure per square foot. This is accomplished by manipulation of adjustment ring


62


about spiral rod


70


so that position ridge


66


is aligned in a vertical orientation with respect to a horizontal plane. To align position ridge


66


in a vertical orientation with respect to a horizontal plane, the user may simply use an object to engage and move position ridge


64


. Hence, users simply moves ridge


64


and thereby pressure adjustment ring


62


about spiral rod


7


clockwise in the direction of arrow B until position ridge


66


is aligned in the vertical position.




In another example, assume that at the time of purchase a user weighs between 196-224 pounds, but since has gained weight up to about 225-250 pounds. Or, alternatively, suppose that a user weighs between 225-250 pounds, but has a foot that corresponds with an 11.5 to 13.0 shoe size. When the 225-250 pound user walks or runs, and when the 11.5 to 13.0 shoe strikes the ground or support surface


26


, an applied force is created greater than the pre-set 648 pounds of pressure per square foot. Thus, the internal pressure of adjustable front chamber pressure valve


40


and adjustable rear chamber pressure valve


42


may be both adjusted to withstand an internal pressure caused by an applied force of up to 732 pounds of pressure per square foot. This is accomplished by manipulation of adjustment ring


62


about spiral rod


70


so that position ridge


66


is aligned in a vertical orientation with respect to a horizontal plane. To align position ridge


66


in a vertical orientation with respect to a horizontal plane, the user may simply use an object to engage and move position ridge


64


, and thereby pressure adjustment ring


62


about spiral rod


70


, clockwise in the direction of arrow B until position ridge


66


is aligned in the vertical position.




In another example, assume that at the time of purchase a user weighs between 135-169 pounds, but since has gained weight up to about 170-195 pounds Or, alternatively suppose that a user weighs between 170-195 pounds, but has a foot that corresponds with a 9.5 to 11.0 shoe size. When the 170-194 pound user walks or runs, when the 9.5 to 11.0 shoe strikes the ground surface, an applied force is created greater than the pre-set 468 pounds of pressured per square foot. Thus, the internal pressure of a adjusted front chamber pressure value


40


and adjustable rear chamber pressure valve


42


may be adjusted to withstand an internal pressure caused by an applied force of up to 562 pounds of pressure per square foot. This is accomplished by manipulation of adjustment ring


62


about spiral rod


70


so that position ridge


66


is aligned in a vertical orientation with respect to a horizontal plane. To align position ridge


66


in a vertical orientation with respect to a horizontal plane and increase the resistance from 468 pounds per square inch to 562 pounds per square inch, position ridge


64


may be manipulated. The user may simply use an object to engage and move position ridge


64


, and thereby pressure a adjustment ring


62


about spiral rod


70


, in the direction of arrow B until position ridge


66


is aligned in the vertical position.




Still referring to

FIG. 3B

, protuberance or position ridge


68


is used to designate a ridge position for a decrease from normal pressure operation of adjustable pressure valve system


60


when position ridge


68


is aligned in a vertical orientation with respect to a horizon plane. For illustrative purpose, assume that at the time of purchase a user weighs between 170-195 pounds, but since has lost weight and is down to about 135-169 pounds. Or, alternatively, suppose that a user weigh between 135-169 pounds, but has a foot that corresponds with a 9 to 11.5 shoe size. When the 135-169 pound user walls or runs, and when the 9-11.5 shoe strikes the ground or support surface


26


, an applied force less than the pre-set 562 pounds of pressure per square foot required for fluid flow transfer is created. To facilitate fluid or air flow transfer, internal pressure resistance of adjustable front chamber pressure value


40


and adjustable rear chamber pressure valve


42


may be adjusted downward from 562 pounds to facilitate fluid flow transfer caused by an applied force of about 468 pounds of pressure per square foot. Optimally, this is a accomplished by manipulation of adjustment ring


62


about spiral rod


70


so that position ridge


68


is aligned in a vertical orientation with respect to a horizontal plane. To aligned position ridge


68


in a vertical orientation with respect to a horizontal plane, the user may simply use an object to engage and move position ridge


64


to the desired position. Thus, the user moves position ridge


64


, and thereby pressure adjustment ring


62


about spiral rod


70


, counter-clockwise in the direction of arrow A until position ridge


68


is aligned in the vertical position.




