| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Rotary vane pump having multi-independent outputs due to stator surfaces of different contour | US764913 | 1977-02-02 | US4183723A | 1980-01-15 | Lowell D. Hansen; Melvin F. Huber |
| A vane-type double lobe hydraulic pump having a casing with a rotor having a plurality of slots with each slot mounting a vane for tracking of a surrounding cam ring and porting for pumping from both undervane and intervane pumping chambers. The cam ring has two generally elliptical sections of different contour whereby the volumes of fluid pumped by the vanes in coacting with one of said sections differ from the pumped volumes of the vanes when coacting with the other section. In one embodiment, there are four independent volume outputs while, in other embodiments, valve elements control the output of the pump whereby it may be the total of the pumped fluid or lesser amounts including only the volume pumped by the vanes in coacting with one of said cam ring sections or only part thereof. | ||||||
| 122 | Fluid pump | US713909 | 1976-08-12 | US4116588A | 1978-09-26 | Ronald Phillips; James Campbell Melville |
| A fluid pump includes a housing in which is defined a bore. A pump assembly is mounted within the bore a pump assembly including a drive shaft extending through an aperture in an end wall serving to close one end of the bore, the other end of the bore being closed by an end closure. The pump assembly comprises three stator portions and disposed in end to end relationship with each end stator portion and the center stator portion being separated by components of two stages of the pump. | ||||||
| 123 | Multiple displacement pump system having control sequence for unloading valve | US666774 | 1976-03-15 | US4102606A | 1978-07-25 | Melvin F. Huber; Lowell D. Hansen |
| A multiple displacement pump system utilizing a single fixed displacement pump having pumping elements providing both first and second sets of pumping chambers. Circuit means having a fluid utilization conduit provides for delivery of fluid to said fluid utilization conduit which is either the sum of fluid delivered from both sets of pumping chambers or from only one set of pumping chambers. Additionally, the circuit means includes various alternate forms of control dependent upon pressure in a part of the system or on speed of a mechanism utilizing the pumped fluid to establish conditions wherein fluid delivered by the system is at either a desired flow rate or within a range of flow rates at different pressures. | ||||||
| 124 | Viscosity compensating oil burner control system | US600131 | 1975-07-30 | US3972351A | 1976-08-03 | Theodore Schuitemaker; Raymond B. Plass |
| A burner control system comprises a housing defining a reservoir therein and primary and secondary pumps disposed in the reservoir for pumping oil through a viscosity valve and into a burner. The outlet side of the primary pump communicates pressurized oil to the inlet side of the secondary pump directly via intercommunicating conduit means. A back pressure valve communicates with the conduit means to substantially equalize the oil pressure between the inlet and outlet of the secondary pump, discharging the excess oil capacity back into the reservoir. | ||||||
| 125 | Method and apparatus for pumping fuel | US373603 | 1973-06-25 | US3941505A | 1976-03-02 | Pius J. Nasvytis; Milton W. Mueller |
| Method and apparatus for pumping fuel to jet engines and the like utilizing at least two stages, the first of which is a main stage including a centrifugal pump, together with a secondary stage including a positive displacement pump. The two pump stages are driven from a common drive means. In the new system, the positive displacement pump is used as a startup pump and the centrifugal pump is the sole pumping means employed during conditions of higher fuel demand. Speed responsive means are provided in conjunction with the positive displacement pump, which means are responsive to the speed of the centrifugal pump, the speed responsive means being used to terminate pumping action by the positive displacement upon the centrifugal pump reaching a predetermined speed. | ||||||
| 126 | Meshing rotary piston machine with an internal shaft | US3778198D | 1972-07-14 | US3778198A | 1973-12-11 | GIVERSEN S |
| The invention relates to fluid pressure motors and pumps of the type having a gerotor displacement mechanism and an axial type of valve. The casing has inlet and outlet ports and a speed and load control port. The rotary valve has first and second sets of alternately arranged passages with one set having the usual constant fluid communication with the casing outlet port. The other set of valve passages includes some passages in constant fluid communication with the casing inlet port and at least one passage in constant fluid communication with the casing control port. A change over unit has a fluid supply inlet, a fluid exhaust outlet and a control outlet connected to the casing control port referred to above. The change over unit has means for selectively and alternately connecting the control port to the supply inlet and exhaust outlet thereof.
