序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
181 Pressure-balanced gear pump US73084358 1958-04-25 US2998783A 1961-09-05 LEE JOHN C
182 Lubrication US36382653 1953-06-24 US2865301A 1958-12-23 THOMAS THOMAS R
183 Vane for use in a rotary fluid apparatus US53330455 1955-09-09 US2856861A 1958-10-21 ADAMS CECIL E; ENGLISH JOHN R
184 Fluid pump or motor US57572356 1956-04-03 US2811927A 1957-11-05 JANSEN RICHARD L
185 Pumping apparatus US24743751 1951-09-20 US2749992A 1956-06-12 HILL ROBERT H
186 Gear pump US11710549 1949-09-22 US2659314A 1953-11-17 WOOD WALLACE H
187 Pump US2889148 1948-05-24 US2655108A 1953-10-13 OSBORNE HERBERT C
188 Reversible variable volume pump US64127446 1946-01-15 US2569717A 1951-10-02 HOLL JAMES W F
189 Reversible internal gear pump US66098146 1946-04-10 US2490391A 1949-12-06 WENTLING WILLIAM H
190 Unidirectional flow gear pump US59725245 1945-06-02 US2458678A 1949-01-11 BUNTE GEORGE F
191 Gear pump US22943938 1938-09-12 US2277270A 1942-03-24 SCHMITTER WALTER P; RALPH WIKEN
192 HAUSHALTSGERÄT MIT EINER PUMPENANORDNUNG EP16712028 2016-03-24 EP3286370A1 2018-02-28 EGLMEIER HANS
The invention relates to a domestic appliance (100), comprising a pump assembly (200) for conveying a fluid, wherein the pump assembly (200) comprises: a housing (202), which has an inlet opening (204, 504) and an outlet opening (206); a drive shaft (208); a first gear (210), which is fixedly connected to the drive shaft (208) and can be rotated in a first direction of rotation (220) and a second direction of rotation of the drive shaft (208); and a second gear (212), which can be moved in relation to the first gear (210). In the first direction of rotation (220), the second gear (212) is in engagement with the first gear (210) in order to convey the fluid from the inlet opening (204) to the outlet opening. In the second direction of rotation, a force can be produced, which moves the second gear (212) in order to release the engagement.
193 PORTABLE FUEL PUMP EP14854438 2014-10-17 EP3058226A4 2017-10-04 BERRY JACOB J
194 MINIATURE HIGH PRESSURE PUMP AND ELECTRICAL HYDRAULIC ACTUATION SYSTEM EP14837195 2014-08-19 EP3036437A4 2017-09-20 VACCA ANDREA; ALTARE GABRIELE
Methods and apparatus pertaining to positive displacement pumps, and further to hydraulic actuation systems. In some embodiments the pumps are gear pumps with bi-directional operation. In some embodiments the actuation system includes a motor-driven, reversible operation gear pump providing fluid under pressure to a rod and cylinder.
195 HYDROELECTRIC GEAR PUMP WITH VARYING HELIX ANGLES OF GEAR TEETH EP15844895.1 2015-09-22 EP3198144A1 2017-08-02 SWARTZLANDER, Matthew Gareld
A gear pump for power generation comprises a first rotor and a second rotor in a case. The first rotor comprises a first plurality of radially spaced teeth, wherein the first plurality of radially spaced teeth wrap around the first rotor helically in a clockwise direction, and wherein at a first position the first plurality of radially spaced teeth have a helix angle different than the helix angle of the first plurality of radially spaced teeth at a second position. The second rotor comprises a second plurality of radially spaced teeth, wherein the second plurality of radially spaced teeth wrap around the second rotor helically in a counter-clockwise direction, and wherein at a first position the second plurality of radially spaced teeth have a helix angle different than the helix angle of the second plurality of radially spaced teeth at a second position.
196 HYDRAULIC AUTOMATIC TRANSMISSION BICYCLE EP15838598.9 2015-09-02 EP3190040A1 2017-07-12 Lee, Dong Won

This disclosure generally relates to an automatic bicycle, particularly to a hydraulic automatic transmission bicycle which can automatically and adaptively change gear ratios. More particularly, this disclosure relates to those hydraulic automatic transmission bicycles which use fluid pressure to change such gear ratios, and which include various hydraulic automatic transmissions which may be provided in various configurations and may operate in various methods and sequences to provide automatic and infinitely variable gear ratios.

