Airbed valve system

Information

  • Patent Grant
  • 6550086
  • Patent Number
    6,550,086
  • Date Filed
    Friday, July 20, 2001
    23 years ago
  • Date Issued
    Tuesday, April 22, 2003
    21 years ago
Abstract
An airbed mattress includes a valve for controlling inflation of the mattress. The valve is normally biased to a closed position to prevent changes in the mattress' level of inflation. The valve may be opened by introduction of an air pump. The valve and air pump are designed to operate cooperatively by employment of an adaptor to facilitate the introduction of the air pump. The valve has an air passageway which contains an internal airflow control assembly. The control assembly operates to open the valve to passage of air upon introduction of the air pump and adaptor as well as effecting the closing of the valve when the air pump and adaptor are withdrawn. The valve also may have an extension adapted for a releasable connection with an air pump and adaptor for holding the valve open.
Description




CROSS-REFERENCE TO RELATED APPLICATIONS




Not applicable.




STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT




Not applicable.




REFERENCE TO A MICROFICHE APPENDIX




Not Applicable.




BACKGROUND OF THE INVENTION




Airbeds have increased in popularity due in part to flexibility of use, ease of set-up and reduction of storage space—all without sacrifices in comfort. An airbed's level of inflation may be adjusted by adding or removing air through a port, optionally in combination with a source of air such as a pump. A valve typically controls airflow through the port and usually operates in concert with an air pump.




An airbed valve preferably has an open mode to enable air passage into and out of the airbed, and a closed mode to maintain the airbed's level of inflation when in use. Preferably the valve can switch readily between modes with minimal actions beyond the introduction of the air pump. The airbed and valve preferably are reliable, compatible with bedding materials, strong enough for frequent long term use, and relatively inexpensive to manufacture.




SUMMARY OF THE INVENTION




An object of the present invention is to provide an apparatus which provides selective control of an airbed's level of inflation by movement of air into or out of the airbed.




Another object of the present invention is to provide an airbed inflation control apparatus which is easy to use in a variety of applications.




A further object of the present invention is to provide an airbed inflation control apparatus of rugged and simple construction which is relatively inexpensive yet operates reliably.




Other objects and features will be in part apparent and in part pointed out hereinafter.




In a first aspect of the present invention an inflatable and deflatable airbed includes an airtight membrane having an interior and an exterior, the membrane being inflatable by adding air to the interior of the membrane. A valve controls passage of air into and out of the membrane, the valve having a longitudinal axis and including a housing. The housing defines an air passageway into the interior of the membrane, the air passageway having a greater radius inside of the membrane than outside the membrane. The air passageway contains an airflow control assembly that includes a longitudinally movable plug sized to fit in and move in the air passageway. The housing has an interior end that is spanned by a housing base, the housing base having at least one aperture open to air flow between the air passageway and the interior. The airflow control assembly biases the plug toward the exterior of the membrane. When the plug is forced against the housing in response to the bias, it forms an airtight closure to prevent airflow through the air passageway. When the plug is moved in a direction opposite to the bias, it opens the valve to air flow through the air passageway.




A second aspect of the present invention includes the airflow control valve used in connection with such an airbed.




A method of connecting an air pump with the inventive airflow control valve to inflate the airbed is also disclosed.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is a cross-sectional view of a valve apparatus of the present invention along with representations of a cap and an adaptor device for interconnection with an air pump.





FIGS. 2 and 2A

are expanded cross-sectional views of alternatives of the airflow control assembly of the valve apparatus of the present invention wherein the valve apparatus is depicted in a closed configuration.





FIG. 3

is a further expanded view of

FIG. 2

depicting details of an interior shelf portion of the valve apparatus of the present invention wherein the valve apparatus is depicted in a closed configuration.





FIG. 4

is an expanded cross-sectional view of the airflow control assembly of the valve apparatus of the present invention wherein the valve apparatus is depicted in an open configuration.





