Abstract: A local position indicating device for a subsea isolation valve that has no other visual signals of its position integrates to the hydraulic actuation system for the isolation valve. Three way valves, connected to an operating control line and a force closed balance line leading to opposed ends of an operating piston, are located by the isolation valve and redirected by a diver or ROV, to locally operate the valve. The balance line has a piston that is displaced with fluid pushed by the operating piston when the isolation valve is opened with hydraulic pressure in the operating control line local connection. The piston connected to the balance line moves an indicator out of its housing for the local indication that the isolation valve is open. Displaced fluid from movement of the piston in the position indicator moves a floating piston to keep seawater away from the indicating piston.

Abstract: A valve assembly configured for use with an inflatable product, such as a mattress, chair, pool, spa, float, or another suitable inflatable product. The valve assembly includes a first valve component that serves as an opening for inflation and/or deflation of the inflatable product, and a second valve component that serves as an opening for deflation or decompression of the inflatable product.

Abstract: An inflation device system incorporates and internal valve. The incorporation of an internal valve allows for more precise application and measurement of gas pressure with in an object to which the inflation device is inserted. The valve may be a Schrader valve.

Abstract: A self-priming nozzle device (20) comprising a nozzle sleeve (9), a nozzle body (1) comprising a nozzle body aperture (16), a sleeve portion (15) and an attachment portion (14), wherein the sleeve portion (15) attached to said attachment portion (14), and the sleeve portion (15) of the nozzle body (1) fits in the nozzle sleeve (9), a nozzle stem (3) comprising a stopper (21), an O-ring (4), and a rod portion (23), wherein said stopper (21) attached to said rod portion (23), and said O-ring (4) is positioned around said rod portion (23) near about said stopper (21), and said nozzle stem (3) is placed inside said nozzle sleeve (9) and said nozzle body aperture (16), and said stopper (21) located within said nozzle sleeve (9), a spring loaded component (25) comprising a plurality of washers (2a, 2b), a compression spring (6) and a compression element (5), and said spring loaded component (25) positioned on said rod portion (23) of nozzle stem (3), and said compression element (5) is attached to said rod portion

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: 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: 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 springless valve having a valve body, a valve stem insert, and an O-ring gasket for sealing the insert to a valve seat of the valve body. As the valve stem insert rotates about its axis, fingers on vanes of the insert move within threads of the valve body, and the insert moves between valve-opened and valve-closed positions. A coupling engages with the valve body during inflation/deflation and, as the coupling rotates with respect to the valve body, it engages the insert for mutual rotation to move the insert between the valve-opened and valve-closed positions.

Abstract: An improved air faucet allows an air mattress to be squeezed and deflated without sucking air during air discharging process. The air faucet includes an air duct coupled to a base seat. The air duct has an external screw section formed on a middle section to engage with an internal screw section of a valve cap. The air duct has an air inlet. The valve cap has air apertures formed on a top end and a jutting strut extending downwards in the center. The jutting strut has an indented recess formed at the bottom end and an opening in the center for holding a control valve. The control valve couples with a spring and has a bottom end fastened to a valve cock. The valve cap and air duct may be engaged in various manners to control the communication or sealing between the air apertures of the valve cap and air inlet of the air duct.

Abstract: An improved air faucet allows an air mattress to be squeezed and deflated without sucking air during air discharging process. The air faucet includes an air duct coupled to a base seat. The air duct has an external screw section formed on a middle section to engage with an internal screw section of a valve cap. The air duct has an air inlet. The valve cap has air apertures formed on a top end and a jutting strut extending downwards in the center. The jutting strut has an indented recess formed at the bottom end and an opening in the center for holding a control valve. The control valve couples with a spring and has a bottom end fastened to a valve cock. The valve cap and air duct may be engaged in various manners to control the communication or sealing between the air apertures of the valve cap and air inlet of the air duct.

