Abstract: A device for maintaining and changing the pressure in a is provided whereby the inner pressure space of the tire is connected through a pump to a pressure accumulator which, at its input and/or output into the inner pressure space of the tire, is fitted with at least one pressure control element. The pump can be a peristaltic pump in the shape of a deformable hose placed on the perimeter of the tire, fitted with an air inlet and an air outlet, while the air inlet and the air outlet are positioned on the perimeter of the tire distant from each other by a preset length, dependent on the deformation of the tire.

Abstract: A pressure adjustment device for adjusting air pressure within a tire of a vehicle is disclosed. The device includes a housing formed of a cap and a base and including a piston, a spring and an air valve, wherein the cap includes an air inlet and the base includes an air outlet that is in fluid communication with the neck, wherein the piston moves proximally to compress the spring in response to a presence of a centrifugal force due to the vehicle traveling at least at a predetermined speed, where the proximal movement of the piston activates the air valve thereby enabling fluid to flow into the housing, and where the spring is configured to decompress when the centrifugal force decreases thereby deactivating the air valve and compressing the fluid within the housing distally out the air outlet toward the tire.

Abstract: A fuel system includes: a constant-volume pump and a centrifugal pump increasing the pressure of fuel to be supplied to an engine for aviation and discharging the fuel; an operation controller configured to select in accordance with the operation state of the engine, one of a constant-volume pump-using mode of increasing the pressure of fuel using the constant-volume pump and a centrifugal pump-using mode of increasing it using the centrifugal pump; and a speed changer connecting the engine and the centrifugal pump, changing the rotational speed of rotational power output from the engine and transmitting the rotational power to the centrifugal pump, and being capable of adjusting the speed-changing ratio of the rotational speed.

Abstract: The invention relates to a rotary lobe pump for conveying solids-laden fluids engendered in agriculture, in which the conveyed fluid volume flow adapts itself to different operating modes. For improved self-priming, the rotary lobe pump is designed for vertical mounting of the rotary lobes, wherein an angular gear is provided. The rotary lobes are mounted in a topside or underside cover, wherein the axes of the rotary lobes are vertically oriented. Using one of the covers, the rotary lobes can be vertically removed and maintained without having to dismantle other pump components from the pump housing. The rotary lobes can also be removed together with the angular gear as an integral pump component using one of the covers.

Abstract: The air pump is installed on the frame of a bicycle which utilizes the sprocket of the bicycle as the power source. The air pump contains a cylinder member, a transmission member, and a positioning member. The positioning and transmission members are connected to the cylinder member. The positioning member allows the adjustment and positioning of the cylinder member along the bicycle frame so that the cylinder member can be engaged by a front sprocket of the bicycle. The transmission member contains a shaft and a gear. The shaft has one end connected to the cylinder member and another end connected to the gear. When a rider rotates the front sprocket, the rotational power is delivered to the gear and then to the shaft of the transmission member, which in turn drives the cylinder member to pump air for inflation.

Abstract: A tire inflation system is provided for maintaining a predetermined inflation pressure of a tire mounted on a wheel of a vehicle. The system includes a base having a mounting structure for engaging a complementary mounting structure of the wheel, such as lug nuts. A compressor assembly is mounted to the base and rotates about the axis of rotation of the wheel when the vehicle is moving. The compressor assembly includes a reciprocating member such as for instance a piston or a diaphragm that is connected to a crankshaft aligned with the axis of rotation of the wheel. A counterweight is fixedly mounted on one end of the crankshaft, which under the influence of gravity acting on the counterweight results in torque being transferred to the crankshaft to prevent rotation thereof. Resulting relative motion between the compressor and the crankshaft pumps air into the tire via an air conduit.

Abstract: The present invention provides an automatic tire pressurizing and regulating system. The system maintains a predetermined pressure in a pneumatic tire during rotation of the tire. The system comprises a fill valve, one or more pumping devices, and a belt that provides fluid pathways that allow fluid (e.g., air) to flow between the outside atmosphere, the pumping device(s), and the tire as needed to maintain the predetermined pressure.

Abstract: A damping compressor generates compressed air by damping a relative motion between an axle and a chassis of a vehicle.