FIG. 5

is a further expanded view of

FIG. 4

depicting details of an interior shelf portion of the valve apparatus of the present invention wherein the valve apparatus is depicted in an open configuration.





FIG. 6

is an expanded cross-sectional view of a valve apparatus


110


according to a second embodiment of the present invention.





FIG. 7

is a perspective view of an adaptor


211


according to a third embodiment of the present invention.





FIG. 8

is a view, in the direction


20


of

FIG. 1

, of an external section of an alternative valve housing


241


according to a third embodiment of the present invention.





FIG. 9

is a view of an alternative structure for the valve plug.











Similar reference characters indicate similar parts throughout the several views of the drawings.




DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT




Referring to

FIG. 1

, an airbed


8


(only a portion of which is shown), with a valve apparatus


10


according to a first embodiment of the present invention is depicted with an adaptor


11


. The adaptor


11


opens the valve apparatus


10


for introduction of an air pump (not depicted). The adaptor


11


has an end projection


13


. The end projection


13


is depicted in one of a variety of configurations available, subject to the operational requirements that the adaptor end projection


13


fit in flush contact about a perimeter area of the valve and is configured such that the end projection


13


is able to open the valve. End projection


13


is further configured so that when the end projection


13


opens the valve a free flow of air from the pump to the valve as well as from the valve to the pump is not impeded. An end cap


14


for closure of the valve assembly when the airbed's inflation level is not being altered is attached with a tether


16


. An arrow


20


lies along the longitudinal axis of the valve apparatus


10


and indicates the direction of airflow when the airbed


8


is being inflated. The valve apparatus


10


is generally rotationally symmetrical about the longitudinal axis which arrow


20


lies along. An internal inflatable region


30


of the airbed


8


is contained within a membrane


18


, a portion of said membrane


18


about the valve's circumference being airtight sealed to a radial extension


22


girdling the perimeter of the valve apparatus


10


. Said membrane and contiguous valve parts define a boundary surface dividing an external region


28


of the airbed


8


from an internal region


30


. Within an interior


32


of the valve apparatus


10


is contained an airflow control assembly


33


. The airflow control assembly


33


includes a solid plug


34


.




Referring now to

FIG. 2

, the valve apparatus


10


is depicted when maintaining a constant airbed 8 degree of inflation, such as when the airbed


8


is in use, wherein the plug


34


is at its maximum externally directed location. The plug


34


has an external end surface


36


, a plug side surface


38


, and an internal end


40


. End projection


13


pressing on the external end surface


36


in the direction


20


opens the valve apparatus


10


for introducing the adaptor


11


. The valve apparatus


10


has a housing


41


. The housing


41


has an external section


42


. Around the exterior of the terminal end of the housing external section


42


is a threaded portion


44


for receiving the screw-on cap


14


. The plug side surface


38


fits in flush contact with an interior surface


46


of the housing external section


42


. A plug seat


50


is affixed to the internal end


40


of the plug


34


. A post


52


extends internally from the plug seat


50


. The plug seat


50


substantially spans nearly all of the width of a valve apparatus housing internal section


54


. The post


52


is slidably received within a post guide


56


which is part of a fixed housing base


58


. A spring


60


biases the plug seat


50


in the external direction away from the fixed housing base


58


to effect a normal plug and plug seat position at the limit of their externally directed movement. A scallop member


62


(depicted schematically) disposed within the apparatus interior


32


is fixedly connected to the housing base


58


and limits the internally directed travel of the plug and plug seat. The plug


34


, plug seat


50


, post


52


, post guide


56


, housing base


58


, spring


60


and scallop member


62


are parts of the airflow control assembly


33


. Apertures


64


(depicted schematically) are passageways for airflow between the apparatus interior


32


and the internal region


30


.




