Abstract: A pressure relief tire valve for inflating a tire wheel assembly has a tire inflation valve body having a chamber therein with openings through the top and bottom ends thereof and having a relief opening formed in the tire valve body. An inflation valve having a spring loaded central core to allow to pass inward is located in the tire valve body adjacent the tire inflation valve body top end for inflating the tire therethrough. An overpressure valve is located in the tire valve body for releasing air from the tire when the air pressure in the tire exceeds a predetermined level.

Abstract: A closure for sacks, bags and like containers which have non-rigid walls and which are to be pressurized. The closure includes a filling nozzle having a tubular stub and a flange. The flange has a tubular cylindrical portion and a plate-shaped portion. The plate-shaped portion of the flange is attached to the container. The filling nozzle may be caused to sealingly engage the flange by use of a snap connection, whereby the closure is either completely open or closed. The snap connection either retains the filling nozzle in firm and tight engagement with the flange, or releases the filling nozzle in relation to the flange.

Abstract: A portable, inflatable support system, and a portable inflator for use with such a system are provided in one embodiment. The inflatable support system may include an inflatable mattress having a pressure valve and a battery powered inflator for removable engagement therewith, which on engagement is automatically powered for a predetermined time or until a predetermined pressure is achieved. The mattress may be readily expanded for use and collapsed for storage. Another embodiment provides a multipurpose pressure control, for manual adjustment to provide an inflatable support system of desired firmness, and to modify the posture of the reclining user. A dual valve assembly includes a cover assembly that removably covers a throat, and the cover assembly is itself provided with a one-way valve.

Abstract: A tire pressure indicator which includes a valve stem over-pressure indicator and a valve stem cap under-pressure indicator. The valve stem includes an air porting scheme that releases over-inflation air for escape through a whistling reed configuration. The valve stem cap includes a top translucent panel for coaction with a diaphragm spring contained therebelow. Normal tire pressure distends the diaphragm spring to an upward convex attitude in contact with the underside of the translucent panel to project a visual indicator.

Abstract: An oral inflation and relief tube for connection to an inflatable article. The oral inflation and relief tube includes an elongated tube having an oppositely positioned first opened end and second opened end, with a flanged opening positioned therebetween at ninety degrees for connection to the inflatable article. The flanged opening comprises a mounting flange and boss integrally formed through a wall of the elongated tube. The oral inflation and relief tube also includes an inflation valve sealingly positioned within the first opened end as well as a relief valve sealingly positioned within the second opened end. The elongated tube comprises an in-line configuration.

Abstract: A tire fill valve having pressure relief and tire fill fluid gas flow limiting characteristics for use in filling tires to a predetermined pressure form a large flow capacity gas source delivering fill gas at a substantially greater pressure. Gases utilized typically are air or nitrogen. The valve of the invention is wheel mounted intermediate the gas pressurizing source and the tire gas valve inlet. Tire fill gas from a high pressure high capacity source passes through a flow limiting orifice having a positive closure or shutoff member and passes through a pressure sensitive chamber as it enters the tire. Chamber pressure is sensed by a spring loaded valve disk controlling relief or venting orifices. When fill pressure in the pressure sensing chamber exceeds a pre-determined value established by the valve disk area and valve disk springs, the disk lifts allowing the venting of the fill gas.

Abstract: A device for the surveillance of the pressure of a vehicle tire includes a pressure-sensitive device which senses the tire pressure and generates, in case of a pressure loss in the tire, a pressure change signal. A set member is actuated with this pressure change signal such that the signal member performs a stroke. A sensor tests the position of the set member and recognizes when the tire pressure is too low. A pressure-sensitive device (1) includes a check valve (9, 12), opening toward the pressure discharge port (3). The pressure at the pressure discharge port (3) can be blocked versus the tire pressure based on the check valve (9, 12). The invention device is suitable for furnishing a continuous signal up to the complete emptying of a tire.

Abstract: A safety core (10) for a tire valve comprises a head portion (12) screwed into the valve's housing (28) so that it is sealed against the inner wall of the housing by compressing a seal ring (36) located in an annular groove (34) formed in a tapered portion (32) of the head part. Inserted into the head part is a cylindrical body (14) which contains a ball-type check valve (20). A ball (84) of the valve is constantly pressed to a seat (80) installed on the rear end of an adjustment pipe (16), the latter being screwed into the rear end of the body (14). The rear end protrudes through the head portion (12) and has a stop (58) on its end. A spring (62), located between the stop (58) and the outer end face of the head portion (12), constantly urges the front end of the head portion (12) to a valve seat formed on a shoulder (68) of a large-diameter portion (66) of the cylindrical body.

Abstract: A combined check valve and relief valve assembly for permitting the free of a fluid in a first direction and for selectively preventing backflow. Backflow occurs only upon depression of a compression spring-loaded cylindrical valve actuator housed within the valve body. The valve assembly comprises a valve body having an inlet and outlet port which are adjacent to an upper and lower cylindrical bore respectively, thus providing a flow path. A resilient duckbill valve is mounted within the cylindrical bores. A compression spring-loaded valve actuator is also received, lossely, within the valve body and is provided with a stem at the end of the valve actuator, proximate to the opening of the duckbill valve. Fluid passing through the upper cylindrical core around the valve actuator opens the lips of the duckbill valve permitting free passage therethrough. Back pressure seals the lips of the duckbill valve so that the valve becomes a check valve.