In still another example, assume that at the time of purchase a user weight between 196-224 pounds, but since has lost weight and is down to about 174-195 pounds. Or, alternatively, suppose that a user weighs between 174-195 pounds, but has a foot that corresponds with an 11.5 to 13.0 shoe size. When the 174-195 pound user walks or runs, and when the 11.5 to 13 shoe strikes the ground surface, an applied force less than the pre-set 648 pounds of pressure per square foot required for air flow transfer is created. To facilitate fluid or air flow transfer, internal pressure resistance of adjustable front chamber pressure valve


40


and adjustable rear chamber pressure valve


42


may be adjusted downward from 648 pounds to facilitate fluid flow transfer caused by an applied force of about 562 pounds of pressure per square foot. This is accomplished by manipulation of adjustment ring


62


about spiral rod


70


so that position ridge


68


is aligned in a vertical orientation with to a horizontal plane. To align position ridge


68


in a vertical orientation with respect to a horizontal plane, the user may simply use an object to engage and move position ridge


64


, and thereby pressure adjustment ring


62


about spiral rod


70


, counter-clockwise in the direction of arrow A until position ridge


68


is aligned in the vertical position.




In yet another example, assume that at the time of purchase a user weighs between 135-169 pounds, but since has lost weight and is down to 110-134 pounds. Or, alternatively suppose that a user weighs between 110-134 pounds, but has a that corresponds with a 7.5 to 9.0 shoe size. When the 110-134 pound user walks or runs and when the 7.5 to 9.0 shoe strikes the ground or support surface


26


, an applied force less than the pre-set 468 pounds of pressure per square foot required for air flow transfer is created. To facilitate air flow transfer, internal pressure resistance of adjustable front chamber pressure value


40


and adjustable rear chamber pressure value


42


may be adjusted downward from 468 pounds per square inch to facilitate fluid flow transfer caused by an applied force of about 376 pounds of pressure per square foot. This is accomplished by manipulation of adjustment ring


62


about spiral rod


70


so that position ridge


68


is aligned in a vertical orientation with respect to a horizontal plane. To align position ridge


68


in a vertical orientation with respect to a horizontal plane, the user may simply use an object to engage and move position ridge


64


, and thereby pressure adjustment ring


62


about spiral rod


70


, counter-clockwise in the direction of arrow A until position ridge


68


is aligned in the vertical position.





FIG. 4 and 5

in conjunction with

FIG. 1

,


2


and


3


A-


3


B illustrate operation of the fluid transfer shoe


10


.

FIG. 4

shows fluid transfer shoe


10


on a user's foot


24


and during the phase when the heel strikes the ground or support surface


26


, fluid in the rear chamber


30


provides a cushioning effect. The weight of the user causes fluid in rear chamber


30


including outside heel periphery tube


18


and heel cross tubes or rear bubble inlets


32




a


-


32




e


to be compressed and forced in the direction indicated by the arrow through adjustable front chamber pressure valve


40


into front chamber


20


. The pressure at which fluid flows from rear chamber


30


through adjustable front chamber pressure valve


40


into front chamber


20


is predetermined in accordance with the weigh of the user which usually corresponds with the shoe size. This pressure level can be adjusted through adjustable pressure valve system


60


by rotation of pressure adjust ring


62


.





FIG. 5

illustrates the phase when the user's foot moves from a completely flattened position to the position that the foot begins to push off with the toes flexed and the heel lifting from the ground or support surface


26


. The weight of the user causes fluid in front chamber


20


, including outside toe periphery tube


16


and ball of foot cross tubes or front bubble inlets


22




a


-


22




e


, to be compressed and forced in the direction indicated by the arrow through adjustable rear chamber pressure valve


42


into rear chamber


30


. The pressure at which fluid flows from front chamber


20


through adjustable rear chamber pressure valve


42


into rear chamber


30


is predetermined in accordance with the weight of the user which may correspond with shoe size. This internal pressure level that is required for fluid flow transfer can be adjusted either upward or downward through adjustable pressure valve system


60


by rotation of pressure adjust ring


62


.