As can be seen in

FIG. 2A

, the plug


34


may be of various shapes. Although the plug is smoothly tapered in

FIG. 2

, in

FIG. 2A

it has steps shown at


34


S that extend circumferentially around the plug. The housing is varied in shape in this embodiment to accommodate the stepped plug. Although a single step is shown, a number of steps may be formed in plug


34


. Moreover, although the housing is shown as shaped to accommodate the stepped plug, it should be realized that steps may be formed with radii such that the tapered housing of

FIG. 2

may still be used. In that case, the main sealing action would occur between the point of the step and the housing, rather than along the sides of the step. Of course, the precise place where such sealing occurs is of minor importance so long as sealing occurs.




Referring next to

FIG. 3

, an enlarged view in detail of the area indicated with the dashed circle in

FIG. 2

is depicted showing a juncture of the plug and plug seat with an interior shelf


65


of the housing


41


. A resilient pad


70


, which may be composed of a variety of compressible materials but is preferably foam rubber, is attached to the interior shelf


65


. When the plug


34


is at its limit of externally directed travel, an internally facing surface


72


of pad


70


is pressed upon by an externally facing surface


75


of the outermost portion of plug seat


50


and by an externally facing surface


76


of the plug


34


. Contact of the surface


72


with the surfaces


75


and


76


obstructs airflow through the valve interior


32


. The obstruction of airflow through the valve interior


32


prevents airflow into or out from the internal region


30


, thereby blocking changes in the airbed


8


level of inflation.





FIGS. 4 and 5

depict the same elements in the same views as in

FIGS. 2 & 3

, respectively, differing only by the plug


34


and plug seat


50


being at their internally directed limit of movement. The internally directed motion of valve apparatus


10


is caused by introduction of adaptor


11


and projection


13


(not depicted). At its limit of internally directed travel the plug seat


50


contacts the scallop


62


. Air passageways between the surface


38


and the surface


46


, and between the surfaces


75


and


76


and the surface


72


are opened by the internally directed movement of the plug seat


50


. These passageways enable inflation or deflation of the membrane


18


by airflow through the valve interior


32


.




While a wide variety of materials and compositions of matter can serve well to construct the present invention, the plug


34


is preferably composed of rubber and the plug seat


50


of plastic.




Referring now to

FIG. 6

, which is a cross-section view of a valve apparatus


110


that is modified in three ways from the valve apparatus


10


of the first embodiment. A first modification is the absence of the resilient pad


70


, which is attached to the interior shelf


65


in the first embodiment. The space occupied by pad


70


in the first embodiment is an unoccupied part of the valve interior


132


in the second embodiment. When a plug


134


is at the limit of its externally directed movement, plug side surface


38


fits in flush contact with interior surface


46


to obstruct airflow through the valve apparatus


110


. When the plug


134


is moved in the internal direction


20


, air passes between plug side surface


38


and housing interior surface


46


, thereby allowing airflow through the valve apparatus


110


.




A second modification is to an external end surface


136


of plug


134


. In the second embodiment, a corner ring


135


circles the outer border of external end surface


136


. Corner ring


135


is preferably a hard plastic, but may be constructed of any material with the suitable properties. These properties are sufficient durability to withstand repeated pressings by the end projection


13


without significant structural degradation; and a surface which produces relatively low friction when contacting the interior surface


46


. End projection


13


is formed from a cylindrical shell with a relatively narrow radial thickness. Corner ring


135


extends from the outer edge of the external end surface


136


towards the axial center of plug


134


sufficiently far to cover the entire contact area of end projection


13


with plug


134


. The depth of corner ring


135


along the side


38


is sufficiently far to ensure that housing interior surface


46


only contacts corner ring


135


when the plug


134


is moving. In operation, corner ring


135


provides at least two benefits. First, the durability of corner ring


135


prevents damage to the plug


34


from repeated pressings by adaptor


13


. Second, the lesser friction between interior surface


46


and the material of corner ring


135


, versus the material of plug


134


, allows plug


134


to more readily travel to its external limit of movement, for a faster and more complete closing of the valve. The desired degree of inflation of airbed


8


is thus easier to keep, once reached, since the quicker, complete closing of the valve reduces the escape of air.




