Abstract: This invention is a new and novel embodiment of inflation valve for an inflatable boat or article, which also incorporates a separate and internal pressure release valve to allow the release of air when needed due to the rise of internal pressure inside said boat caused by temperature changes during the day, or any other over-pressure situation which could cause a rupture of the seams or outer shell.

Abstract: An Automatic pressure valve for the inflation-deflation of pneumatic arrangements comprises a main body (102) with an inlet connector (103) communicated with a pressurized air supply network an outlet connector connected to a pneumatic arrangement and a mechanical means which allows for a total or partial air passage or blockage to perform inflation-deflation operations of the pneumatic arrangement in a faster and practical way. The mechanical means comprises a main movable plunger (116) having an inner stepped through channel (117), a spring (120) arranged on a seat (121) defined in the inner stepped channel (117), an inflation plunger (122) operatively retained by said spring (120), a proximal movable end (126) within a first inner chamber (105), a reduced middle section (119), and a distal movable end (128) having a smaller diameter than the proximal end (126) and arranged within a second inner chamber (106).

Abstract: A system for an air inflation tool including an air regulator assembly, a clamp assembly, a hose assembly and a housing assembly is disclosed. The air regulator assembly includes an air regulator used to regulate air flow from an air supply. Attached to the air regulator is a clamp from the clamp assembly that permits the air supply to be attached to the air regulator. Attached to an opposite end of the air regulator is an output hose of the hose assembly. The output hose is attached to a tire at an opposite end. When the air regulator determines that the air pressure of the tire is too low, the air regulator will permit for air to continue flowing to the tire through the outlet hose. Otherwise, air flow from the air supply will cease when the air pressure of the tire is as needed.

Abstract: A valve assembly for a tire pressure management system includes a housing having a first perforation and a second perforation. The first perforation is selectively in fluid communication with the second perforation. A shuttle assembly is provided in the housing. A failsafe piston is connected to the shuttle assembly. A first biasing member applies a bias to the failsafe piston. A second biasing member applies a bias to the shuttle assembly. When a pressure differential between a pressure in the second perforation and a pressure in the first perforation is at or below a predetermined value, the bias applied by the first biasing member urges the failsafe piston toward the shuttle assembly to prevent fluid communication between the first perforation and the second perforation.

Abstract: An inflation device includes an airbag and an air valve. An air inlet is provided at an upper end of the air valve, an air outlet is provide at a lower end of the air valve, an inlet valve that is unidirectionally opened. inwards the air valve is provided at the air inlet, the inlet valve can be opened to a deflation position, an outlet valve is provided at the air outlet that is unidirectionally opened outwards the air valve, a push aim extending towards the outlet valve is configured in the air valve and is movable up and down, the push arm is actuated to move towards the outlet valve if the inlet valve is opened, and is pressed against the outlet valve if the inlet valve is at the deflation position. The deflation operation of the inflation device is simple due to the configuration of the push arm.

Abstract: A tire inflation system for a vehicle having a control unit including an internal fluid conduit. At least one extended stroke valve including a housing in fluid communication with the internal fluid conduit and a wheel assembly. The extended stroke valve includes a hollow outer shaft having a first flange. A first biasing member is disposed about the hollow outer shaft between the first flange and an annular protrusion defined by the housing. The extended stroke valve also includes an inner shaft having a second flange, wherein the inner shaft is at least partially disposed in the hollow outer shaft. A second biasing member is disposed about the inner shaft between the second flange and a surface defined by the hollow outer shaft. In addition, a sealing member is coupled with an end of the inner shaft opposite the second flange.

Abstract: An aircraft assembly (10) having an indicator (20) configured to provide an indication of when an element of the aircraft assembly has received a predetermined load or traveled to a predetermined position.

Abstract: A valve assembly for inflatable bodies such as a recreational toy, is located in a recessed cup that is flush with the surface of the inflatable body. The cup has a central boss that has both an internal and external thread. The valve assembly is secured to the boss with the internal threads and a cap is secured to the boss with the external threads. The valve assembly provides for inflation using an air hose or a manual inflation device. The valve assembly is removable from the cup to facilitate deflation of the body after use. The cap provides sealing between the cup and valve member to inhibit loss of air.