It will be evident to those skilled in the art that a great many variants of the foregoing airflow transfer system may equally well be employed to adapt a air flow transfer system responsively to different compressive forces and weights. Additionally, it should be recognized that the changing of the ranges of airflow transfer is to be construed as being within the ambit of the appended claims.



Claims
  • 1. A method of controlling transfer of fluid flow in a shoe comprising the steps of:coupling a plurality of fluid transfer components together in a shoe fluid flow transfer system; providing a first fluid flow transfer chamber from said plurality of fluid flow transfer components within an outer sole of a shoe, said first fluid flow transfer chamber receiving and supporting a forward portion of a foot of a user above said outer sole; coupling said first fluid flow transfer chamber to a fluid filled outside toe periphery tube, said toe periphery tube extending along the outer periphery of said shoe; connecting at least one front cross tube to said first fluid flow transfer chamber, said front cross tube extending horizontally across a ball portion of said foot; providing a second fluid flow transfer chamber from said plurality of fluid flow transfer components, said first fluid flow transfer chamber and said second fluid flow transfer chamber being situated in a series arrangement, said second fluid flow transfer chamber receiving and supporting a forward portion of said foot above said outer sole; positioning said first fluid flow transfer chamber and said second fluid flow transfer chamber in immediate and direct fluid communication and alignment; coupling said second fluid flow transfer chamber to a fluid filled outside heel periphery tube, said heel periphery tube extending along the outer periphery of said shoe; connecting at least one rear cross tube to said heel periphery tube linking said rear cross tube to said second fluid flow transfer chamber thereby providing at least one transversely extending fluid flow path within said fluid flow transfer system from said outside heel periphery tube, thereby cushioning a heel portion of said foot; providing at least one upwardly extending ankle support tube formed integral with said outside heel periphery tube providing a direct fluid communication path adjacent an ankle area, thereby stabilizing said foot; providing a first pressure-sensitive component from said plurality of fluid flow transfer components within said first fluid flow transfer chamber; providing a second pressure sensitive component from said plurality of fluid flow transfer components; positioning said first fluid flow transfer chamber and pressure sensitive components in a series arrangement; compressing said first fluid flow transfer chamber; and directing fluid flow from said first fluid flow transfer chamber to said second fluid flow transfer chamber exceeds a predetermined pressure.
  • 2. The method of controlling transfer of fluid in a shoe according to claim 1 further comprising the steps of:circulating a cushion of fluid to said ball portion of said foot; connecting said first fluid flow transfer chamber to at least one tube extending horizontally across an instep portion of said foot; and circulating a cushion of fluid to said instep portion of said foot.
  • 3. The method of controlling transfer of fluid flow in a shoe according to claim 2 further comprising the steps of:manipulating an adjustable valve pressure adjustment ring clockwise about a rod; and aligning a position ridge in a vertical orientation with respect to a horizontal plane thereby increasing the internal pressure resistance of said adjustable valve.
  • 4. The method of controlling transfer of fluid flow in a shoe according to claim 3 wherein said step of aligning said position ridge includes the steps of:engaging said position ridge with an object; and moving said position ridge clockwise until said position ridge is aligned in a vertical position.
  • 5. The method of controlling transfer of fluid flow in a shoe according to claim 3 wherein said step of aligning said position ridge includes the steps of:engaging said position ridge with an object; and moving said position ridge counter-clockwise until said position ridge is aligned in a vertical position.
  • 6. The method of controlling transfer of fluid flow in a shoe according to claim 2 further comprising the step of:adjusting internal pressure within said first and second chambers and in said toe and heel periphery tubes according to weight or shoe size of said user.
Parent Case Info

This is a Division of nonprovisional application Ser. No. 09/314,429 May 18, 1999 now U.S. Pat. No. 6,170,173 Jan. 9, 2001.

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