A third modification is to the parts within the valve interior


132


which direct and control the motion of the plug


134


. In the second embodiment, the post


52


of the first embodiment is now a post guide


152


that extends in an internal direction from a plug seat


150


. The post guide


56


of the first embodiment is now a post


156


that extends in an external direction from a housing base


158


in the second embodiment. Post


156


and post guide


152


are also of greater width than post


52


and post guide


56


are in the first embodiment. This greater width, preferably in combination with a close fitting of post guide


152


to post


156


, reduces undesired plug


134


movement in a direction transverse to direction


20


when the valve apparatus


110


is open. A spring retaining guide


157


extending from housing base


158


encircles the perimeter of spring


60


. Spring retaining guide


157


maintains the desired positioning of the spring


60


during movement of plug


134


. The scallop


62


of the first embodiment is absent in the second embodiment. A plurality of bars


162


extend in an internal direction from plug seat


150


to a fraction of the depth of the valve interior


132


. Bars


162


contacting housing base


158


arrest the internally directed motion of plug


134


. While bars


162


are depicted as being longer than the height of spring retaining guide


157


, in an alternative embodiment spring retaining guide


157


may be equal or greater in height than the length of bars


162


, so that the internally directed movement of the plug


134


is arrested by contact of the plug seat


150


with the spring retaining guide


157


.




Referring now to

FIG. 7

, an alternative adaptor


211


to be optionally used instead of adaptor


11


when introducing an air pump


8


into valve


10


(or valve


110


). The adaptor


211


is specifically configured to work in cooperation with an alternative valve housing


241


depicted in

FIG. 8

, described subsequently. Adaptor


211


differs from adaptor


11


by an alternative end projection


213


. A collar


214


and a plurality of legs


218


comprise end projection


213


. Formed within collar


214


are a trio of vertical inset slots


215


connecting to a trio of horizontal slots


217


. Each of slots


215


originate from a site in collar


214


midway between legs


218


.




Alternative valve housing extension


241


is configured to operate cooperatively with adaptor


211


. From the perspective along the direction


20


, an alternative housing interior surface extension


246


is seen in FIG.


8


. Housing extension


241


extends externally above the external movement limit of plug


34


, providing space external of plug


34


but still inside the confines of housing extension


241


. Within this space, a trio of pegs


247


extend from the interior surface extension


246


. Pegs


247


are spaced to simultaneously align with slots


215


, and are sized to fit in slots


215


when adaptor


211


moves in the direction


20


. Adaptor


211


moving in direction


20


opens the valve apparatus


10


. Once at the limit of slots


215


, the adaptor


211


is rotated clockwise, if viewed along direction


20


. The rotation fits pegs


247


into slots


217


. Once in slots


217


, pegs


247


cannot move opposite to the direction


20


until the adaptor


211


is rotated counterclockwise to bring pegs


247


back to slots


215


. The slots


215


and pegs


247


are thus able to selectively keep the adaptor in place when holding the valve apparatus open without requiring the user to continuously exert force to overcome the bias holding the valve closed. The cooperative action of adaptor


211


and housing extension


241


provides an easily securable and releasable connection between the valve apparatus


10


(or


110


) and an air pump (not depicted). Since the pump takes at least some number of seconds to alter the airbed 8 degree of inflation, the securable connection provided by adaptor


211


and housing extension


241


allows the user to engage in other activities during this time. Alternatively, the slots


215


and


217


could be formed in the housing extension


241


, and the pegs


247


could extend from the adaptor


213


to provide the same benefit. Still another alternative would be to have either the slots or pegs formed into a part of the air pump itself, with the corresponding pegs or slots formed in the housing extension


241


, if that air pump is configured to fit directly into the valve apparatus without need of an adaptor


213


. The configuration of slots and pegs described in the third embodiment of the present invention are intended to be merely illustrative and not limiting. It is projected that a multitude of differing cooperative elements can provide functional benefits similar to the pegs and slots, as is well known to those of skill in the art, without departing from the scope of the present invention.




