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| Number | Title | Issue Date |
| 4445333 | Valve assembly A master cylinder assembly has a low pressure, high volume displacement quick take-up chamber and a high pressure, low volume displacement pressurizing chamber formed by a stepped bore and a stepped piston. A compensation control and blow-off valve unit h... | 05/01/1984 |
| 4440308 | Fuel cap valve structure A fuel cap has a valve structure for controlling both superatmospheric and subatmospheric pressures in a fuel tank. The valve has a plate or flat disc member with two apertures formed therein. A grommet is secured in each aperture. A pair of resilient val... | 04/03/1984 |
| 4411603 | Diaphragm type blood pump for medical use A positive displacement pump for delivery of blood, or the like, from patients to an extracorporeal circuit, for purification, as in hemodialysis treatments. The pump is small, and sufficiently inexpensive to be discarded after one use. The pump comprises... | 10/25/1983 |
| 4398908 | Insulin delivery system Insulin delivery system comprises insulin reservoir, pump and subcutaneous needle. Pump is electromechanically-driven at a preselectable fixed rate and can be additionally actuated to deliver a preprandial bolus of selected dosage.... | 08/16/1983 |
| 4292999 | Valve for toy balloons The invention relates to a valve for toy balloons, this valve opening inwardly under very minor excess pressure and yet providing a tight seal by means of an additional cap. A container surrounding the valve and flaring conically serves for introducing th... | 10/06/1981 |
| 4290455 | Reed valve A reed valve in the form of a plate fixed at one end and bendable into and out of contact with a valve seat is operated by differential pressures and acts as a check-valve. The reed valve has cavities in the surface thereof with unitary strengthening fram... | 09/22/1981 |
| 4257458 | Reed valve In a reed valve of the type having a base formed with one or more apertures through which flows a fluid, a shock absorbing seat attached to the upper surface of the base so as to surround the one or more apertures at the inner peripheral edge thereof, and... | 03/24/1981 |
| 4251053 | Diaphragm device In a diaphragm device, a round diaphragm of flexible material comprising a rim clamped between and sealingly gasketing upper and lower housing members, a coaxial annular arched vault within and circumferentially continuously joined at its outer periphery ... | 02/17/1981 |
| 4235206 | Two cycle internal combustion engine A two-cycle internal combustion engine having reed-type intake valving, and especially configured and positioned intake and injector porting, with the porting constructed and arranged to improve various of the operating characteristics of the engine, and ... | 11/25/1980 |
| 4230149 | Fluid flow regulating valve and system A fluid flow regulating valve is inserted in line with a fluid conducting medium to regulate the flow therethrough over a widely varying range of pressure differentials across the valve. The valve is constructed of a body portion having a fluid passageway... | 10/28/1980 |
| 4228770 | Internal combustion engine fuel supply system A fuel supply system for an internal combustion engine having inlet porting and a fuel supply passage with valve means therein, the cross-sectional area lying within the outside passage walls being greater in the region of the valve means than in a region... | 10/21/1980 |
| 4222407 | One-way flex valve A check valve is provided comprising a cap having an inlet port and a body with an internal recess whose periphery is engaged with the cap and contains an outlet port. A rib extends across the body recess and is supported and urged against the cap by the ... | 09/16/1980 |
| 4218783 | Prosthetic closure element for the replacement of the mitral and tricuspid valve in the human heart A prosthetic heart valve has a tubular valve housing, a suture ring, and a membrane-like gate supported within the housing. The flexible membrane is generally elliptical in shape and is fastened in the housing along half its periphery. Flexure of the memb... | 08/26/1980 |
| 4215725 | Deaerating valve for bagging pulverulent products A deaerating valve for bagging fluidized pulverulent products into sacks of the open-mouth type. The valve includes a filtering sheet housed on the inside of the sack to be filled, this sheet having a texture and a thickness such that it multiplies the su... | 08/05/1980 |
| 4201317 | Finger actuated pump assembly A manually operable dispenser pump construction wherein liquid product is received from a supply container into an axially compressible bellows. The bellows in turn includes product discharge valve means associated therewith and adapted to move between op... | 05/06/1980 |
| 4193424 | Lamina valve for reciprocating compressors In a valve where a port is opened and closed by movement of a lamina away from or towards the port, the lamina is held between two adjacent parts of the valve. To ensure that the lamina is held rigidly in place, it is provided with resiliently deformable ... | 03/18/1980 |
| 4180377 | Valve element for an air pump A valve element for a small sized air pump. The valve element has legs, each of which are tightly secured within holes of valve-beds of a valve casing. A longitudinal hole is formed within each of the legs. The hole of the leg is opened at one end and clo... | 12/25/1979 |
| 4179051 | One-piece check valve for use in a fluid dispenser There is disclosed herein a one-piece check valve for use in an applicator tip for fluid substances, or the like, comprises a reed portion and a valve seat portion and an interconnecting integral hinge section, permitting the respective portions to be fol... | 12/18/1979 |
| 4173985 | Straightway valve A straightway valve for a positive-displacement machine comprises a polyhedral body with outlet ports and seat surfaces on the sides thereof, flat friction-free closure plates, and a means for attachment of the closure plates to the body, which takes the ... | 11/13/1979 |
| 4167200 | Distribution device for a pneumatic installation Improved distribution device constituted by a base and a distributor associated therewith, having internal channels in which the pneumatic fluid circulates normally only in one direction. At least one of these channels possesses a non-return valve dispose... | 09/11/1979 |