Abstract: A motion-powered liquid sprayer that can increase the number of rotations of the pump relative to each rotation of the wheel or axle is provided. The sprayer can include a gearing assembly that employs gears to increase the number of pump revolutions as a function of the wheel or axle rotation. The sprayer can also include a gear pump that employs an over-capacity or enhanced gullet together with blow-by spacing to control consistent liquid flow relative to variable motional velocities. Further, the sprayer can include a vertically adjustable nozzle as well as a free reverse rotation wheel hub.

Abstract: A floor finish applicator including a cart having wheels and a body member constructed and arranged to receive a source of floor finish. The floor finish applicator also includes a pump coupled to the cart and operable to deliver floor finish to a floor, a floor finish feed conduit in fluid communication between the pump and a container supporting floor finish, and a transmission assembly coupled to the cart. The floor finish feed conduit supplies floor finish to the pump. The transmission assembly includes an axle coupled to and driven by a wheel of the cart, a drive gear connected to the axle, a drive shaft having a driven gear for engaging the drive gear and driving the pump, and a hand-actuated spring-loaded clutch for selective engagement of the pump and the drive shaft with the axle.

Abstract: The disclosure is generally directed to a wheel-mounted, centrifugally activated, air compressor that will automatically inflate an inflatable vehicle tire back to the proper pressure level when small under-inflation situations occur (e.g., the occurrence of small-to-medium air leaks in a tire). Moreover, the device can be easily attach or fitted into the design of a steel or aluminum wheel, or fitted into a hubcap without modifying the standard design of the wheel-hub assembly. The wheel-mounted device includes a mounting base, cylinder assemblies, and spring-biased centrifugal arms, and is designed to convert changes in the centrifugal force felt by the centrifugal arms as wheel rotation accelerates or decelerates/stops into varying force exerted on positive-displacement pistons.

Abstract: A floor finish applicator including a cart having wheels and a body member constructed and arranged to receive a source of floor finish. The floor finish applicator also includes a pump coupled to the cart and operable to deliver floor finish to a floor, a floor finish feed conduit in fluid communication between the pump and a container supporting floor finish, and a transmission assembly coupled to the cart. The floor finish feed conduit supplies floor finish to the pump. The transmission assembly includes an axle coupled to and driven by a wheel of the cart, a drive gear connected to the axle, a drive shaft having a driven gear for engaging the drive gear and driving the pump, and a hand-actuated spring-loaded clutch for selective engagement of the pump and the drive shaft with the axle.

Abstract: A wheel-supporting roller-bearing unit with air compressor that is compact and capable of keeping resistance against the rotation of the hub 4c low while at the same time maintaining good balance, and when necessary, is capable of obtaining compressed air having sufficient pressure regardless of the traveling speed of the vehicle. A plurality of cylinder holes 53 are located at a plurality of locations that are evenly spaced around the circumferential direction on the inside of a cylinder block 50 that is connected and fastened to the inside end section in the axial direction of the hub 4c. Pistons 54 fit inside these cylinder holes 53 and are moved back and forth by a piston-drive mechanism 62 as the cylinder block 50 rotates. The air compressor 2c is a reciprocating-piston compressor, so it is possible to obtain the required air pressure regardless of rpm.

Abstract: An air supply apparatus (A) includes an air pump capable of supplying compressed air to an air chamber (a tire air chamber (Ra) of a wheel (B)) on the basis of rotation of the wheel (B); a change valve provided outside a pump chamber (Ro) of the air pump and adapted to restrict the supply of compressed air from the pump chamber (Ro) to the air chamber when the pressure of compressed air supplied from the pump chamber (Ro) to the air chamber reaches a first set value; and an adjustor capable of adjusting the first set value.

Abstract: A pressure-generating device includes an axle hub having a rotary shaft portion supported rotatably in a nonrotatable cylindrical support portion via bearings; a piston attached to the rotary shaft portion in a unitarily rotatable manner and so as to perform a pumping action, and, in cooperation with the rotary shaft portion, forming a pump chamber therebetween; a cam member and cam followers for converting a rotary motion of the axle hub in relation to the cylindrical support member to the pumping action of the piston; a suction path formed in the axle hub and enabling introduction of air into the pump chamber; and a discharge path formed in the axle hub and enabling discharge of air from the pump chamber.