Turning to

FIG. 9

, an alternative valve


10


A is shown in simplified form (with the biasing spring and structure removed for clarity). Valve


10


A includes a plug


34


A that mates with the conical section of the valve body but stops short of the exterior end of the valve body. In this embodiment, the plug does not extend into the part of the passageway (labeled


250


) surrounded by the threads


44


. The interior portion of plug


34


A has a thick rubber flange (for example, about {fraction (1/16)}″ in thickness) that extends around the circumference of the plug body (for example, extending ½″ out from the plug body). This integral flange


251


mates against a suitable sealing surface


253


to provide additional sealing. Of course, other minor variations in the shape and size of the plug and the housing could be used as well.




In the disclosure of the present invention the bed is described as being inflated by air but it should be understood that “air” as used herein is a generic term for any desirable inflation gas. In view of the above, it will be seen that the various objects and features of the invention are achieved and other advantageous results obtained. The examples contained herein are merely illustrative and are not intended in a limiting sense.



Claims
  • 1. An inflatable and deflatable airbed comprising:an airtight membrane having an interior and an exterior, the membrane being inflatable by adding air to the interior of the membrane; a value integral with the membrane and controlling passage of air into and out of said membrane, said valve having a longitudinal axis and including a housing, said housing defining an air passageway into the interior of the membrane, said air passageway having a greater radius interior of the membrane than exterior of the membrane, said air passageway containing an airflow control assembly, said airflow control assembly including a longitudinally movable plug sized to fit in and move in said air passageway, said housing having an interior end that is spanned by a housing base, said housing base having at least one aperture open to air flow between the air passageway and the interior; said airflow control assembly biasing said plug toward the exterior of the membrane; said plug when the plug is forced against the housing in response to said bias, forming an airtight closure to prevent airflow through said air passageway; and said plug when moved in a direction opposite to said bias, opening said valve to air flow through said air passageway and into the interior of said membrane.
  • 2. An airbed according to claim 1 wherein said airflow control assembly further includes a movable post extending along the longitudinal axis from said plug and a post guide extending along the longitudinal axis from said housing base, said post and post guide limiting transverse movement of said plug.
  • 3. An airbed according to claim 1 further including a radial extension girdling the perimeter of said valve, wherein an inner border of said radial extension is joined by an airtight seal to said valve and an outer border of said radial extension is joined by an airtight seal to said membrane.
  • 4. An airbed according to claim 1, wherein said housing additionally has an interior shelf adjacent to the air passageway; andsaid plug having a radially extending segment of sufficient radius for engaging said interior shelf at the limit of externally directed movement of said plug to prevent airflow through the valve.
  • 5. The airbed as set forth in claim 4 wherein the radially extending segment is integrally formed on said plug.
  • 6. The airbed as set forth in claim 1 wherein the plug is substantially solid.
  • 7. The airbed as set forth in claim 1 wherein an interior surface of said housing forms a conical section which narrows in the direction from the interior to the exterior of the membrane, a side surface of said plug forming a mating conical section to cooperatively fit in flush contact with said housing conical section.
  • 8. The airbed as set forth in claim 1 further including a spring between said housing base and said plug for biasing the plug.
  • 9. The airbed as set forth in claim 8 wherein said airflow control assembly further includes a post extending along the longitudinal axis from said plug and a post guide extending along the longitudinal axis from said housing base, said post and post guide limiting transverse movement of said plug, and said spring coils around said post and post guide.
