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| Number | Title | Issue Date |
| 4430048 | Diaphragm pump with a diaphragm clamped in pressure-balancing arrangement In a diaphragm pump the diaphragm separating the delivery chamber from the working chamber is clamped between a cylinder body and a cylinder cover in pressure-balancing arrangement. For this purpose a pressure-balancing space is provided to be radially ou... | 02/07/1984 |
| 4406595 | Free piston pump In accordance with the present invention, a pumping unit (10) is disclosed. The pumping unit includes shell structures (20, 22) each having a diaphragm (32, 38) therein to divide the pumping chamber within the structure into first and second compartments.... | 09/27/1983 |
| 4403925 | Diaphragm fuel pump and associated method A pneumatically operated diaphragm fuel pump comprising a ram actuated by a diaphragm and arranged in a drive chamber and a reversible lever subjected to the action of a tension spring for actuating suction and air-inlet valves. The lever is locked with r... | 09/13/1983 |
| 4397049 | Hydraulically actuated cardiac prosthesis with three-way ventricular valving A cardiac prosthesis having an hydraulically actuated compressible blood pump. An actuation chamber adjacent the blood pump receives hydraulic actuation fluid from an actuator pump through a three-way ventricular dump valve to compress the blood pump duri... | 08/09/1983 |
| 4389737 | Hydraulically actuated cardiac prosthesis with three-way ventricular valving A cardiac prosthesis having a hydraulically actuated compressible blood pump. An actuation chamber adjacent the blood pump receives hydraulic actuation fluid from an actuator pump through a three-way ventricular dump valve to compress the blood pump durin... | 06/28/1983 |
| 4390325 | Pump driven by the radiation energy of the sun A pump driven by the radiation energy of the sun, wherein the radiation energy is converted into mechanical energy by means of a liquid evaporated by the effect of the radiation heat. The pump has a face that absorbs radiation and a casing part whose insi... | 06/28/1983 |
| 4386888 | Double diaphragm operated reversing valve pump A reciprocating fluid pump has a dual piston element and dual diaphragms in fluid communication therewith. Full movement of the dual piston element in either direction of movement causes movement of a pilot valve which simultaneously vents a first working... | 06/07/1983 |
| 4381567 | Hydraulically actuated total cardiac prosthesis with reversible pump and three-way ventricular valving A total cardiac prosthesis having a pair of hydraulically actuated compressible blood pumps. An actuation chamber adjacent each blood pump receives hydraulic actuation fluid from a separate actuator pump to compress the blood pump during systole and eject... | 05/03/1983 |
| 4378201 | Diaphragm pump having spool and guide members An improved hydraulic pump wherein a piston is mechanically reciprocated by a suitable drive in an oil chamber, and a second piston is caused to reciprocate by the oil pressure developed in the chamber, the second piston also reciprocating in a pumping ch... | 03/29/1983 |
| 4376312 | Hydraulically actuated cardiac prosthesis A cardiac prosthesis having a hydraulically actuated compressible blood pump. An actuation chamber adjacent the blood pump receives pulses of hydraulic actuation fluid from an actuator pump through a fluid inlet path to compress the blood pump during syst... | 03/15/1983 |
| 4375346 | Diaphragm pump A diaphragm pump is described comprising a reciprocated diaphragm for expanding and contracting a chamber communicating with a passageway connecting the housing inlet and outlet for pumping a fluid therethrough, and a pair of check valves in the passagewa... | 03/01/1983 |
| 4372208 | Device for supplying with ink printing apparatus for cigarette-making machines This device consists of a pump which delivers ink from a tube of ink to a reservoir device of the apparatus called ink trough, this tube of ink being tightly fitted to a first bore of the pump, and a duct, one end of which is tightly fitted to a second bo... | 02/08/1983 |
| 4369530 | Hydraulically actuated cardiac prosthesis and method of actuation A cardiac prosthesis having a hydraulically actuated compressible blood pump. An actuation chamber adjacent the blood pump receives pulses of hydraulic actuation fluid from an actuator pump through a fluid inlet path to compress the blood pump during syst... | 01/25/1983 |