Abstract: An air supply apparatus A includes an air pump 20 capable of supplying compressed air to an air chamber (a tire air chamber Ra of a wheel B) on the basis of rotation of the wheel B; a change valve 30 provided outside a pump chamber Ro of the air pump 20 and adapted to restrict the supply of compressed air from the pump chamber Ro to the air chamber when the pressure of compressed air supplied from the pump chamber Ro to the air chamber reaches a first set value; and an adjustor 40 capable of adjusting the first set value.

Abstract: To provide an automatic air-feeding mechanisms which can produce a large amount of compressed air with a small number of rotations of a wheel body and with a small force. The automatic air-feeding mechanisms has first and second compressed air producing sections 1a and 1b, and pneumatic tire compressed air supply passages 2a and 2b for introducing the compressed air produced in the compression air producing sections to a pneumatic tire. The first and second compressed air producing sections 1a and 1b are attached to a hub drum 102a of the hub 102 at positions 180° apart from each other. When the wheel body is rotated, the first and second compressed air producing sections 1a and 1b alternately produce compressed air.

Abstract: A tire pump includes a passive air pump which is attachable to a component of a vehicle wheel assembly. The vehicle wheel assembly has a vehicle wheel, a tire valve stem attached to the vehicle wheel, and a tire mounted on the vehicle wheel and containing a gas. The passive air pump has an air inlet in direct fluid communication with the atmosphere and has an air outlet in direct fluid communication with the gas in the tire. The passive air pump is operable by transient pressure pulses of the gas in the tire to suck in an air volume from the atmosphere through the air inlet after a present one of the transient pressure pulses and to pump at least some of the sucked-in air volume through the air outlet into the tire during a future one of the transient pressure pulses.

Abstract: To provide an automatic air supply mechanism for a pneumatic tire which can automatically supply air to a pneumatic tire by rotation of the pneumatic tire with respect to an axle when the air pressure in the pneumatic tire becomes a prescribed value or lower. There is provided an axle 101 and a wheel body rotatable with respect to the axle 101. An automatic air supply mechanism 1 is provided on the wheel body. The automatic air supply mechanism 1 has a constant pressure maintaining section 2 and a compression section 3. The constant pressure maintaining section 2 is configured to maintain the air pressure therein at a constant value and connected to the pneumatic tire mounted on the wheel body 110 in air flow communication. The compression section 3 compresses air when the wheel body 110 is rotated with respect to the axle 101 and feeds the compressed air into the constant pressure maintaining section 2.

Abstract: An assembly for inflating a tire includes a pump assembly that includes a housing having an air inlet and an air outlet. A conduit is fluidly coupled to the air outlet. The housing has a first end wall, a second end wall and a peripheral wall. A bracket is attached to the housing and is positioned on the peripheral wall for removably securing the housing to a spoke of a tire. The actuator includes a disc rotatably coupled to the pump assembly wherein rotation of the disc actuates the pump assembly. A valve assembly is fluidly couples the conduit to a valve stem of the tire. A plate is removably attached to a frame of a bicycle such that an axle of the tire extends through the plate. The plate is selectively abutted against the disc such that the disc rotates when abutted the plate and rotated around the axle.

Abstract: A device is disclosed for pumping the tire of a vehicle while the vehicle is travelling. The device is mounted on the wheel axle and, apart from a hanging counterweight (226) which remains stationary, the entire device rotates with the axle and wheels. Tire pressure is sensed and, when below a predetermined level, a piston (22) moves axially to press a rotating clutch plate (260) against the stationary counterweight (226). The clutch plate (260) thus stops rotating. Part of a pump drive structure (216) stops rotating with the clutch plate (260). Relative rotation between this part of the pump drive structure and the remainder of the pump drive structure causes air to be pumped to the tire. When tire pressure has been restored the piston (22) moves back, the clutch plate (260) is released, and the pumping action ceases.