|
||||||
| 127 | Pump | US3639089D | 1970-03-26 | US3639089A | 1972-02-01 | LOCK THOMAS |
| A dual-function pump assembly for pumping liquid with solid contaminants. The primary portion or section of the pump pumps liquid from an inlet to an outlet across a self-cleaning wash flow filter to a location of use. The secondary portion or section pumps clean liquid, which has passed through the filter, to lubricate and purge the running clearances and rubbing surfaces of the assembly.
|
||||||
| 128 | Integrated pump-control system using a unitized pump | US3614269D | 1970-03-09 | US3614269A | 1971-10-19 | LANCTOT ROBERT S |
| An integrated fuel pump and control system has a unitized pump which includes three pumping circuits. A first pump circuit includes a positive displacement gear pump to provide fuel to a gas turbine engine from startup to just below idle. A second pump circuit includes a high-flow centrifugal pump, and a third circuit includes a low-flow centrifugal pump. A pump switching arrangement automatically switches from the first circuit at an engine speed slightly below that of ground idle to either the second or third circuit depending on the engine fuel requirements.
|
||||||
| 129 | Wear equalized fuel delivery system | US3601506D | 1969-11-28 | US3601506A | 1971-08-24 | GRISWOLD RAY FREDERICK |
| A multipump fluid delivery system that simultaneously provides pump redundancy and the large displacement necessary at low startup speeds. Valve means are provided to cause one or more pumps to recirculate unpressurized fuel during normal operation when the entire flow of the several pumps need not be pressurized to meet system demands. The valve means automatically alternates the loaded pump each successive startup. This alternate loading tends to equalize wear among the several pumps, thereby affording a longer life before fuel system overhaul is required. The valve means also simultaneously serves a pressure relief function.
|
||||||
| 130 | Flow delivery system | US3515164D | 1968-10-16 | US3515164A | 1970-06-02 | DUNNOUS JACK |
| 131 | Double hydraulic pump with built-in unloading valve | US57325166 | 1966-08-18 | US3361068A | 1968-01-02 | WOCHNER JOSEPH J |
| 132 | Fuel delivery systems | US53704866 | 1966-03-24 | US3332234A | 1967-07-25 | LAVASH JOHN P |
| 133 | Slush pump | US85776159 | 1959-12-07 | US3098449A | 1963-07-23 | HILL ROBERT H |
| 134 | Two-stage hydraulic pumps | US82252559 | 1959-06-24 | US3053186A | 1962-09-11 | GONDEK JOHN T |
| 135 | Clothing protector | US78883959 | 1959-01-26 | US3022514A | 1962-02-27 | KAISER WALTER L |
| 136 | Variable capacity pump | US60358156 | 1956-08-13 | US3002461A | 1961-10-03 | EAMES JR WALTER R |
| 137 | Pump, in particular for control systems | US59864256 | 1956-07-18 | US2993445A | 1961-07-25 | FRITZ OSTWALD |
| 138 | Pumping system | US57911756 | 1956-04-18 | US2974600A | 1961-03-14 | RYSTROM CHARLES H |
| 139 | Control valves for two-stage pumps, especially in hydraulic presses | US68324857 | 1957-09-11 | US2957419A | 1960-10-25 | ALBERT MICHEL |
| 140 | Power transmission | US53252255 | 1955-09-06 | US2910944A | 1959-11-03 | PETTIBONE RAYMOND B |
QQ群二维码
意见反馈
意见反馈