| 4334838 | Diaphragm type fluid pump having a flexible diaphragm with an internal reinforcing plate A pneumatically powerable single action fluid pump has a housing, an improved diaphragm assembly dividing the housing into fluidly discrete propellant and pumping chambers, a fluid inlet and outlet in the pumping chamber, a fluid port to the propellant ch... | 06/15/1982 |
| 4319570 | Tracheal suction pump designed primarily for aspiration purposes A portable suction pump for life-saving purposes and normally driven by compressed gas. The pump includes a pump assembly having a suction chamber with an outlet leading to the ambient atmosphere and an inlet communicating with a secretion-receiving reser... | 03/16/1982 |
| 4303376 | Flow metering cassette and controller A cassette and controller for accurately controlling fluid flow through an administration set while maintaining a closed fluid system. Inlet and outlet conduits are defined in a body of the cassette and inlet and outlet valves control fluid flow through t... | 12/01/1981 |
| 4265600 | Pump apparatus A pump for transferring precise amounts of fluid from a container to a patient. A pump apparatus has a defined volume pump chamber divided by a diaphragm into a pumping fluid portion and a pumped fluid portion. The pumped fluid portion receives and exhaus... | 05/05/1981 |
| 4247519 | Exhaust gas treatment device for injection molding machines An exhaust gas treating device for injection molding machines, in which a vent port of a vented injection machine is connected to a vacuum and an exhaust gas treating mechanism for treating the gas discharged from the vent port characterized in that a mis... | 01/27/1981 |
| 4247264 | Air driven diaphragm pump A pump assembly for an air driven diaphragm pump mechanism having opposed pump cavities with the actuator valve mechanism located between these cavities. An inlet manifold and an outlet manifold each extend to both of the opposed pump cavities and are pos... | 01/27/1981 |
| 4207034 | Pump without motoric drive A heat operated pump comprising: a boiler containing a driving fluid; means for heating said driving fluid in said boiler; condenser means; a pumping chamber including a flexible partition sealingly disposed in said chamber to define first and second sealingly sepa... | 06/10/1980 |
| 4204812 | Vacuum system Disclosed is a vacuum pump device that is adapted to create a vacuum source from a source of high pressure air. The device comprises a piston actuated in one direction by compressed air and in the opposite direction by a power return spring. The compresse... | 05/27/1980 |
| 4199535 | Diaphragm pump A diaphragm pump operated by vacuum pressure and having a switching arrangement to control the continuous alternations between the intake stroke caused by vacuum pressure and the working stroke caused during venting by a spring after the end of each strok... | 04/22/1980 |
| 4178240 | Fluid handling system A system for handling two liquid streams comprises an hydraulic circuit including a pair of receptacles each provided with movable partition means dividing it into first and second chambers. Rod means extending through a first chamber of each receptacle c... | 12/11/1979 |
| 4177020 | Heat-powered water pump A heat-powered water pump including a flash boiler and a metering device for metering a predetermined quantity of condensate to the flash boiler. A flexible pumping member is enclosed in a pumping chamber and is expanded by the vapor to force water from t... | 12/04/1979 |
| 4168288 | Combined carburetor and impulse fuel pump A combined float bowl carburetor and fuel pump for small engines has a lateral extension on its carburetor body that terminates at a flat exterior surface to which open certain cavities and a passageway leading to the float valve inlet. A block-like pump ... | 09/18/1979 |
| 4162549 | Filtering elements A back-washable filtering element, especially for use with pumps, and more particularly for use with pumps that handle liquids with solid material entrained therein, consists of a helical coil spring disposed in a flow path for the liquid to be filtered. ... | 07/31/1979 |
| 4149372 | Fuel reclaiming system This invention relates to apparatus and means for reclaiming surplus fuel trapped in the fuel manifold system upon engine shutdown and includes a variable volume chamber operable as a function of and by motive power from the engine pneumatic starter and u... | 04/17/1979 |