Abstract: Systems and methods for accommodating gravity based devices within wheel rims. An exemplary method includes identifying a number of the gravity based devices to be contained within the wheel, identifying a type of each of the gravity based devices to be contained within the wheel, identifying, based on the type and the number of the gravity based devices, a location where each of the gravity based devices are to be installed within the wheel (i.e., the air hole locations), and generating holes in the rim, where the number of the holes equals the number of the gravity based devices, and where for each air hole location in the air hole locations a single hole in the holes is generated.

Abstract: A reduced outflow valve in fluid communication with an inflatable apparatus comprising a tubular body defining an inner bore and a plunger slidingly engaged in the bore. Inflation of the inflatable apparatus urges the plunger to a first position configured to allow rapid ingress of air into the cushion to inflate the cushion and deflation of the inflatable apparatus urges the plunger to a second position wherein the plunger is configured as a baffle to dampen or slow air egress during release of air.

Abstract: A failure tolerant tire inflation system for supplying pressurized air from an onboard source to the vehicle tires in the event of a pressure drop in one or more of the tires below a predetermined level. The system includes a tire inflation valve communicable with the source of pressurized air, a tire selector valve assembly for selectively communicating air from the tire inflation valve with the vehicle tires, a plurality of valve assemblies each communicating with at least one tire and selectively communicating with the tire selector valve assembly. A controller selectively activates and deactivates the tire inflation valve and valve assemblies to sequentially check the pressure in the tires and direct air to any underinflated tire. A transducer is provided for detecting the tire pressure levels upon the opening of the valve assembly communicating with that tire and communicating the underinflated condition to the controller.

Abstract: An air maintenance tire and air pump assembly includes a sidewall and a tire cavity for maintaining pressure; an elongate tubular air passageway enclosed within a flexing region of the sidewall, air passageway, the air passageway operably closing segment by segment in reaction to induced forces from the tire flexing region as the flexing region of the tire wall rotates adjacent a rolling tire footprint, the elongate air passageway having at least one check valve device seated within the axial air passageway; and a relief valve assembly comprising a chamber body, a valve, a piston, and a silicone ring, the valve having a valve body and a valve head, the valve head, deforming to release over-pressurized air from the tire cavity to atmosphere.

Abstract: The present invention provides an improved pressure relief valve comprising a tubular main body with a pressure relief peroration, a pressure adjustor with an anti-leakage rubber and an anti-reverse unit; wherein the main body comprises a mount opening, an air outlet and a conduit between the air intake and outlet. The conduit comprises an abutting portion; the pressure adjustor is mounted on the air intake and the anti-reverse unit is fastened onto said outlet. As the pressure adjustor is connected to an air pump and said outlet is connected to an air-filling article, the pressure value of said article is set via the pressure adjustor. As said article reaches said pressure value, the anti-leakage rubber of the pressure adjustor is pushed such that air is released from the relief perforation and the anti-reverse unit abuts the staged portion of the conduit to maintain the article at a stabilized filling state.

Abstract: The specification discloses a tire inflation pressure regulator facilitating precise tire inflation. The regulator includes a body, a two-position valve within the body, and a rotational lock. The body includes an air inlet, an air outlet, and an air vent. In one position, the valve directs air from the air inlet to the air outlet when the tire pressure is below a preset level; and, in a second position, the valve directs air from the air inlet to the air vent when the tire pressure exceeds the preset level to prevent overfilling. The valve moves rapidly between the two positions, and is unstable between the two positions. The valve includes a regulator enabling the preset level to be adjusted. The rotational lock enables the regulator to be screwed onto a tire stem, but prevents removal of the regulator from the tire stem without a key.

Abstract: A safety relief fill valve adapted to being an interface for filling and relieving excess pressure from a closed fluid system. An insert shell retains a piston member for movement between fluid input and fluid holding configurations, the piston member being resiliently biased toward fluid holding configuration. When in fluid holding configuration, the piston member sealingly engages an inlet bore of the insert shell. When in fluid input configuration, the piston member allows fluid flow through the inlet bore. A housing receives the insert shell, thereby limiting relative axial movement and forming a cavity between a portion of the housing the insert shell. This cavity provides mechanical guidance and a flow channel for an overpressure relief system having fluid retaining and fluid relief configurations, the overpressure relief system being elastically biased toward fluid retaining configuration. The elastic bias is overcome responsive to excess pressure within the closed fluid system.