Abstract: A generator system powered by a fluid fly-wheel is disclosed that generates electric current to power a tire pressure maintenance and monitoring system. A vehicle wheel including a tire and a rim. A sealed tube containing fluid is fixed around the rim. When the rim accelerates or decelerates, the fluid within the tube moves within the tube a turbine in communication with the fluid is turned by the moving fluid within the tube. The turning turbine drives an electric generator to produce an electric current through induction. In certain configurations, the turning turbine rotates gears to drive a mechanical pump. The electric generator, or mechanical pump may be used to add air pressure to the tire when a sensor indicates low air pressure.

Abstract: A diaphragm for a diaphragm pump is in the form of a vehicle tire. The vehicular tire has a first mounting face, a second mounting face and a circumferential tread portion positioned between first mounting face and the second mounting face. A first sealing disk is secured to the first mounting face of the tire. A second sealing disk is secured to the second mounting face of the tire. An inlet valve positioned on either the first sealing disk or the second sealing disk. An outlet valve is positioned on either the first sealing disk or the second sealing disk.

Abstract: A diaphragm for a diaphragm pump is in the form of a vehicle tire. The vehicular tire has a first mounting face, a second mounting face and a circumferential tread portion positioned between first mounting face and the second mounting face. A first sealing disk is secured to the first mounting face of the tire. A second sealing disk is secured to the second mounting face of the tire. An inlet valve positioned on either the first sealing disk or the second sealing disk. An outlet valve is positioned on either the first sealing disk or the second sealing disk.

Abstract: A water system includes a reciprocating pump operated by pedal and motor delivered solar power, including one-way engagement clutch elements preventing hazardous pedal movement and potential motor damage. The pumpstand includes a housing in which a foot pedal and a drive shaft rotate. An eccentric pin, rotating with the drive shaft, moves a connecting rod, which in turn causes a pushrod to oscillate vertically. The pushrod extends into a pressure-tight chamber formed above the rising main (well pipe). A pumprod connected to the pushrod extends to move a conventional plunger through vertical oscillations. A flywheel is attached to the drive shaft, and a counterweight is mounted on the flywheel diametrically opposite the eccentric pin. The radial distance from the drive shaft to the counterweight can be adjusted. A discharge pipe extends from the pressure-tight chamber to an elevated or pressurized storage tank.

Abstract: A tire pump mounted upon a wheel includes a reciprocating piston driven by one of a pendulum assembly or flywheel.

Abstract: Disclosed is a tuned resonant oscillating mass pump, and particularly a pump structure and assembly which can be conveniently and readily mounted inside automotive tires for the purposes of maintaining optimum tire pressure and generating of electrical power from the movement of the tuned oscillating mass in such pumps. The oscillating mass can be a pendulum or a freely moving weight or a ball rolling within an arcuate chamber.

Abstract: A tuned resonant oscillating mass pump is shown, and particularly a pump structure and assembly which can be conveniently and readily mounted inside automotive tires for the purposes of maintaining optimum tire pressure and generating of electrical power from the movement of the tuned oscillating mass in such pumps. The oscillating mass can be a pendulum or a freely moving weight or a ball rolling within an arcuate chamber.

Abstract: A water system includes a reciprocating pump operated by pedal power. The pumpstand includes a housing in which a foot pedal and a drive shaft rotate. An eccentric pin, rotating with the drive shaft, moves a connecting rod, which in turn causes a pushrod to oscillate vertically. The pushrod extends into a pressure-tight chamber formed above the rising main (wellpipe). A pumprod connected to the pushrod extends to move a conventional plunger through vertical oscillations. A flywheel is attached to the drive shaft, and a counterweight is mounted on the flywheel diametrically opposite the eccentric pin. The radial distance from the drive shaft to the counterweight can be adjusted. A discharge pipe extends from the pressure-tight chamber to an elevated or pressurized storage tank. A distribution pipe from the storage tank feeds water to a number of distribution points, such as faucets in houses.

Abstract: Disclosed is a tuned resonant oscillating mass pump, and particularly a pump structure and assembly which can be conveniently and readily mounted inside automotive tires for the purposes of maintaining optimum tire pressure and generating of electrical power from the movement of the tuned oscillating mass in such pumps. The oscillating mass can be a pendulum or a freely moving weight or a ball rolling within an arcuate chamber.

