| 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 | Portable hydraulic pump unit | US10297798 | 2001-05-26 | US06942468B2 | 2005-09-13 | Carsten Sauerbier; Uwe Kirchner; Heinz Heller |
| The invention relates to a portable hydraulic pump unit (1) comprising a housing (2), a pump (5), a drive motor (6) for the pump (5), in particular in the form of an electric drive motor, in addition to a reservoir (13) for hydraulic fluid. According to the invention, the housing (2) is tubular and (when viewed in cross-section) point symmetrical, e.g. cylindrical, square, triangular or polygonal. The advantage of the hydraulic pump unit is that is can be positioned and transported in the receptacles of conventional portable tank carriers, in particular for the tanks of protective breathing apparatus. | ||||||
| 122 | Fluid control device | US349246 | 1999-07-08 | US6116283A | 2000-09-12 | Michio Yamaji; Toshiro Nariai; Hiroshi Morokoshi |
| A fluid control device comprises a massflow controller having an inlet channel and an outlet channel, an inlet-side lower block coupling having a channel upwardly opened and communicating with the inlet channel of the massflow controller, an inlet-side connecting member adjacent to the inlet-side lower block coupling and having a channel opened upward, an inlet-side upper block coupling having an inverted V-shaped channel for holding the channel of the inlet-side lower block coupling in communication with the channel of the inlet-side connecting member, an outlet-side lower block coupling having a channel upwardly opened and communicating with the outlet channel of the massflow controller, an outlet-side connecting member adjacent to the outlet-side lower block coupling and having a channel opened upward, and an outlet-side upper block coupling having an inverted V-shaped channel for holding the channel of the outlet-side lower block coupling in communication with the channel of the outlet-side connecting member. | ||||||
| 123 | Hydraulic drives system for a press | US809915 | 1997-07-07 | US5852933A | 1998-12-29 | Stefan Schmidt |
| The invention relates to a drive system for a hydraulic press. The drive system is of the type of secondary controlled system maintaining an impressed pressure of substantially constant magnitude in a pressure system. A hydraulic transformer comprises a pair of mechanically coupled hydrostatic machines each having a variably capacity. The first machine is connected to the pressure system and the second machine to the press cylinder. The invention provides a drive system in which biasing the press cylinder, rapid tranverse and pressing stroke, decompressing the fluid and flushing of hot fluid is accomplished in a closed loop free of throttling losses. The hydraulic transformer further allows to recover energy to the pressure system. | ||||||
| 124 | Attenuation of fluid borne noise | US360858 | 1994-12-21 | US5560205A | 1996-10-01 | Robert J. Huebner |
| In many hydraulic systems, fluid borne noise is generated during operation due to the effects of the hydraulic pump. This fluid borne noise is many times transmitted to the hydraulic valves, hydraulic lines, and other structures that valves and lines are mounted on. The structure then emits vibrations that create the largest portion of the system air borne noise. In the subject invention, an apparatus is provided for the attenuation of fluid borne noise in a hydraulic system. The apparatus includes a fluid vessel having a volumetric space of a predetermined size located in the system generally adjacent a pump and a flow restrictor located in the system downstream of the fluid vessel. In the subject arrangement, the flow restrictor may be adjustable in response to various system parameters so that the fluid borne noise is effectively controlled over wide ranges of system pressures, pump drive speeds, and pump displacements. By reducing the fluid borne noise in the hydraulic system, the associated air borne noise that is created by various components that are associated with the hydraulic system is further attenuated. | ||||||
| 125 | Non-stage transmission control system | US115119 | 1993-09-02 | US5461563A | 1995-10-24 | Munehiko Mimura |
| In a non-stage transmission control system, the output current instruction signal of a microcomputer is provided as a pulse-width-modulated signal, with a result that the number of signal lines from the microcomputer is reduced. Furthermore, the current feedback signal of a solenoid is applied to the microcomputer, for detection of abnormal conditions, and a quick break resistor is connected in series to a feedback diode to increase the current reduction rate of the solenoid. | ||||||
| 126 | Fluid power regenerator | US782162 | 1991-10-24 | US5251442A | 1993-10-12 | Richard M. Roche |
| A regenerator for a fluid power system is arranged to control flow rates while converting pressure drops accompanying resulting changes in flow rates into useful work. A gang of displacers are incorporated into a fluid flow network that also includes an array of selectable flow paths through the displacers. A control system, responsive to changes in demand for the flow of fluid, selects among the flow paths to operate the displacers in various combinations as motors, pumps, and recirculators for dividing the flow of fluid into two variably sized portions. One portion of the flow is sized to match the demand for fluid flow, and the other portion of the flow is converted into useful work. | ||||||
| 127 | Valve subplate for alternative double-acting or single-acting operation of cylinder | US264359 | 1988-10-31 | US4947733A | 1990-08-14 | Jean-Pierre Ramillon |
| A valve with four passages controls a piston (15) disposed in a cylinder (16). Between the body (1) of the valve and the cylinder (16) is disposed a plate (23) having passages (24, 25) which are used and a passage (26) which is not used in FIG. 1. By turning plate (23) 180.degree., the passage (24) is located in the non-use position, while the passage (26) connects the conduits (19 and 13) in such a way as to cause the space (21) of the cylinder (16) to communicate continuously with an exhaust orifice (6). | ||||||