Abstract: A pressure-controlled three-way valve device for inflating, keeping inflated and deflating tires, the device having a plunger axially traversed by an inlet passage normally closed by a spring-urged inlet valve. The plunger's outer sidewall has a recess in which an O-ring extends to abut against the steps of the recess to limit the plunger stroke and keep an outlet circuit closed to a venting port formed in the sidewall of the body of the device. The plunger moving between a position to open air supply to the tire, a position to keep an outlet circuit to a tire closed and a position to open a venting port to deflate the tire. The plunger being mounted into the valve body by a diaphragm sealing an outer wall of the plunger against the valve body and permitting the moving of the plunger with minimal friction between the plunger and the valve body.

Abstract: An air pressure adjusting apparatus includes an inflator, an adjusting element, a pressure relief valve, an elastic element, and a pressing element. An adjusting hole, an inlet and an outlet are defined in the inflator. The adjusting hole, the inlet and the outlet communicate each other. The adjusting element is movable within the inflator. The pressure relief valve covers the adjusting hole to prevent airflow from escaping from the adjusting hole. The pressing element is secured to the adjusting element. The elastic element is located between the pressure relief valve and the pressing element. Wherein the pressing element is minutely adjustable in allowing the release of excess pressure through the valve.

Abstract: A plug having a pressure release valve for releasing excess pressure within a bladder of the plug. The release valve has a valve core with a pressure release passage therethrough with an inlet in fluid communication with an interior void of the bladder and an outlet in fluid communication with the external environment outside the bladder. An elastomeric seal under hoop stress about a portion of the valve core seals the outlet until overinflation of the bladder causes the seal to become elastically deflected and unseal the outlet, thereby allowing excess pressure to be released. When the overinflation no longer exists because of the pressure release, the hoop stress of the seal causes resealing of the outlet. An inflation valve may also be provided to inflate the bladder, and with the inlet opening into an inflation passageway into the bladder's interior.

Abstract: A pressure relief device (100) for an inflatable tire comprises a body (102) having a chamber (116) therein and pressure relief mechanism for releasing air when the air pressure in the chamber exceeds a first predetermined pressure level. A conduit (108; 208) inter-connects an air inlet (110; 210) with an air outlet (112; 212). The conduit (108; 208) is provided in a pin (104; 204) arranged to slide axially in a passageway (106) in the body, the pin (104; 204) extending from the air inlet (110; 210) to the air outlet (112; 212) and being slidable between a first position in which it cannot release a stem of the tire, and a second position, in which it can release the stem.

Abstract: Two independent poppets/valves that open and close independently as a quick connect coupling is mated and unmated are employed as part of a cooling system for high end data processing systems. More particularly, the present invention comprises a quick connect poppet valve having two internal, independently functioning sealing seats therein disposed within a serially connected flow path to prevent leakage and to minimize the effects of debris.

Abstract: The specification discloses a tire inflation pressure regulator facilitating precise tire inflation. The regulator includes a body, a two-position valve within the body, and a rotational lock. The body includes an air inlet, an air outlet, and an air vent. In one position, the valve directs air from the air inlet to the air outlet when the tire pressure is below a preset level; and, in a second position, the valve directs air from the air inlet to the air vent when the tire pressure exceeds the preset level to prevent overfilling. The valve moves rapidly between the two positions, and is unstable between the two positions. The valve includes a regulator enabling the preset level to be adjusted. The rotational lock enables the regulator to be screwed onto a tire stem, but prevents removal of the regulator from the tire stem without a key. The regulator preferably includes a cap removably sealed over the air inlet and the air vent to prevent the undesired loss of air.

Abstract: Methods, systems, and apparatus for a fill port for a flexible container such as a flexible self supporting dewatering or marine structure. The container includes a flexible material having at least one opening and a fill port having an inner port body and an outer port body. At least one face of the inner and/or outer port body has a plurality of cellular surfaces with cavities that do not extend through the inner and/or outer port body on which they are positioned. The cavities receive a portion of the flexible material when the inner port body, the flexible material, and the outer port body are secured together and in use, thus minimizing stresses on the flexible material surrounding the fill port by equally distributing the forces acting on this material during the filling stage and thus reducing the risk of tears or failure to the flexible container.

