| Patents for F04B 53 - Component parts, details or accessories not provided for in, or of interest apart from, groups or (19,443) |
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| 11/01/1977 | US4056168 Arrangement of the suction funnel of an oil pump in the sump of an internal combustion engine |
| 11/01/1977 | US4055978 Procedure for manufacturing hydraulic plunger-type pump bodies |
| 10/25/1977 | US4055107 Apparatus for removing fluid in a piston cylinder assembly |
| 10/18/1977 | US4054137 Irrigator for body cavities |
| 10/11/1977 | US4053902 Fluid pump for a writing device |
| 10/11/1977 | US4053901 Fluid pump for a writing device having an air ejector feature |
| 10/11/1977 | US4053089 Pump for dispensing liquids |
| 09/27/1977 | US4050862 Multi-plunger reciprocating pump |
| 09/27/1977 | US4050859 Diaphragm pump having a reed valve barrier to hydraulic shock in the pressurizing fluid |
| 09/27/1977 | US4050857 Incoming gated relief valve |
| 09/27/1977 | US4050360 Oil damped piston |
| 09/20/1977 | US4049365 Oil well pump with plunger pull down and desanding assembly |
| 09/13/1977 | US4047854 Metering piston pump with piston-carried distributor for viscous fluid |
| 09/13/1977 | US4047853 Hydraulic unloading and circulating device |
| 09/06/1977 | US4046292 Manual container mounted pump |
| 08/30/1977 | US4045591 Protecting against corrosion by cleaning, cold working, and coating with a stainless steel |
| 08/16/1977 | US4041971 Siphon starting device |
| 07/26/1977 | US4037995 Liquid propellant gun (damper) |
| 07/26/1977 | US4037521 Noise reduction |
| 07/19/1977 | US4036124 Sludge press |
| 07/12/1977 | US4035109 Pump for fluent, and especially heavy and abrasive materials |
| 07/05/1977 | US4033701 Clamp -- self aligning |
| 07/05/1977 | US4033513 Electromagnetically operated valve |
| 06/28/1977 | US4032266 Valve assembly for reciprocating downhole pumps |
| 06/28/1977 | US4032263 Pump with coaxial inlet and outlet valve arrangement |
| 06/21/1977 | US4030495 Twin check valve pump system having fail-safe characteristic |
| 06/14/1977 | US4029261 Piston displacement liquid spray pumps |
| 06/14/1977 | US4029069 Fuel supply pump |
| 06/14/1977 | US4029000 Injection pump for injecting molten metal |
| 06/07/1977 | US4028017 Manure pump having agitator piston |
| 06/07/1977 | US4028013 Pulse multiplier for surface operated single tube pump |
| 06/07/1977 | US4027617 Grating apparatus for protecting the draft port of a water-jet propulsion system |
| 05/31/1977 | US4026322 Reciprocating pump check valve assembly |
| 05/24/1977 | US4025046 Liquid atomisers |
| 05/24/1977 | US4024913 Well installations employing non-metallic lines, tubing casing and machinery |
| 05/17/1977 | US4023592 Pump and metering device |
| 05/17/1977 | US4023469 Piston and piston rod construction for pumps and method of flushing piston-type pumps |
| 05/10/1977 | US4022430 Sucker rod adjustment tool |
| 05/10/1977 | US4022275 Methods of use of sonic wave generators and modulators within subsurface fluid containing strata or formations |
| 05/03/1977 | US4021155 Oil burner pumping system with air purging valve |
| 05/03/1977 | US4021153 Liquid metering pumps |
| 05/03/1977 | US4021151 Unitary reciprocating motor and compressor with gas cushioning |
| 05/03/1977 | US4021149 Fluid driven reciprocating pump |
| 05/03/1977 | US4021148 Hydraulic fluid devices |
| 05/03/1977 | US4020750 Piston pump mechanism |