Abstract: An apparatus for pressurizing a pneumatic tire mounted on a vehicle wheel which includes a displacement type air pump having a spring loaded piston and cylinder combination for generating air under pressure. The air pump is axially attached to the vehicle wheel and an air pressure connection conduit introduces air under pressure generated from the pump into the pneumatic tire. A cam and cam follower arrangement is mounted in the housing for the pump for creating relative cam actuated movement therebetween which is utilized for driving the air pump. A pendulum is mounted for free axial rotation relative to the pump housing and the pendulum is connected to one of the cam or cam follower, and the other is secured to the pump housing for rotation therewith to provide this cam actuated driving movement. The axis of piston reciprocation in its cylinder is substantially aligned axially with the wheel axis of rotation.

Abstract: A device for automatically maintaining desired air pressure within a vehicle tire utilizes inertial forces from changes in vehicle speed. The device includes a flywheel attached to and concentric with the vehicle wheel but free to rotate relative the wheel, and an air compressor attached to the vehicle wheel and connected to the tire, the compressor piston responsive to rotation of the flywheel with respect to the vehicle wheel to pass air into the tire. Preferably a connecting rod converts the rotation of the flywheel relative the wheel into the reciprocating sliding of a piston to operate the air compressor. Additionally, a centrifugal intake valve is preferably provided that seals off the inlet passageway to the air compressor when the vehicle is stopped or moving slowly to prevent contaminants from entering.

Abstract: A self-inflating tire pump is integrally fixed to a wheel of a vehicle for automatically pumping air into an inflation region of a tire which is mounted on the wheel. The pump includes a piston which is movable radially outward in a cylinder by centrifugal force to draw air from the atmosphere into a compression chamber and is movable radially inward by a biasing element to compress the air in the compression chamber and pump it into the inflation region. The biasing element includes a surface of the piston which is exposed to air pressure in the inflation region, and prevents the piston from moving outward until the wheel rotates above a certain speed, thereby preventing contaminants such as water and dirt from entering the compression chamber during low speed operation of the vehicle in adverse terrain. A stopper mechanism prevents the piston from moving when the tire pressure is above a normal value, thereby reducing frictional wear of the pump.

Abstract: This invention pertains to the maintenance of pressure within a vehicle wheel tire to a pre-set level with the air supply being produced by a pump which is driven by centrifugal force, i.e., the wheel rotation creates a centrifugal force which activates a weight to move a piston which pumps the tire inlet air. The pump can be mounted outside or inside the tire volume. Another pump uses the impetus from bumps encountered by the wheel to drive the pump.

Abstract: A high pressure air reservoir, a pump unit and an air pressure sensor are provided on each wheel of a motor vehicle. The sensor senses the air pressure in a tire which is mounted on the respective wheel. The pump unit is controllable to selectively pump air from the tire into the reservoir to deflate the tire, or to cause air to flow from the reservoir into the tire to inflate the tire. A control unit which displays the sensed air pressure and controls the pump unit to inflate or deflate the tire is mounted inside the vehicle for operation by the driver, and is electrically connected to the sensor and pump unit by brush contacts provided between the wheel and axle or inductive coils provided between the wheel and an adjacent structural member of the vehicle.

Abstract: Apparatus for harnessing and utilizing, inter alia, gravitational and centrifugal forces generated at a location eccentric from the axis of rotation of a rolling wheel. The apparatus includes pumps that can be attached in a tangential relationship to a path of wheel rotation of an automobile wheel in order to pressurize under-inflated tires and maintain tire pressure at a preset value. A double acting unitary piston assembly is supported for antifrictional reciprocation in a pump housing along a line tangential with respect to a path of wheel rotation so that gravitational force will principally displace the piston assembly to effect working strokes for inflating a pneumatic tire. Compression ratio parameters of the pump are preselected to cause the pump to be effective at wheel rotation velocities above which gravitational forces are no longer effective to operate the pump. A device is also provided to adjust the compression ratio of the pump to thereby adjust the air pressure to be maintained in the tire.