Abstract: An outdoor lighting device includes a housing, at least one power supply device and at least one arrayed lighting unit. The housing has a surface forming at least one reflection zone and the reflection zone includes a lens. The power supply device is arranged inside the housing and has a grounding terminal connected to the housing. The power supply device receives and converts an alternate current power into an output of direct current power. The arrayed lighting unit includes plural arrays of lighting elements and a light-transmitting protection layer. The arrayed lighting unit is arranged inside the housing at a location corresponding to the lens and is connected to the power supply device, whereby the power supply device provides the arrayed lighting unit with the direct current power to energize the arrayed lighting unit to give off light that is reflected by the reflection zone.

Abstract: A tire-pressure control apparatus includes an air pump AP capable of supplying compressed air to a tire air chamber Rb, a mechanical control valve device VA which permits and prohibits supply of compressed air from the air pump AP to the tire air chamber Rb, a valve-state detection sensor (stroke sensor S1) for detecting the state of the control valve device VA, and an electric control apparatus ECU. The electric control apparatus ECU includes time measurement for measuring a pressure increasing time which is a time period starting when the supply of compressed air from the air pump AP to the tire air chamber Rb is started and ending when the supply of compressed air is stopped, and a pressure decreasing time which is a time period starting when the supply of compressed air is stopped and ending when the supply of compressed air is started (resumed).

Abstract: An inflation valve includes a hollow sleeve having a first chamber and a second chamber; a first valve body located in the first chamber; a second valve body located in the second chamber; an air inlet connector screwed to an upper end of the second chamber; and a central pin assembly mounted in the air inlet connector. When an object being inflated by the inflation valve is excessively inflated, the inflation valve automatically releases surplus high-pressure air via at least one release pod of the second chamber by pushing the first valve body and the second valve body upward.

Abstract: The present invention provides a pneumatic test plug that seals a portion of a pipe section having a generally cylindrical internal pipe wall. In general, the pneumatic test plug includes an inflation valve mounted in the bladder wall of an inflatable bladder. The inflation valve includes a main air passageway through which air is introduced into the bladder and a separate release channel. The separate release channel includes an inlet disposed toward an interior end of the inflation valve and an outlet in fluid communication with an exterior environment outside the bladder. When in a sealed position, a sealing portion of the bladder engages the interior end of the inflation valve and sealingly closes the inlet of the release channel. When the sealing portion is elastically deflected by overinflation of the bladder, the sealing portion uncovers the inlet of the release channel to allow air to escape from the interior area of the bladder through the release channel to the exterior environment.

Abstract: A system, storage bag and method for evacuating air from a convention self-sealing storage bag. An air valve assembly includes inner and outer valve members, the inner valve member being positionable within the storage bag and having a tapered piercing spout adapted to pierce through a flexible panel. The outer valve member has a housing lockingly engagable over the piercing spout protruding outwardly through the panel. A perimeter edge of the housing is sealingly engagable against the bag panel and a mating groove formed into the inner valve member. The inner valve member is configured for temporary sealing engagement against the inner surface of the bag panel as air is removed from the interior of the storage bag out through the piercing spout and housing air outlets by a vacuum pump.

Abstract: The specification discloses a tire inflation pressure regulator facilitating precise tire inflation. The regulator includes a body, a two-position valve within the body, and a rotational lock. The body includes an air inlet, an air outlet, and an air vent. In one position, the valve directs air from the air inlet to the air outlet when the tire pressure is below a preset level; and, in a second position, the valve directs air from the air inlet to the air vent when the tire pressure exceeds the preset level to prevent overfilling. The valve moves rapidly between the two positions, and is unstable between the two positions. The valve includes a regulator enabling the preset level to be adjusted. The rotational lock enables the regulator to be screwed onto a tire stem, but prevents removal of the regulator from the tire stem without a key. The regulator preferably includes a cap removably sealed over the air inlet and the air vent to prevent the undesired loss of air.