| 04/26/1977 | US4019661 Liquid dispenser for selective upside down or right side up use |
| 04/19/1977 | US4018547 Pumping by wire elongation |
| 04/19/1977 | US4018545 Mix blending pump |
| 04/19/1977 | US4018248 Valve |
| 04/12/1977 | US4017221 Combined unloading and relief valve for pump unloading circuit |
| 04/12/1977 | US4017214 Packing gland leak retriever device |
| 04/12/1977 | US4017031 Miniature atomizer of manual type |
| 03/29/1977 | US4014629 Pump for pumping both low viscosity and high viscosity fluids |
| 03/29/1977 | US4014318 Circulatory assist device and system |
| 03/22/1977 | US4013387 Oil well pump |
| 03/22/1977 | US4013386 Positive displacement metering pump |
| 03/15/1977 | US4012174 Fuel priming pump |
| 03/01/1977 | US4009971 Electric motor-driven, double-acting pump having pressure-responsive actuation |
| 02/15/1977 | US4008012 Double-acting pump |
| 02/08/1977 | US4006797 Cam actuated lubrication pump |
| 02/01/1977 | US4005747 Multi-flow, multi-path heat exchanger for pump-mechanical seal assembly |
| 01/25/1977 | US4004718 Syringes |
| 01/25/1977 | US4004717 Pressure fed liquid dispenser |
| 01/18/1977 | US4003669 Anti-corrosive insert for sucker rod couplings |
| 01/18/1977 | US4003504 Pump frame |
| 01/04/1977 | US4000790 Lubricant proportioning pump |
| 12/28/1976 | US3999903 Combination thrust and journal bearing |
| 12/28/1976 | US3999896 Continuously operating piston pump |
| 12/14/1976 | US3997081 Apparatus for controlling the operation of a package filling device |
| 12/07/1976 | US3995966 Check valve for a double action pump |
| 12/07/1976 | US3995774 Liquid dispenser having deformable diaphragm type pump |
| 11/30/1976 | US3994631 Pump and pump manifold assembly with adjustable ball valve |
| 11/30/1976 | US3994626 Pump apparatus |
| 11/30/1976 | US3994338 Hydrostatic pressure release for bottom hole oil well pumps |
| 11/30/1976 | US3994208 Piston for high-pressure hydraulic machine |
| 11/09/1976 | US3990816 Double acting piston pump for cryogenic medium |
| 11/02/1976 | US3989419 Valve guide for poppet valve |
| 11/02/1976 | US3989417 Apparatus for converting solar energy into mechanical energy |
| 10/26/1976 | US3987938 Dispensing pump |
| 10/26/1976 | US3987846 Wellhead shut-off valve |
| 10/19/1976 | US3986795 Fuel injection assembly |
| 10/19/1976 | US3986644 Dispensing pump |
| 10/12/1976 | US3984904 Internal retaining tabs for a filled piston |
| 10/05/1976 | US3983855 Fuel injection system |
| 09/28/1976 | US3982765 Piston pump |
| 09/28/1976 | US3982471 Seal in pump piston intermittently permitting conduction of pump fluid |
| 09/21/1976 | US3981635 Material handling system |
| 09/21/1976 | US3981624 Sonic or energy wave generator and modulator |
| 09/21/1976 | US3981620 Pumping apparatus |
| 09/21/1976 | US3981414 Beverage dispensing system |
| 09/21/1976 | US3981360 Well tubing drain |
| 08/31/1976 | US3977809 Controlled discharge pressure pump for pumping liquids |
| 08/24/1976 | US3976402 Intravenous delivery pump |
| 08/24/1976 | US3975910 Variable volume liquid pumping system |
| 08/17/1976 | US3975119 Diaphragm pump having auxiliary chamber |
| 07/06/1976 | US3967542 Hydraulic intensifier |
| 06/29/1976 | US3966360 Continuous-flow fluid pump |
| 06/29/1976 | US3966095 Horizontally-operated pump-type dispenser |
| 06/29/1976 | US3966092 Manually operated man-portable sprayer |
| 06/29/1976 | US3965758 Controllable pumps |