| 4144595 | Artificial heart chamber An artificial heart chamber is structured with a nondeformable housing, with valves being provided in the housing for admitting and ejecting blood from the chamber, the valves including valve openings which communicate with the chamber. A diaphragm is mou... | 03/20/1979 |
| 4141467 | Fluid driven liquid dosing apparatus The invention relates to an apparatus for dosing a liquid product into water, particularly for dosing a liquid detergent product into the water stream fed to domestic washing machines. The apparatus is driven by the water pressure and therefore consists o... | 02/27/1979 |
| 4123204 | Double-acting, fluid-operated pump having pilot valve control of distributor motor A reciprocating, fluid operated pump, which is reversed at opposite ends of its travel by shifting of a directional valve, is characterized by a control valve for rapidly and completely shifting the directional valve. In the disclosed embodiment, the pump incl... | 10/31/1978 |
| 4121236 | Aperture card camera with device for spraying the exposed film An aperture card camera is provided with a spraying device for supplying to the exposed film a liquid such as a developer or the like. The liquid is sucked from an open supply container which is under atmospheric pressure. The liquid is then delivered to ... | 10/17/1978 |
| 4116590 | Diaphragm pump with pulse piston position responsive work fluid replenishment A high pressure pump in which at least one reciprocatingly driven piston acts on a hydraulic fluid communicating with one side of a diaphragm, the other side of the diaphragm communicating with a fluid to be displaced by the pump. The diaphragm is made of... | 09/26/1978 |
| 4110058 | Vacuum-operated liquid pump A vacuum-operated liquid pump includes a pumping member and a housing defining a pump chamber in which the pumping member moves along suction inlet and pressure discharge strokes. The pumping member divides the pumping chamber into a liquid space on one s... | 08/29/1978 |
| 4094146 | Solar engine A solar engine including an air motor driven by a quantity of pressurized hot air from a solar heater vessel and including an air pump for pumping substantially an equal mass of cool air back into the solar heater. The driving action of the air motor and ... | 06/13/1978 |
| 4093403 | Multistage fluid-actuated diaphragm pump with amplified suction capability Disclosed herein is a fluid-actuated, diaphragm pump which is particularly adaptable for use as a fuel pump for a multi-cylinder, two-cycle internal combustion engine and which includes an inlet chamber, an outlet chamber, a first diaphragm separating the... | 06/06/1978 |
| 4068641 | Metered fuel injection apparatus Disclosed is a novel system and apparatus for metering fuel with a flexural diaphragm-like divider-wall to injector nozzles for multi-cylinders combustion engines, the divider-wall providing a barrier between a fuel-chamber and a hydraulic-chamber and bei... | 01/17/1978 |
| 4050859 | Diaphragm pump having a reed valve barrier to hydraulic shock in the pressurizing fluid Apparatus for an improved diaphragm pump wherein hydraulic shock and mechanical wear to the diaphragm membrane is reduced by providing a circular reed valve member adjacent to the diaphragm. The reed valve member provides a barrier to pressurized hydrauli... | 09/27/1977 |
| 4047844 | Blood pumping system A blood pumping system has a pair of integral flexible bodies each provided with an inlet and an outlet and disposed in open top cavities in a housing. The cavities have extensions holding inlet valves and outlet valves for opening and closing the inlets ... | 09/13/1977 |
| 4021164 | Pump having reciprocating pumping means Pump comprising reciprocating pumping means driven by a periodically varying pressure in a hydraulic or pneumatic driving device. The driving device comprises an ejector supplied with a driving medium causing alternating pressure reductions and increases ... | 05/03/1977 |
| 4021157 | Diaphragm pumps driven by pulse pistons A diaphragm pump having a pump chamber divided into two portions by a diaphragm of elastomeric material which is generally of hemispherical shape and clamped at its periphery in the pump chamber. The portion of the chamber including the interior of the di... | 05/03/1977 |