Abstract: A two-way check valve includes a sleeve, a connection head, a valve stem eject-rod, a first valve body, a second valve body, a first pressure adjustment module, a second pressure adjustment module and an intake connector. The sleeve is threaded over the valve stem eject-rod and the intake connector at opposite ends thereof, respectively. The connection head is disposed at the valve stem eject-rod. The sleeve has a first sleeve portion and a second sleeve portion. A first receiving chamber and a second receiving chamber are respectively defined in the first sleeve portion and the second sleeve portion. The first receiving chamber receives the second valve body therein. The second valve body is defined with a receiving room therein for receiving the first valve body and the first pressure adjustment module. The second receiving chamber receives the second pressure adjustment module.

Abstract: A valve for an inflatable includes both inflation/deflation and pressure release functions. The valve has a housing which receives a core, a spring, and a nut. The nut is threadably received by the core and slidably received by the housing, and holds the core and spring in place within the housing. The inflation function includes a one way valve, and the release pressure of the pressure release function may both be adjusted and disabled.

Abstract: An inflation stem having an inflation valve combined with a blow-off valve to prevent overinflation. The valves are forced open during inflation when the actuating pin is depressed by the compressor chuck head, opening a fill chamber through which fluid flows into an inflatable object, and also opening a blow-off chamber. A blow-off intake allows lower pressure fluid from the interior of the object to enter the blow-off chamber. The fluid entering the blow-off chamber is isolated from the high pressure fluid coming in from the compressor through the fill chamber by a separation fin and shield joined to the bottom end of the actuating pin. A blow-off gasket is biased upward by a blow-off spring. But as pressure in the object and the blow-off chamber increases, the blow-off gasket is forced down, until at the predetermined pressure it is pushed past a blow-off port, through which fluid then escapes.

Abstract: A multifunctional two-way fluid check valve includes a hollow sleeve internally defining a first and a second chamber, and an inclined stop shoulder; an inflation-valve connecting head located below the hollow sleeve and having a gas mouth mounted therein; a first and a second valve body elastically movably located in the first and the second chamber, respectively; and a gas inlet connector mounted to an upper end of the second chamber. The second valve body has an external inclined section with a first airtight gasket thereon in contact with an inner inclined shoulder section on the second chamber, and a lower outer surface with a second airtight gasket thereon in contact with the inclined stop shoulder on the hollow sleeve. At least one release port is formed on a wall of the second chamber below the inner inclined shoulder section and above the beveled stop shoulder.

Abstract: A tire pressure sensor assembly is provided for use with a wheel rim including a valve hole. The sensor assembly including a metal valve stem element having a stem base, a stem body, a stem cap end, and an inner stem chamber. A lower sensor housing is rigidly over-molded onto the stem base and forms a sensor storage chamber. A tire pressure sensor element is mounted therein. An outer rubber seal is over-molded onto the stem body and includes an inner retention portion, an outer retention portion, and a retention groove configured to allow the metal valve stem element to be press-fit and retained into the valve hole. A plurality of vent holes are formed spaced around an outer perimeter of the stem base to allow universal orientation within the valve hole.

Abstract: A pressure relief device for an air inflator includes a pipe connector, a seal member, a check valve mounting ring, a check valve, an air cell connector, and a pressure relief control ring. Thus, the pressure relief control ring is tightened to perform the air inflating action and loosened to perform the pressure relief action, so that the air inflating action and the pressure relief action are performed along the same axis, and the pressure relief device has a co-axial operation function, thereby facilitating the user inflating and deflating the inflatable body. In addition, the air inlet hole is not mounted in the air cell to facilitate the user compressing the air cell.

Abstract: A combination or hybrid pressure relief and topping valve for use with inflatable devices such as life rafts and escape slides. The valve including a valve body with a fluid passage therein that includes an internal shoulder. The valve further includes a first poppet with a seal seated therein where the first poppet is biased against the shoulder by a first spring. The first poppet and seal further having an aperture therein. The valve also includes a second poppet biased into the aperture by a second spring. The combination of poppets, springs and the seal provide for a neutral mode where the valve is sealed, a topping mode where fluid is allowed to pass through the valve and into an inflatable device sealed to one end of the valve, and a pressure relief mode where fluid is released from the inflatable device to the atmosphere when overpressure within the inflatable device exists.