197 MINIATURE HIGH PRESSURE PUMP AND ELECTRICAL HYDRAULIC ACTUATION SYSTEM EP14837195.8 2014-08-19 EP3036437A1 2016-06-29 VACCA, Andrea; ALTARE, Gabriele
Methods and apparatus pertaining to positive displacement pumps, and further to hydraulic actuation systems. In some embodiments the pumps are gear pumps with bi-directional operation. In some embodiments the actuation system includes a motor-driven, reversible operation gear pump providing fluid under pressure to a rod and cylinder.
198 MOTOR-PUMPEN-EINHEIT EP15158367.1 2015-03-10 EP2921702A2 2015-09-23 Pippes, Reinhard; Ketterer, Dominik

Die Erfindung betrifft eine Motor-Pumpen-Einheit mit einem mehrteiligen Gehäuse (25), die eine reversible Innenzahnradmaschine (21) und einen Elektromotor (22) mit einem Rotor (22.1) und einem Stator (22.2) umfasst, der über eine in dem Gehäuse (25) drehbar gelagerte Welle (23) mit der Innenzahnradmaschine (21) gekoppelt ist. Die Welle (23) erstreckt sich mit einem Wellenende von der Innenzahnradmaschine (21) weg axial durch den von der Welle (23) getragenen Rotor (22.1). Ein erster Anschlusskanal und ein zweiter Anschlusskanal münden in eine Arbeitskammer der Innenzahnradmaschine (21) und sind über in dem Gehäuse (25) angeordnete Rückschlagventile mit einer Leckagekanalschleife verbunden, die mit wenigstens einem mit der Arbeitskammer fluidverbundenen Leckagekanal fluidverbunden ist und die einen sich axial durch die Welle (23) erstreckenden Leckage-Wellenkanal und einen damit fluidverbundenen, sich axial durch den Rotor (22.1) erstreckenden Leckage-Rotorkanal und/oder einen zwischen dem Rotor (22.1) und dem Stator (22.2) ausgebildeten Leckage-Spaltkanal aufweist, der mit dem Leckage-Wellenkanal fluidverbunden ist.

199 VANE PUMPS AND METHODS OF OPERATING SAME EP12808552.9 2012-11-16 EP2920468A1 2015-09-23 KOPP, John
A vane pump (20) including: a housing (21), a first motor (23) arranged to rotate a shaft (22) mounted about the shaft axis, a rotor (24) mounted for rotation with the shaft, and a member (28) having a surface (29) and having a member axis. The member is movable relative to the shaft axis through a permissible range of motion which includes portions on either side of a null position. A vane (32) is movably mounted in each rotor slot, and has a distal end arranged to engage the member surface. The vanes define with the rotor and surface a plurality of chambers (33A-33F). The individual volumes of the chambers vary as a function of the relative position between the rotor and surface. A second motor (31) is operatively arranged to selectively move the member relative to the shaft axis through the permissible range of motion. Movement of the member off-null in one direction along the range of motion will enable fluid flow in a first direction between the ports, while movement of the member off-null in the opposite direction along the range of motion will enable fluid flow in the opposite direction between the ports.
200 Hydraulikpumpenanordnung EP12185270.1 2012-09-20 EP2592273A3 2013-12-18 Mair Am Tinkhof, Günther; Thiel, Manuel

Hydraulikpumpenanordnung 1, welche folgendes umfasst:

eine Hydraulikpumpe 2 mit zwei Stromrichtungen, wobei die Hydraulikpumpe 2 einen ersten Hydraulikanschluss 3 und einen zweiten Hydraulikanschluss 4 aufweist,

einen ersten Zulauf 5 und einen ersten Ablauf 6, die beide mit dem ersten Hydraulikanschluss 3 verbunden sind, und

einen zweiten Zulauf 7 und einen zweiten Ablauf 8, die beide mit dem zweiten Hydraulikanschluss 4 verbunden sind,

wobei in jedem Zulauf 5, 7 und in jedem Ablauf 6, 8 ein Rückschlagventil 9, 10, 11, 12 angeordnet ist

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