| 128 | Bidirectional pressure supply system in a motor vehicle | US251664 | 1988-09-30 | US4939899A | 1990-07-10 | Horst Holzhauer; Wolfgang Schneider; Gunther Weikert; Rudi Kneib; Josef Schumacher |
| A bidirectional pressure supply system for consumers of pneumatic negative pressure and/or positive pressure has a negative pressure line system and a positive pressure line system, to which the respective pressure types are simultaneously admitted from a pressure generator. Upon the electrically triggerable operation of the generator the consumers are connected, via parallel connected directional valves assigned to the consumers, to the respective pressure line system depending on the pressure type required at that moment, individually or in groups. The system provides an arrangement to apply negative pressure to first consumers and, simultaneously, positive pressure to second consumers. | ||||||
| 129 | Device in hydraulically driven machines | US662407 | 1984-10-03 | US4707988A | 1987-11-24 | Goran Palmers |
| A device in machines (1) which are driven by means of a hydraulic cylinder, such as hydraulic presses and the like, and which has at least one pump (5) for the hydraulic fluid which pump is driven by a driving machine (6) through an energy accumulator, for example a flywheel (7). The object of the invention is to provide a considerable energy saving and recovery of energy. This has been achieved by at least one driving unit (5) connectable to the hydraulic system in the machine, said driving unit being arranged to bring back the elastically stored energy in the machine to the energy accumulator (7) during the decompression phase of the machine. | ||||||
| 130 | Prefilled hydraulic control apparatus for motor vehicle | US555667 | 1983-11-28 | US4624290A | 1986-11-25 | David J. Compton; Richard A. Nix; Keith V. Leigh-Monstevens |
| A hydraulic control apparatus, more particularly for operating a motor vehicle clutch release mechanism, comprising a master cylinder, a slave cylinder and a conduit connecting the master cylinder to the slave cylinder. A leakproof quick-connect connector is placed between the master cylinder and the slave cylinder, preferably at the end of the conduit where it connects to the master cylinder or the slave cylinder, one member of the connector forming part of the master cylinder or slave cylinder. The apparatus, after assembly, is filled with hydraulic fluid, the two members of the connector being held momentarily engaged. After filling, the connector is broken, and the filled components are shipped to a user. After installation of the apparatus for operation of a mechanism such as a clutch release mechanism, the two connector members are reconnected, and the connector members having been provided with a one-way locking member can no longer be separated such as to preserve the integrity of the system. | ||||||
| 131 | Installation for the supply of several similar elements with a medium under atmospheric excess pressure | US435957 | 1982-10-22 | US4552402A | 1985-11-12 | Guntram Huber; Hermann Moller; Eberhard Faust; Rudolf Andres; Wolfram Qullmalz |
| An installation for the actuation of several controllable elements with modulated pressures, whereby the elements are constructed in particular as air chambers accommodated in the upholstery of a motor vehicle seat; the installation consists of only one pressure modulator and of a distribution device series-connected therewith; the pressure modulator is adapted to be selectively connected with one or several of the controllable elements by way of this distribution device. | ||||||
| 132 | Copper-alloy tube water supply | US24179 | 1979-03-26 | US4337793A | 1982-07-06 | Shiro Sato; Kiyoji Sagisaka |
| Tubes for water and/or hot-water supply use, which are made of Cu-base-alloys essentially containing Mg from 0.05 to 2.8 wt % and the balance Cu and inevitable impurities, have been found to have conspicuously low dissolution rates of undesirable ions, especially Cu ions and other ions, even in stagnant water and/or at elevated temperature. The alloys are desirably further contain up to 1.0% Ca to further restrain dissolution of Cu ions. | ||||||
| 133 | Process and plant equipment for the short-term propulsion of one or several turbines coupled to an air and/or nitrous gas compressor in a plant for the production of nitric acid | US108233 | 1979-12-28 | US4305919A | 1981-12-15 | Gunter Roller |
| A process and a plant are disclosed whereby nitric acid is produced by the catalytic combustion of ammonia with air to form nitrous gases which are contacted with water in an absorption zone to form nitric acid. Gas flow into and through the plant is maintained by a compressor system powered by turbines that are propelled by the heat energy released during ammonia combustion. In accordance with the present invention, a portion of the ammonia combustion heat energy is stored using heat accumulating means positioned at various possible locations throughout the system. Such stored heat provides a thermal energy reserve available to power the compressor turbines for a short period of time in the event that ammonia combustion is discontinued. | ||||||
| 134 | Hydraulic systems | US871448 | 1978-01-23 | US4173866A | 1979-11-13 | Glyn P. R. Farr |