Abstract: In an apparatus for regulating the internal pressure of a closed system, a valve housing connected to a closed system, an intake valve connected to a valve housing for receiving a pressurized substance in one direction through the valve housing into the closed system, and a release valve connected to the valve housing for releasing excess pressure from the closed system. The release valve has a release valve aperture for releasing pressurized substance, a release valve block for selectively preventing the pressurized substance from escaping through the release valve aperture, and a release valve spring for retaining the release valve block in a closed position. When the constant internal pressure is increased, the release valve spring causes the release valve block to move from the closed position to an open position, thereby allowing excess pressurized substance to escape from the release valve aperture.

Abstract: A combination inflation and relief valve having an inflation gasket mounted on a reciprocating stem head that separates from a valve seat of a valve body against the force of an inflation spring upon inflation and having a relief gasket mounted on a reciprocating push disk that separates from the stem head against the force of a relief spring to allow excess internal pressure to vent through relief holes.

Abstract: A relief valve includes an outer stem including a larger diameter fitting section and a smaller diameter fitting section, a movable valve element fitted in both fitting sections so as to be moved between an opening position and a closing position, a communication space extending through the stem and the valve element so that a compressed fluid flows through the space, a first normally closed seal disposed between the valve element and the smaller fitting section for closing a part of a circumferential gap defined between the valve element and the stem, a second seal disposed between the valve element and the larger diameter fitting section for closing a part of the circumferential gap extending from the larger diameter fitting section side to the communication space when the movable valve element has been moved to the closing position, the second seal opening the part when the movable valve element has been moved to the opening position, a relief hole formed in the stem so that the circumferential gap normall

Abstract: A combination inflation and relief valve having an inflation gasket mounted on a reciprocating stem head that separates from a valve seat of a valve body against the force of an inflation spring upon inflation and having a relief gasket mounted on a reciprocating push disk that separates from the stem head against the force of a relief spring to allow excess internal pressure to vent through relief holes.

Abstract: A remote pressure-controlled three-way valve device has a plunger axially traversed by an inlet passage normally closed by a spring-urged inlet valve. The plunger's outer sidewall has a recess in which an O-ring extends to abut against the steps of the recess to limit the plunger stroke and keep an outlet passage closed to a venting port formed in the sidewall of the body of the device. O-ring prevents short-circuits between the inlet passage and the vent port and a spring for counteracting friction between the O-ring and the device inner wall. Filters arranged in respective ports connectable to the input air-pressure supply and the tire inner tube provide fixed seats for the springs to bear on. The plunger may dwell in a stable intermediate position that opens the outlet or deflation passage is controlled by sending an air pressure through the inlet port at 50% of the normal pressure.

Abstract: A remote pressure-controlled three-way valve device has a plunger axially traversed by an inlet passage normally closed by a spring-urged inlet valve. The plunger's outer sidewall has a recess in which an O-ring extends to abut against the steps of the recess to limit the plunger stroke and keep an outlet passage closed to a venting port formed in the sidewall of the body of the device. O-ring prevents short-circuits between the inlet passage and the vent port and a spring for counteracting friction between the O-ring and the device inner wall. Filters arranged in respective ports connectable to the input air-pressure supply and the tire inner tube provide fixed seats for the springs to bear on. The plunger may dwell in a stable intermediate position that opens the outlet or deflation passage is controlled by sending an air pressure through the inlet port at 50% of the normal pressure.

Abstract: An improved fluid flow valve (10) for a fluid flow control system. The flow valve (10) includes a flow-regulating assembly (40) having a housing (44) having a piston bore (15) within which is slideably disposed a piston-like member (42). The piston-like member (42) has a primary flow passage (52) and at least one secondary flow passage (54) formed therein. A first portion (42a) of the pistonlike member (42) is configured for mating with a seat (46) of the housing (44), and a resilient member (48) biases the piston-like member (42) away from the seat (46). When at least a predetermined fluid pressure differential exists, the first portion (42a) mates with the seat (46) and causes the at least one secondary flow passage (54) to be at least substantially closed such that fluid can substantially flow only through the primary flow passage (52).