Abstract: This invention is an automatic shut-off valve and gauge for tires during inflation. Configured as a double stem valve joined either on the outside or inside the rim of the tire. One stem serves as an air valve for inflating tires with a metal or plastic line attached to it extending into the second stem, which is a valve that regulates the air pressure in the tire. Air supplied during inflation of the tire causes a linkage to move and open a vent to the atmosphere which was otherwise closed. A spring loaded valve is designed to open when the air pressure in the tire exceeds the correct operating pressure and to allow excess air to escape to the atmosphere. A retracting and extending indicia is provided on the top of a spring loaded valve to indicate when the tire is properly inflated to a preset pressure.

Abstract: A pneumatic control apparatus and method controls gas pressure inside a tire (40) mounted on a wheel (32) which rotates about the centerline of an axle (30). A bleeder valve (28) is mounted on a body coaxially aligned with the axle centerline and is in fluid connection through passages (14, 18) in the billet and tubing (24) with a pneumatic fitting (23) on the tire. The bleeder valve allows gas inside the tire to be relieved to the atmosphere when the gas is above a set pressure. The coaxial alignment of the bleeder valve with the axle centerline permits the bleeder valve to relieve gas pressure unaffected by centrifugal forces.

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 pneumatic control apparatus and method controls gas pressure inside a tire (40) mounted on a wheel (32) which rotates about the centerline of an axle (30). A bleeder valve (28) is mounted on a body coaxially aligned with the axle centerline and is in fluid connection with a pneumatic fitting (23) on the tire. The bleeder valve allows gas inside the tire to be relieved to the atmosphere when the gas is above a set pressure. The coaxial alignment of the bleeder valve with the axle centerline permits the bleeder valve to relieve gas pressure unaffected by centrifugal forces.

Abstract: A tire deflator includes a tubular housing with indicia markings showing a desired terminal pressure to preset a tire to a desired air pressure. Click stops are provided at air pressure intervals via indentations, which interact with springy pointer. A cap with a threaded cap is moved to move the cap to the desired click stop indentation. A hose terminates in a pneumatic chuck which attaches the tire deflator to a tire valve. In operation, the user simply turns the threaded cap relative to the tubular housing to the desired terminal pressure "click stop", as indicated by numbers on the tubular housing. The user then attaches the hose chuck to the tire valve by using the handle to lock on; the chuck has an internal pin which forces open the tire valve. The deflation process commences when pressure release pin on the bottom of the deflator is pressed in so that it snaps to its inward stable position.

Abstract: A new Pressure Limiting Tire Deflator System for deflating a tire to a pre-selected pressure for increasing traction during travel within loose dirt or sand. The inventive device includes a spherical head formed for engaging a valve stem, an elongated neck, an air passage projecting through the spherical head and through the elongated neck, a plurality of air release passages, and a pressure limiter within the air passage. The pressure limiter is adjustable for preventing air pressure within the tire from falling below the pre-selected pressure.

Abstract: A pneumatic control apparatus and method controls gas pressure inside a tire mounted on a wheel which rotates about the centerline of an axle. A bleeder valve is mounted on a body coaxially aligned with the axle centerline and is in fluid connection with a pneumatic fitting on the tire. The bleeder valve allows gas inside the tire to be relieved to the atmosphere when the gas is above a set pressure. The coaxial alignment of the bleeder valve with the axle centerline permits the bleeder valve to relieve gas pressure unaffected by centrifugal forces.

Abstract: A tire device for controlled vehicle tire deflation including, a hollow rod having a top end, a bottom end, an exterior surface being knurled, and a hole therethrough having an upper portion adjacent the top end and a lower portion adjacent the bottom end capable of engaging a tire valve; a hollow set screw having a rounded head with a hex opening therethrough and an elongated body positionable in the upper portion of the hole of the rod; a valve depressor disposed inside the rod having an interior end with three support bars extending therefrom spaced away from the lower portion of the hole and an exterior end spaced within the lower portion of the hole capable of engaging a needle valve of a tire valve assembly; and a valve positioned within the rod having a spring with an upper limit being in communication with the set screw and a lower limit, a resilient supporting structure with a seat end and a base end being in communication with the support bars of the valve depressor, and a sphere therebetween being

Abstract: Apparatus for use in co-operation with a conventional tire inflation valve which enables the pressure in a tire to be reduced to a pre-determined value in a one step process. A movable pressure regulator member, comprising a pin and slot arrangement, co-operates with a valve regulating spring to close a valve member, once the pressure in the tire has reached the required valve.