| 4164238 | Closing plate for a ring valve A closing plate for a ring valve, in particular a suction or pressure valve of a piston compressor, which is intended to be arranged on a valve seat with arcuate-shaped through-flow passages and comprises at least one concentric ring and at least one conc... | 08/14/1979 |
| 4160383 | Unitary sample-vent-valve assembly A unitary sample-vent-valve assembly, useful in urological applications, is described. The unitary assembly comprises a sequential arrangement of valve, vent and sampling port to afford a compact unit.... | 07/10/1979 |
| 4137016 | Valve mechanism for an air pump An improved valve mechanism for a small sized air pump, having valve elements each of which is secured in a housing of a valve casing. The valve element has a semi-circular portion and a tongue. The semi-circular portion is trapezoidal and snuggly and fir... | 01/30/1979 |
| 4122993 | Pressure-equalizing valve for a packaging container A packaging container having a pressure equalizing or venting valve which includes a valve seat, a pair of opposed faces and a valve opening therebetween. One of the faces is adapted to be secured to a wall of the packaging container surrounding an apertu... | 10/31/1978 |
| 4111228 | Respiratory valve, especially for anaesthetic circuits A respiratory valve, especially for use in the circuits of anaesthetic gas devices, having a body member formed with two arms in a V configuration, intended for inhalation and exhalation, respectively, and a tubular mouthpiece fitting. To the two arms are... | 09/05/1978 |
| 4098296 | Variable area reed flow restrictor A variable area reed flow restrictor is presented in which a flexible reed spring is attached at one end to a plate having a shaped flow orifice and extends over the orifice. A fulcrum bar is connected to the plate to define a fulcrum about which the free... | 07/04/1978 |
| 4095750 | Water conduit A water conduit of flexible material serves as an irrigation device or as a drainage pipe. At regular or irregular distance from one another cuts are made in the wall of the conduit resulting in tongue like portions which adhere to the wall of the conduit... | 06/20/1978 |
| 4088428 | Discharge valve assembly for a compressor A rotary compressor having a discharge check valve and retainer assembly in which the valve is a reed type valve mounted on the retainer and the retainer having spaced locating projections for positioning the assembly in a valve chamber. The retainer has ... | 05/09/1978 |
| 4036614 | Pressure relief means for industrial vacuum Relief valve means for dissipating positive compressor pressures which could exist within an industrial vacuum unit after the unit is shut down. A high capacity one-way flow type of valve is mounted on the unit to allow a vacuum to be created within the u... | 07/19/1977 |
| 4024889 | Dynamic control valve for modifying fluid flow A fluid flow control valve comprising a substantially cylinder-shaped body for insertion in a tube or pipe, said body having an annular recess therearound for the reception of a resilient O-ring to effect a seal between said body and the inner surface of ... | 05/24/1977 |
| 4022245 | Sight check valve A swing type check valve is connected by a double compression coupling to an irrigation pipe. The compression sleeve over the valve is transparent so that the valve may be sight checked or visually inspected.... | 05/10/1977 |
| 4015624 | Tire valve A valve assembly having a pair of flow passages in fluid communication with a chamber leading to a tire. One of the passages contains a typical one-way valve core mechanism while the other passage contains a pressure release mechanism. The cross sectional... | 04/05/1977 |
| 3998571 | Valve retainer An economical valve assembly for mounting resilient metal leaf valves for the cylinder of a reciprocating compressor. A valve plate with suction and discharge ports has a discharge leaf or flapper valve with a mounting portion secured thereto by a pair of... | 12/21/1976 |
| 3994319 | Reed type valve formed of high modulus fiber reinforced composite material The specification discloses a reed type valve formed of a composite material having a coherent matrix reinforced with fibers of high strength and high modulus of elasticity aligned along given directions to provide reinforcement against loads to be applie... | 11/30/1976 |
| 3983900 | Reed valves formed of high modulus fiber reinforced resin Reed valves for an internal combustion engine constituted by a thin flexible flat sheet of fiber-reinforced resin containing from 55-63% by weight of fine diameter fiber, this sheet having a tab portion which is restrained in use to provide a cantilevered... | 10/05/1976 |
| 3968925 | Anti-reflux valve An anti-reflux valve mounted at the inlet port to the fluid collection chamber of a fluid collection bag and having a thin flexible valve element which is retained for limited floating movement over the inlet port and which flexes to permit flow of fluid ... | 07/13/1976 |
| 3955901 | Membrane pump An air pressure-operated membrane pump for pumping a liquid comprises a housing including a chamber which is divided into liquid and air compartments by a floppy flexible membrane extending across it. The air compartment has an air inlet and outlet connec... | 05/11/1976 |
| 3955648 | Removable type lubricating fitting A lubrication fitting having a unique fluid flow control device mounted in an opening to prevent flow of fluid therethrough at all times except when specifically actuated to permit fluid flow therethrough. Upon actuation, the fluid flow control device aut... | 05/11/1976 |
| 3954223 | Trickle irrigator A trickle-flow irrigation valve of the type which is installable through the wall of a garden hose, and having a pressure chamber with an inlet passage from the hose and an outlet passage through a wall of the chamber in which are also formed a shallow ch... | 05/04/1976 |
| 3937258 | Flexible flapper A flexible flapper valve covering the opening between manifold and bag assembly in a safety restraint inflatable bag system.... | 02/10/1976 |