Abstract: An air pump for use with a chain-driven bicycle having a free wheel. The pump assembly comprises a pair of opposed cylinders and a double-ended piston rod mounted in a housing. The piston rod has a bearing slot, which engages a crank pin on a crankshaft driven by a sprocket. Rotation of the sprocket reciprocates the double-ended piston rod in the cylinders. The cylinders are each integrally formed with a manifold that uses an elastomeric band covering a passage from the cylinder interior to inside the manifold as a one-way valve. An enlarged diameter skirt on each cylinder allows air to enter the cylinder on each intake stroke. A cap defining the piston head is locked onto each piston and holds a seal in place on the piston. An integral clamp assembly allows the pump to be removably mounted on a bicycle chain stay. The lower run of the bicycle drive chain engages the drive sprocket of the pump assembly, and a chain retainer is used to maintain the engagement of the drive chain with the drive sprocket.

Abstract: A reservoir is formed in a wheel of a vehicle for storing high pressure air for inflating a tire mounted on the wheel. A regulating valve communicates the reservoir with the tire when the air pressure in the tire drops below a predetermined value to maintain the tire fully inflated. A mechanism for automatically replenishing the high pressure air in the reservoir includes a radially extending bore formed in the wheel, and a piston which is sealingly movable in the bore. A variable volume compression chamber is defined in the bore between the radially outer ends of the bore and the piston. When the vehicle is stopped, a relatively weak spring urges the piston to a radially innermost position in which an inlet check valve opens to allow communication of the chamber with the atmosphere so that the chamber can be filled with fresh air.

Abstract: An automotive bicycle tire pump is disclosed in which a cylinder and piston assembly rotates with the wheel rim and tire. The piston is reciprocated by contact with a stationary cam to provide pressurized air to the tire. When the proper tire pressure is reached, the piston is automatically latched in a position out of contact with the cam to prevent reciprocation of the piston.

Abstract: A hydraulic system including hydraulic units serving as wheel motors and pumps is disclosed. The hydraulic units include a stationary member supporting cylinders with piston assemblies reciprocating therein. The piston assemblies have bodies and follower assemblies which follow lobes on a rotary cam. The piston assemblies serve both as pistons and as timing valves for controlling the flow of fluids. The piston assemblies may have either undercuts or internal passages in their bodies. The follower assemblies have compliant springs elastically positioning rollers between arms of a yoke to allow lateral movement of these rollers relative to the arm of the supporting yokes. Sealing mechanisms are provided which seal between the rotary cam and the stationary member to form an annular scavenge chamber. At least one sealing mechanism has a non-rotating annular intermediate member which pilots relative to the rotary cam. A static seal accommodates radial movement between the stationary and intermediate members.

Abstract: An air pump for use with a chain-driven bicycle having a freewheel. The pump assembly comprises a pair of opposed cylinders and a double-ended piston rod mounted in a housing. The piston rod has a bearing slot which engages a crank pin on a crankshaft which is driven by a sprocket. Rotation of the sprocket reciprocates the double-ended piston rod in the cylinders. A hook-shaped extension of the housing fits over the top of the chain stay of the bicycle, and a vertically movable clamping member provided with a ratchet mechanism abuts the underside of the chain stay; a lever operated cam clamps the chain stay intermediate the hook portion and the clamping member. The lower run of the bicycle drive chain engages the drive sprocket of the pump assembly. Reverse rotation of the bicycle's crank assembly causes the conventional freewheel to also rotate in a reverse direction without rotating the wheel of the bicycle.

Abstract: The present invention relates to a shock absorber pump/compressor which comprises attachments to the car's chassis and to the wheel axle housing; a rack gear that is set into a reciprocating motion as the car runs on the uneven surface of the road; a pinion gear that is rotated back and forth by the rack gear; a crank that is attached fixedly to the shaft of the pinion gear and which sets a double piston to move in a reciprocating manner. A diaphragm is attached to each piston head and the periphery of each diaphragm is clamped tightly between the cylinder and a cylinder head. The interior of each cylinder head and a diaphragm form a contractive and expansive space which draws in fluid from an outside source as the space expands and forces the fluid out as the space contracts. At the same time as fluid is drawn into one contractive/expansive space, fluid is forced out of the other space at the other end of the double piston.