Abstract: A device for controlling discharge from a pneumatic enclosure under pressure, in particular for controlling rapid deflation of a tire to a predetermined pressure value after the device has been assembled to a valve fitted to the enclosure, the device comprising a pushbutton for actuating a striker adapted to cooperate with the deflation pin of the valve and slidably mounted in a case which provides a chamber coaxially around the striker for the deflation pin, at least one vent hole being provided for exhausting the gaseous fluid contained in the enclosure to be deflated, and the striker being slidably mounted in a piston-washer received in said chamber and adapted to cooperate with the striker by a wedging action to hold the striker in a position that allows escape of the gaseous fluid contained in the enclosure.

Abstract: A quick disconnect pressure relief valve for a tire mounted on a rim includes a manually operated on/off valve mountable on the rim to provide a discrete pneumatic path between the tire interior and the outer atmosphere. The on/off valve is normally closed. A normally closed pressure operated valve insertable into the on/off valve opens the on/off valve to the passage of air through the inserted pressure operated valve to the exterior atmosphere. A plurality of such pressure operated valves calibrated to release air at different preselected tire pressure levels may be interchanged in the on/off valve. A latch is provided for securing the selected pressure operated valve in the manually operated on/off valve. Thus, to rapidly change the tire pressure level, the user need only insert a pressure operated valve calibrated to the desired tire pressure into the manually operated on/off valve.

Abstract: A topping and dumping valve is provided for inflating and deflating inflatable structures, such as life rafts and military assault boats. The valve includes a first cylindrical body mounted in the inflatable structure, and a second cylindrical body threadably mounted in the first body for movement between first and second positions. In the first position, air is directed through a passageway in the second body and through inflation ports in the first body so as to move a normally closed flapper seal out of sealing engagement with the inflation ports, thereby inflating the buoyancy chamber of the structure. When the second body is in the second position, deflation ports in the first body allow air from the buoyancy chamber to escape through the deflation ports and the passageway in the second body to the atmosphere. A protective cap is provided for closing the passageway in the second body when the valve is not being used during inflation and deflation of the inflatable structure.

Abstract: A gas pressure gage connected to a pressure tank includes a solid stem body which has a gas channel extending from the first end to the second end thereof. The solid stem body further includes a cavity which communicates the gas channel with the exterior of the gage. A spring-biased piston rod disposed in the cavity, provided with a sealing member, seals the gas channel unless the gas pressure in the gas channel exceeds the force of the spring member, or the piston rod is operated manually.

Abstract: A safety cap (10) which is screwed onto an external thread (24) of standard tire valve (22) consists of a cylindrical body (11), a cup-shaped barrel (26) which is threaded onto an external thread (17) of the cylindrical body (11), and a control valve which consists of a plunger (42), a valve seat (50), a spring (46), and a guide pin (40). This valve is located in a space (B) formed between the inner face of a barrel bottom (30) and the facing end of the cylindrical body (11). The control valve is constantly adjusted, during the assembling of the safety cap at a factory, to a maximum pressure allowable for a predetermined tire. In case the pressure in the tire exceeds the maximum allowable value, e.g., because of an increased load or high temperature air will push the plunger (42) away from the tire valve and will be released into the atmosphere through a check valve (62). Thus the pressure in the tire will be automatically adjusted to a level not exceeding the maximum allowable one.

Abstract: An improved pneumatic pressure gauge used in inflating a pneumatic tire comprises an adapter means having a gas passage extending from a gas inlet end to a gas outlet end, and a gauge casing connected integrally to the adapter member. The gauge casing includes a gauge chamber, an opening intercommunicating the gas passage and the gauge chamber, a control chamber communicated with the gauge chamber, and a gas release passage opened to atmosphere and communicated with the control chamber. A first valve means is disposed to close the communication between the gas passage and the gauge chamber, and a second pressure responsive valve means is disposed in the control chamber to close the communication between the control chamber and the gas release passage. The valve means are opened when the pressure in the tire or the gas passage exceeds the predetermined pressure.