| In an hydraulic system in which an hydraulic accumulator is charged with hydraulic fluid under pressure by means of an hydraulic pump which draws hydraulic fluid from a tank, and an unloader valve disposed in a supply line between the pump and the accumulator is operative to prevent the accumulator from being overcharged and to allow the pump to re-charge the accumulator should the pressure stored therein fall below a desired minimum value, the unloader valve incorporates a control valve, and a pressure responsive slave which is operated by fluid pressure under the control of the control valve. The control valve comprises a valve member which is movable between a first position in which the accumulator is isolated from the slave so that pump pressure is supplied to the accumulator, and a second position in which fluid pressure from the accumulator can act on the slave to render the slave operative to reduce the pump pressure or disable the pump, and a cut-out spring for biassing the valve member at all times towards the first position. The valve member has different effective areas of which a smaller area is subjected to a control pressure dependent upon the pressure in the accumulator and in response to which the valve member can move at a cut-out point from the first position into the second position, and a greater area is subjected to the pressure in the accumulator, at least when the control member is in the second position, to determine a cut-in point at an accumulator pressure less than the pressure in the accumulator at the cut-out point and at which the control member can move from the second position into the first position. | ||||||
| 135 | Domestic water pressure-flow powered generator system | US843072 | 1977-10-17 | US4142367A | 1979-03-06 | Vito Guisti |
| A fluid motor including a rotatable output shaft and a fluid inlet and a fluid outlet is provided for serial connection in a domestic water system supply pipe. A rotary electrical generator is also provided and the output shaft of the fluid motor is drivingly coupled to the generator. A bank of storage batteries is further provided and the generator includes a pair of electrical potential output conductors electrically connected to the bank of batteries through current regulating structure whereby the batteries may be recharged as a result of the fluid motor driving the generator. An auxiliary domestic electrical wiring system is provided and is electrically connected to the bank of storage batteries. | ||||||
| 136 | Well head gas counter balanced and operated actuator for oil well pumps | US631102 | 1975-11-12 | US3986355A | 1976-10-19 | Joseph H. Klaeger |
| A pumping device secured to a well head adapted to be counter balanced and operated by well head gas pressure. The pumping cylinder and the counter balance cylinder are positioned on a prolonged axis and employ a common polished piston rod operably mounted on the axis of the cylinders. The counter balance piston is pressurized through a volume tank receiving gas through a pressure regulator from the well head. The pumping piston is powered up and down by direct pressure from the well head gas. The flow of gas to and from the pumping cylinder is controlled by a floating piston five-way valve admitting directly well head gas to drive the piston and exhausting the gas to the gas flow delivery line. Snifter valves control the floating piston five-way valve and pressure regulators positioned between the well head and the gas flow delivery line maintain operable differential pressure in the system. | ||||||
| 137 | Closed loop booster system pneumatic actuator for oil wells | US497695 | 1974-08-15 | US3932990A | 1976-01-20 | Joseph H. Klaeger |
| An improved closed loop pneumatic system for driving a piston in a cylinder which employs a low pressure tank for receiving exhaust gases, a booster compressor transferring the gases to a high pressure tank which drives the piston on the up stroke. The constant interconnecting of a low pressure tank through a piston pressure equalizing the line improves the efficiency of the actuator. The larger, deep-well system utilizes an improved means for recovering and recirculating lubricating oil within the closed loop. Two species of the invention are described in this application. One primarily designed for deep wells and one designed primarily for shallow wells. | ||||||
| 138 | Method and apparatus for converting heat energy to mechanical energy | US41517573 | 1973-11-12 | US3861148A | 1975-01-21 | BAILEY LEO; KIMMEL DAVID R |
| An engine and method for converting heat energy into mechanical energy in a continuous process utilizing two fluids, one having a high boiling point and one having a lower boiling point. The high boiling point fluid is heated initially and then the lower boiling point fluid is injected into the high boiling point fluid so that it immediately vaporizes, but without ignition. The expansion in volume of the low boiling point fluid results in a pressure against the high boiling point fluid which is in turn forced against an impeller causing rotation of the power output shaft. The low boiling point fluid is then removed from the high boiling point fluid and channeled into a chamber adjacent the high boiling point fluid so as to be disposed in a heat exchange relation thereto. The low boiling point fluid is then ignited and the resultant energy transferred to the high boiling point fluid. The ignited gases are then exhausted.
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| 139 | Fluid feed systems | US34003773 | 1973-03-12 | US3847172A | 1974-11-12 | GUY K |
| The invention relates to a fluid feed system for supplying a fluid consumption unit from at least two fluid pressure sources and comprising branch conduits for connection to said fluid pressure sources respectively and a main conduit to which said branch conduits are connected at their downstream ends the main conduit being connected to said fluid consumption unit. A flow regulating valve in each branch conduit, each flow regulating valve including a flow control element operable by a piston or the like to which can be applied a pressure variable to control the setting of the flow control element, and means for varying the pressures acting on the pistons or the like to maintain substantially equal flow rates in said branch conduits.
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| 140 | Control apparatus | US13102126 | 1926-08-23 | US1795896A | 1931-03-10 | SCHENCK SAMUEL B |
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