  • 10. An inflatable and deflatable airbed comprising: an airtight membrane having an interior and an exterior, the membrane being inflatable by adding air to the interior of the membrane;a valve integral with the membrane and controlling passage of air into and out of said membrane, said valve having a longitudinal axis and including a housing, said housing defining an air passageway into the interior of the membrane, said air passageway having a greater radius interior of the membrane than exterior of the membrane, said air passageway containing an airflow control assembly, said airflow control assembly including a longitudinally movable plug sized to fit in and move in said air passageway, said housing having an interior end that is spanned by a housing base, said housing base having at least one aperture open to air flow between the air passageway and the interior; said airflow control assembly biasing said plug toward the exterior of the membrane; said plug when the plug is forced against the housing in response to said bias, forming an airtight closure to prevent airflow through said air passageway; and said plug when moved in a direction opposite to said bias, opening said valve to air flow through said air passageway, and into the interior of said membrane, and wherein said housing additionally has an interior shelf adjacent to the air passageway; and said plug having a radially extending segment of sufficient radius for engaging said interior shelf at the limit of externally directed movement of said plug to prevent airflow through the valve, and further wherein said valve housing includes a rib extending interiorly about the radially extending segment.
  • 11. An inflatable and deflatable airbed comprising:an airtight membrane having an interior and an exterior, the membrane being inflatable by adding air to the interior of the membrane; a valve integral with the membrane and controlling passage of air into and out of said membrane, said valve having a longitudinal axis and including a housing, said housing defining an air passageway into the interior of the membrane, said air passageway having a greater radius interior of the membrane than exterior of the membrane, said air passageway containing an airflow control assembly, said airflow control assembly including a longitudinally movable plug sized to fit in and move in said air passageway, said housing having an interior end that is spanned by a housing base, said housing base having at least one aperture open to air flow between the air passageway and the interior; said airflow control assembly biasing said plug toward the exterior of the membrane; said plug when the plug is forced against the housing in response to said bias, forming an airtight closure to prevent airflow through said air passageway; and said plug when moved in a direction opposite to said bias, opening said valve to air flow through said air passageway, wherein the plug has a body made of a relatively flexible material and a plug seat of a relatively rigid material, said plug seat carrying the plug body.
  • 12. The airbed as set forth in claim 11 wherein the plug seat is disposed interiorly of the plug body.
  • 13. An airflow control valve adapted for use with an airbed comprising:a valve housing having first and second ports for the passage of air through said valve; said valve housing enclosing an air passageway between said ports, said air passageway containing an airflow control assembly, said airflow control assembly including a plug movable within said air passageway and fitting into said first port, and a post extending from said plug into the air passageway; said air passageway having at least first and second portions, said first portion being closer to said first port and of lesser radius than said second portion; said plug having at least one part thereof with a radius intermediate the radii of said first and second portions; said housing including a fixed housing base spanning the width of said air passageway second portion, said housing base providing at least one aperture for the open movement of air therethrough, said housing base having a post guide extending into said air passageway in a second direction towards said first port, said post guide slidably receiving said post; said housing base having a biasing device which biases said plug into contact with said first portion so that said plug closes said air passageway to airflow; and said plug being movable in response to a force greater than said biasing to open the valve to movement of air through said passageway and into the airbed.
  • 14. The airflow control valve according to claim 13 wherein said plug has an outermost flange extending circumferentially around one end of the plug.
  • 15. An airflow control valve adapted for use with an airbed comprising:An airflow control valve adapted for use with an airbed comprising: a valve housing having first and second ports for the passage of air through said valve; said valve housing enclosing an air passageway between said ports, said air passageway containing an airflow control assembly, said airflow control assembly including a plug movable within said air passageway and fitting into said first port, and a post extending from said plug into the air passageway; said air passageway having at least first and second portions, said first portion being closer to said first port and of lesser radius than said second portion; said plug having at least one part thereof with a radius intermediate the radii of said first and second portions; said housing including a fixed housing base spanning the width of said air passageway second portion, said housing base providing at least one aperture for the open movement of air therethrough, said housing base having a post guide extending into said air passageway in a second direction towards said first port, said post guide slidably receiving said post; said housing base having a biasing device which biases said plug into contact with said first portion so that said plug closes said air passageway to airflow; and said plug being movable in response to a force greater than said biasing to open the valve to movement of air through said passageway and into the airbed said housing includes a flat shell for receiving the plug flange for at least partially sealing the passageway.