Abstract: A semi-automatic tire deflation device attachable to a tire filler valve. A spring-urged plunger mechanism within the device is alignable with the filler valve element so that manual depression of the plunger mechanism opens the filler valve to start the tire-deflation process. The plunger has differential areas exposed to pressure forces, whereby reduction of the pressure to a predetermined value allows the spring to return the plunger mechanism to its starting position, thus automatically terminating the tire-deflation process.

Abstract: An improved inflation pressure regulator is disclosed of the type which automatically releases pressure above a predetermined maximum during inflation of a vehicular tire. The regulator, which is particularly suitable for use with low capacity tires and for use with high capacity air pumps, comprises a generally tubular housing adapted to be coupled between a vehicular tire and a source of compressed air. A substantially friction-free flexing seal arrangement within the housing couples the air source to an exhaust aperture and bypasses the tire when the pressure within the tire reaches a predetermined level. The use of a flexing seal substantially reduces seal wear and thus reduces seal leaks and minimizes variations in the regulator rating over the life of the regulator.

Abstract: A hand held mechanism that can be applied to a conventional tire inflation valve on a vehicle tire to facilitate a tire deflation operation. The mechanism includes a rod-like element that automatically engages a tire check valve to open said valve for tire venting purposes. The mechanism also includes a hollow tubular called wall structure adapted to receive the sensing head of a conventional pressure gage, whereby the progress of the tire-deflation operation can be ascertained, as necessary to properly terminate the operation at a desired tire pressure. Mechanisms of the described type can be utilized on all wheels of a multi-wheeled vehicle to permit simultaneously deflation of all vehicle tires, thereby greatly reducing the time required to achieve a total tire deflation operation.

Abstract: This invention provides a screw-on device for valve stems of automobile tires which will indicate to an automobile operator when a particular tire is under the selected standard psi. The indicator is a visible device that projects towards the outer end of the tubular member of the invention where it can be observed. The automobile operator thereupon adds air to the tire by the usual service station compressed air device and no tire guage is necessary to determine the right pressure. If insufficient pressure has been inserted in the tire the indicator will show up again, when the operator ceases adding air; if too much air has been added the device acts to relieve the excess pressure and the device will automatically close off relief flow when the standard pressure has been achieved. The pressure responsive mechanism is pre-calibrated to a particular pressure, for example 24 psi, 28 psi, 32 psi, etc.

Abstract: An apparatus including a stem is provided for introducing gas under pressure from a source of pressurized gas into a container. The stem defines a main passageway and has at least one aperture for bleeding gas from the passageway directly to the atmosphere, while gas is simultaneously introduced into the container through the passageway. The number of apertures and size of the apertures vary, depending on the predetermined container pressure desired. The apparatus can be adapted to be removably mounted on, for example, the valve stem of a pneumatic tire. Alternatively, the apparatus can be formed integrally with the valve stem of a pneumatic tire. In a further embodiment, the apparatus is adapted to inflate, for example, basketballs, footballs, and the like.

Abstract: A device is provided which can be screwed onto the adaptor of the valve assembly of a pneumatic tire and a plunger depressed to commence tire deflation. A pressure sensitive member responds to a drop in the pressure of the emerging air to allow the valve to close when a predetermined low pressure remains in the tire.

Abstract: A safety valve cap providing an elongated inner chamber with an internally screw-threaded open lower end for threaded engagement on the extended end of a conventional valve stem associated with a vehicle tire, for example. A check valve is movably positioned in the inner chamber between a compression spring and a depressor plate. When the safety valve cap is threaded onto the valve stem, the depressor plate actuates the valve stem check valve releasing compressed air into a first portion of the inner chamber until the air pressure therein is balanced with the tire pressure.