Abstract: A piloted pneumatic valve for controlling pressure at a distance. The valve includes a cavity divided into two chambers by a membrane. One chamber is the pilot chamber, and the other the escape chamber, connected to a pressurization and depressurization circuit, connected to the controlled pressurized volume through an orifice, and to the outside air through at least one escape hole. The system also includes a piloted valve pressing the membrane against the orifice to close it, and an opening, communicating with the circuit leading to the pressurized volume, and fitted with a check valve poppet prohibiting flow back from the capacity to the circuit. For application to automotive vehicles.

Abstract: A central tire inflation and deflation system which quickly inflates or deflates tires to any one of a plurality of pressures selected by the vehicle operator. Inflation pressure is greater than the pressure to which the tires are to be inflated. The system uses a tire valve which deflates the tires when a pressure less than the instantaneous tire pressure but greater than a minimum value is applied to the valve. Pressure on rotary seals which connect the tires to the system is relieved when the system is not operating.

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: An apparatus utilizing a conventional pneumatic tire valve mounted concentrically within a resilient seal for cooperative action with a seat structure to accomplish three-way valve operation effective in pressurizing and relieving a chamber of a dispensing gun as for mastic material. A valve seat member: defines a flow passage, affords a flat surface about the passage for seating engagement with the resilient seal member, and receives a set screw for engaging the core of the conventional tire valve. The tire valve and the resilient seal member are fixed on a handle that is pivotably mounted with respect to the seat member to afford relative motion with respect to the seat member for variously actuating the valve.

Abstract: A container for holding a plurality of supplies of fluids of different colors for being provided to a color changer connected with spray painting equipment, is characterized by a canister in which is contained a plurality of bottles containing the fluids. Caps on the bottles have outlets connected through associated fluid supply tubes with inlets to the color changer, and vent holes are formed through the caps. The interior of the canister is maintained at a selected pressure, so that by virtue of the vent holes in the bottle caps the interiors of the bottles are pressurized and the fluids are supplied under pressure through their associated tubes to the color changer.

Abstract: A tire valve extension (10) which includes a relief valve element (24) to limit the inflation pressure of the tire. The extension has a tubular body with an annular recess (36) formed therein to define an outer tube section (14) and an inner tube section (16). A spring loaded valve actuating pin (18) is received within the inner tube section, and the relief valve element is received within the recess. Ports (32) formed in the body intersect a channel (38) formed in the recess to define a relief flow path.

Abstract: A propellant charging head for filling a storing chamber of a propellant storage construction with a charge of propellant and method of making the charging head are provided, the head being adapted to be disposed against the construction and have a projection of the head engage a valve plunger of a valve unit disposed in the passage of the propellant storage construction so that propellant can flow from the head through the open valve unit to the chamber, the head having a generally conical nose-like member that is adapted to seat against a generally conical seat of the construction to fluidly interconnect the head to the passage.

Abstract: A relief valve, particularly adapted for use on racing car tires, which pops open to relieve at a set pressure and then reseats at a pressure slightly lower than the opening pressure. The valve includes a diaphragm (28) a diaphragm retaining plate (36) which has a resilient sealing element (39) molded or otherwise attached to it, a valve seat attached to the center of the diaphragm, and a compression spring (26) acting on the diaphragm to bias the valve seat against the resilient sealing element. When the valve pops open against the spring force, the area above the diaphragm is exposed to a venting pressure, via a port formed through the valve seat and through the diaphragm, which is higher than atmospheric and thus adds to the spring force, resulting in a resealing pressure which is slightly less than the opening pressure.

Abstract: A hand bicycle pump of generally cylindrical configuration essentially comprising a pump body adapted to be reciprocated on a pump rod. An air circulation chamber communicates at one end through the compression piston with the compression chamber in the pump body and at the other end via a check valve with a connector adapted to couple temporarily the pump to an inflation valve of an inflatable body, e.g. a tire. The desired inflation pressure is preselected by rotating a sleeve, accessible from outside the pump, having an index, relative graduations along a slot in the pump body. The sleeve varies the spring force exerted against one end of a piston control member, the other end of which is subjected to the pressure inside the inflatable body so that once the desired pressure is reach the control member is displaced axially to bring the compression chamber into communication with the atmosphere.

Abstract: A catheter comprising, an elongated shaft, an inflatable balloon secured to the shaft, and an inflation lumen extending along the shaft and communicating with the balloon. The catheter has valve means communicating with the inflation lumen, with the valve means being normally closed and being openable to pump fluid into the inflation lumen for inflating the balloon. The catheter also has vent means communicating with the inflation lumen, with the vent means being normally closed and opening responsive to closure of the valve means and a pressure in the balloon above a predetermined amount, such that the vent means relieves pressure in the balloon above the predetermined amount after inflation of the balloon.

Abstract: An inflation pressure regulator which automatically releases pressure above a predetermined maximum. The regulator has a tubular base extending into the hollow interior of a housing. A collar slideably mounted on the tubular base is biased against the interior of the housing with a coil spring to regulate the pressure. An inflation gas is supplied through the neck of the housing which has a plunger extending through the tubular base. A threaded cavity in the base permits permanent installation on an inflation valve.