  • 16. The airflow control valve as set forth in claim 15 wherein the shelf is defined by a rib extending interiorly from the housing.
  • 17. An airflow control valve adapted for use with an airbed comprising:An airflow control valve adapted for use with an airbed comprising: a valve housing having first and second ports for the passage of air through said valve; said valve housing enclosing an air passageway between said ports, said air passageway containing an airflow control assembly, said airflow control assembly including a plug movable within said air passageway and fitting into said first port, and a post extending from said plug into the air passageway; said air passageway having at least first and second portions, said first portion being closer to said first port and of lesser radius than said second portion; said plug having at least one part thereof with a radius intermediate the radii of said first and second portions; said housing including a fixed housing base spanning the width of said air passageway second portion, said housing base providing at least one aperture for the open movement of air therethrough, said housing base having a post guide extending into said air passageway in a second direction towards said first port, said post guide slidably receiving said post; said housing base having a biasing device which biases said plug into contact with said first portion so that said plug closes said air passageway to airflow; and said plug being movable in response to a force greater than said biasing to open the valve to movement of air through said passageway and into the airbed wherein the plug has a body made of a relatively flexible material and a plug seat of a relatively rigid material, said plug seat carrying the plug body.
  • 18. The airflow control valve as set forth in claim 17 wherein the plug seat is disposed interiorly of the plug body.
  • 19. An airflow control valve adapted for use with an airbed comprising:a valve housing having a closable port for the control of air passage between an interior and an exterior of an inflatable volume, said valve housing enclosing an air passageway, said air passageway containing an airflow control assembly; said airflow control assembly including a movable plug having a plug seat which normally forms an airtight seal with said port, and a post guide extending from said plug seat into the air passageway; a fixed housing base spanning a side of said housing, said housing base being open to air movement therethrough and having a post extending into said air passageway, said post sliding within said post guide; a biasing device biasing the plug with a biasing force away from said housing base towards said port so that said plug normally forms an airtight seal with said port to close the air passageway to airflow; and said plug being movable in response to a force greater than said biasing to open the valve to movement of air through said passageway.
  • 20. A method of connecting an air pump with an airflow control valve adapted for use with an airbed comprising the steps of:providing a valve having a closable port for the control of air passage between an interior and an exterior of an inflatable volume; said valve including a housing enclosing an air passageway and having an outward extension, said outward extension incorporating a connector, said air passageway containing an airflow control assembly; said airflow control assembly including a movable plug which normally forms an airtight seal with said port, and a post extending from said plug seat into the air passageway; a fixed housing base spanning an inward side of said housing, said housing base open to air movement therethrough and having a post guide extending into said air passageway, said post guide slidably receiving said post; a biasing device biasing the plug away from said housing base towards said port so that the plug forms the airtight seal with said port to close the air passageway to airflow; providing an adaptor configured to make a releasable connection with said housing extension connector, the adaptor having a connected position which opens said air passageway to airflow, said adaptor encompassing an auxiliary air passageway; introducing said adaptor inward into said port with a force greater than said biasing to open said air passageway to airflow and making said releasable connection to hold said adaptor in said connected position without continuing application of said force.
  • 21. The method according to claim 20 wherein said adaptor auxiliary air passage is configured to provide an air passageway between an air pump and said valve.
  • 22. The method according to claim 20 wherein said adaptor is integrated into an air pump.
US Referenced Citations (7)
Number Name Date Kind
2309430 Albert Jan 1943 A
4579141 Arff Apr 1986 A
4766628 Walker Aug 1988 A
5111838 Langston May 1992 A
5367726 Chaffee Nov 1994 A
5941272 Feldman Aug 1999 A
6234450 Jeory May 2001 B1