Abstract: The present invention is related to air pressure valve stems and gauges. More particularly, this invention relates particularly to tire stem valves possessing a built-in calibrated air pressure regulator and an optional integrated air pressure indicator.

Abstract: An improved fluid flow valve (10) for a fluid flow control system. The flow valve (10) includes a flow-regulating assembly (40) having a housing (44) having a piston bore (15) within which is slideably disposed a piston-like member (42). The piston-like member (42) has a primary flow passage (52) and at least one secondary flow passage (54) formed therein. A first portion (42a) of the pistonlike member (42) is configured for mating with a seat (46) of the housing (44), and a resilient member (48) biases the piston-like member (42) away from the seat (46). When at least a predetermined fluid pressure differential exists, the first portion (42a) mates with the seat (46) and causes the at least one secondary flow passage (54) to be at least substantially closed such that fluid can substantially flow only through the primary flow passage (52).

Abstract: The present invention is related to air pressure valve stems and gauges. More particularly, this invention relates particularly to tire stem valves possessing a built-in calibrated air pressure regulator and an optional integrated air pressure indicator.

Abstract: A combined fill and relief valve is provided for a fluid chamber containing grease under pressure relative to surrounding atmosphere. The valve includes a housing having a longitudinal bore, the longitudinal bore including an inlet and an outlet. The housing also includes a transverse relief port in fluid communication with the atmosphere. A grease fitting is fixed to the housing against relative movement and is in fluid communication with the longitudinal bore. A fill valve assembly is fitted in the longitudinal bore and selectively permits flow therethrough from the inlet to the outlet. A relief valve assembly is fitted in the longitudinal bore and controls fluid passage between the outlet and the relief port.

Abstract: A vehicle wheel assembly includes a tire, a rim, an air valve and a relief valve. The relief valve can be installed in the rim, in the tire, or incorporated into the housing of the air valve to communicate directly with the interior of the tire; or as an adapter attachable to the outer end of the air valve. The relief valve includes an aperture normally covered by pre-stressed flexible belt which seals the aperture, but upon the presence of excessive pressure in the tire is deforming to vent the excessive pressure to the atmosphere. A second described variation relief valve includes a weakened portion of its housing which is automatically ruptured upon the presence of excessive pressure; this variation provides a one-time venting adapter.

Abstract: A valve releases fluid from a high pressure source to a low pressure receiver and includes a housing (301) having a first cavity (312), a second cavity (313), an annular interior sealing surface (318), an elastomeric ring (303), a poppet (302) and an actuator (304) for controlling the poppet's axial movement disposed coaxially within the housing (301). The poppet has a substantially cylindrical side wall, forming an external sealing surface (317). The poppet has fluid channels (310) for channeling fluid from the first cavity (312) radially outward through at least one orifice (311) in the side wall. When closed, the elastomeric ring (303) contacts the exterior sealing surface (317) and the interior sealing surface (318) sealing the first cavity (312) from the second cavity (313). When open, the orifice (311) is disposed relative to the elastomeric ring (303) such that fluid exiting the orifice deforms the elastomeric ring (303) outwardly forming a gap (314).

Abstract: A gas exchange device designed to displace existing air or gas inside a pressurizable or inflatable article with an inert, dry gas such as nitrogen. The gas exchange device includes an elongated injection tube which inserts into a valve or opening of a pressurizable or inflatable article. As an inert gas is injected into the article through the elongated injection tube, the interior gas is exhausted through the article valve or opening into an exhaust receiving orifice. The exhausted gas is controlled so that it may be monitored for moisture content.

Abstract: An anti-seepage, self-gauging inflation valve system includes an inlet port and an outlet port; a filler valve for introducing fluid under pressure from the inlet to the outlet port; a vent structure; an isolation chamber communicating with the vent structure; a gauging valve for sealing the chamber from the vent structure and automatically opening when the pressure in the chamber exceeds a predetermined level; an anti-seepage isolation valve for isolating the chamber from the outlet port; and an actuator device for opening the isolation valve to enable access between the gauging valve and the outlet port to vent pressure in excess of the predetermined level while the actuator device holds open the isolation valve.