Abstract: Apparatus for harnessing and utilizing, inter alia, cyclic forces generated at a location eccentric from the axis of rotation of a rolling wheel. The apparatus may include, for example, pumps that can be attached to the valve stem of an automobile wheel in order to pressurize under-inflated tires and maintain tire pressure at a preset value.

Abstract: In order to provide for the deflation of a tire, there is provided an orie in the rim of a wheel, a pusher element extending through the rim in a gas tight manner, the pusher element having one end communicating with gas pressure inside the tire and including means for selectively closing the orifice. The pusher element is mounted to the rim for movement between a first position wherein the means for selectively closing closes the orifice and a second position wherein the means for selectively closing opens the orifice. The pusher element has another end outside of the tire with a cam mounted thereto. A presser means mounted to be stationary relative to the rotation of the tire selectively engages the cam and moves the pusher element to the second position to control the opening of a valve to deflate the tire.

Abstract: To assure inflation of a tire 2 during its rotation, a hose 3 is placed on he inside periphery of rim 1. A pressure roller 5, solid with the wheel carrier and therefore non-rotatable, causes a local reduction in the section of hose 3. During rotation of tire 2, air is forced from an orifice 31 forming an air intake, to an inside volume 20 of tire 2, via a check valve 4. To provide deflation, a roller rests on a pusher which controls the opening of valve 4.

Abstract: To achieve a flywheel effect and lower the power necessary to drive it, a float pump is modified and put to use in such a way that one-half of the stroke of the pump is powered by the negative or positive buoyancy of the system of reciprocating components through which the pump is operated. As a result, the pump can be powered by even human leg power, such as by driving it through a pair of cranks pedalled in the manner of a bicycle. A reciprocable drive mechanism for the pump is also disclosed and claimed.

Abstract: A vehicle having a plurality of ground engaging wheels has included, in at least one of said wheels, a hydraulic pump/motor device. The hydraulic fluid for the pump/motor device is stored in a toroidal tire portion of the wheel while the pump/motor is disposed in a hub portion of the wheel. The hydraulic fluid is drawn from a sump reservoir in the tire portion and is pumped to a high pressure liquid/gas accumulator in the tire portion during vehicle braking. When desired, the high pressure fluid is returned through the pump/motor to the sump reservoir during which time the energy of the high pressure fluid is delivered to the vehicle through the motoring action of the pump/motor.

Abstract: A tire pressurizing system is provided for automatically pressurizing a pneumatic tire. The system employs centrifugal force to actuate a pump which is attached to the interior of the tire. Centrifugal force causes a pump actuating member to follow a different orbital path around a rotating tire from the path of the pump housing, which is attached to the tire. The difference is due to the flexing of the tire in the load bearing "footprint" area. The result is reciprocation of the actuating member, which in turn operates a pump. Piston and diaphragm pump embodiments are disclosed. An automatic pressure regulator is also provided.

Abstract: A vehicle wheel-tire assembly wherein the tire has a low inflation pressure (large tire footprint) in a low vehicle speed range, and a large inflation pressure (small tire footprint) in a high vehicle speed range. The tire is partitioned into a series of circumferential compartments, with each compartment being provided with a valve mechanism for introducing air into the compartment and/or withdrawing air from the compartment as needed to maintain desired inflation pressures in the different vehicle speed ranges. The system is contained entirely in the wheel-tire assembly; no external air compressors or control valves are utilized.

Abstract: A fluid powered generator mounted on a vehicle or the like including a cylinder depending from one arm of an A frame via an enclosing cap, a sealed tube extending upwardly from another arm of the A frame and tightly and slidably disposed within a hollow of the cylinder, a closed chamber formed between the sealed tube and a top portion of the cylinder serving as a first damping device, a piston disposed within the sealed tube having a stem portion extending therewithout and depending from one arm of the A frame, and a plurality of valves above and below a piston face provided with suitable conduits to effect the ingress and egress of fluids above and below the piston in response to changes in the distance between the upper and lower arms.