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| Number | Title | Issue Date |
| 8092192 | Wind-power water supply pump A wind-power water supply pump includes a housing, a rotary disk, a vane wheel, a direction control vane, a linkage, and a plurality of expandable tubes, wherein the rotary disk is rotatably mounted to a top of the housing and the vane wheel and the direction contro... | 01/10/2012 |
| 7233092 | Permanent magnet synchronous motor The present invention provides a permanent-magnet-synchronous-motor having a stator with concentrated windings with the following structure so that permanent magnet (6) is hard to subjected to demagnetization magnetic field: 0.3 Lg | 06/19/2007 |
| 6370875 | Air powered hydraulic jack with load sensing auto shut-off air control The invention provides an improved fluid motor powered lift system having a valve arrangement for reducing or interrupting the fluid flow supplied to the motor when the pressure in the lift system exceeds a predetermined pressure. A valve arrangement is p... | 04/16/2002 |
| 6364636 | Structure of a miniature pumping machinery A miniature diaphragm pump includes a motor unit, a compression portion, and an air collection portion. The output air is injected into the inner space of the pump through the air inlet formed at the motor unit, and the air exits from the pump through an ... | 04/02/2002 |
| 6241463 | Method for determining the operating level of a fan and fan Fore many applications it is desirable to determine the operating level, i.e. the current flow rate V and the total pressure difference Ɗpt of a fan in the installed state without external measuring points and calibration. The invention should... | 06/05/2001 |
| 6168387 | Reciprocating pump with linear displacement sensor A reciprocating pump having an active feedback system is provided. The reciprocating pump includes a reciprocating pump having a pump chamber with a rod reciprocally movable along a longitudinal axis of the pump chamber, with the rod including a ferromagn... | 01/02/2001 |
| 6045332 | Control system for multi-pump operation A control system, particularly adaptable to multiple-pump operations in process units, is disclosed. A measured variable, such as pressure, is sensed by a master controller. The master controller, in turn, sends a signal to the driver of the individual pu... | 04/04/2000 |
| 5775101 | Refueling device with feedback-controlled auxiliary drive A refueling cart, for refueling large aircraft at a major airport having pressurized fuel hydrants at loading/unloading aprons, includes auxiliary facilities on the refueling cart that are usually powered by compressed air that is obtained from compressed... | 07/07/1998 |
| 5242271 | Rotary power fill device A device for dispensing oils, antifreeze and other fluids from drums or other bulk containers has a rotary air motor which powers a gerotor-type pumping element. The pumping element has at least one magnet thereon and an electronics package is provided wh... | 09/07/1993 |
| 4992027 | Hydraulic control valve for fuel pumping system A low pressure drop valve connectible to a source of pressurized hydraulic fluid for modulating hydraulic fluid flow is provided; it includes a valve body defining an axially extending tapered bore and having hydraulic flow inlet and outlet ports, a plug ... | 02/12/1991 |
| 4797067 | Pumping system with desilting arrangement Pumping system with a desilting arrangement having a bidirectional water pump disposed in a housing which has a pump inlet and a pump outlet. The system also has a silt blow-out pipe with a desilting valve therein, connected at one end to the pump outlet ... | 01/10/1989 |
| 4599044 | Electronic feedback area control system for TVC gas generator In a thrust vector control system of the type in which a solid-propellant s generator powers a turbine-driven pump for driving hydraulic actuators for controlling the direction of thrust, the improvement being a feed back control system in which a variabl... | 07/08/1986 |
| 4591314 | Hydraulic power supply system utilizing a solid propellant gas generator A hydraulic power supply system utilizing a turbine-driven pump in a hydraulic circuit and a solid propellant gas generator providing gas for driving the turbine. A gas pressure relief valve is operable to maintain the gas generator at constant pressure a... | 05/27/1986 |
| 4571945 | Turbocharger control device with optical turbocharger shaft speed sensing A turbocharger control device for use in conjunction with an internal combustion engine includes a turbine driven by exhaust gases; a compressor connected with the turbine by having a shaft having a hole through the diameter; a photo projector and photo r... | 02/25/1986 |
| 4529359 | Sewerage pumping means for lift station Sewerage pumping apparatus is provided for delivering sewerage collected by gravity in a wet well to a force main which supplies sewerage by force to a remotely located sewerage treatment plant. The sewerage pumping apparatus comprises a hydraulically dri... | 07/16/1985 |
| 4426845 | Noise reduction in pneumatically drive hydraulic pump Disclosed is a method and apparatus for reducing the level of noise emitted by air turbine machinery, particularly a pneumatically driven hydraulic pump for an airplane, wherein a modulating valve meters the flow of air from a source of pressurized air th... | 01/24/1984 |
| 4356695 | By-pass valve apparatus of an exhaust turbocharger for an internal combustion engine A by-pass valve apparatus for an exhaust turbocharger for an internal combustion engine is disclosed; the by-pass valve opening is controlled by the total pressure of air flow at the impleller outlet of a compressor of the turbocharger, in place of using ... | 11/02/1982 |
| 4281970 | Turbo-expander control In a process in which a turbo-expander is utilized to drive a compressor, the pressure of the gas flowing to the turbo-expander is maintained at a desired level by manipulating the speed of the turbo-expander. If the turbo-expander should tend to overspee... | 08/04/1981 |
| 4218191 | Multi-constraint control of a compression system A compression system is controlled so as to maintain the actual suction pressure as close as possible to a desired suction pressure without exceeding the operational limitations of the compression system. The speed of the compression system is manipulated... | 08/19/1980 |
| 4143996 | Hydraulic control system and method A hydraulic control system incorporating a variable displacement, pressure compensated hydraulic pump and means for varying the speed of the input shaft driving the variable displacement pump in proportion to the displacement of the pump.... | 03/13/1979 |
| 4142838 | Method and apparatus for preventing surge in a dynamic compressor A control apparatus for antisurge protection of a dynamic compressor including a junction of a closed antisurge loop with a surge limit computing module and a two mode controller with a relay backup system with deviation alarms is characterized in operati... | 03/06/1979 |
| 4138202 | Hydraulic motor system for driving a submersible impeller pump in which reversal of hydraulic flow is prevented The present hydraulic system for driving a submersible pumping unit has an above-ground pump for pumping oil through a hydraulic motor in the submersible pumping unit, and a check valve between the above-ground pump and that hydraulic motor to prevent the... | 02/06/1979 |
| 4102604 | Method and apparatus for noninteracting control of a dynamic compressor having rotating vanes A control system is disclosed for a noninteracting control and protection of a dynamic compressor having rotating vanes. The method consists of a junction of a few control circuits for controlling the performance of a dynamic compressor, for protecting compres... | 07/25/1978 |
| 4046490 | Method and apparatus for antisurge protection of a dynamic compressor A method and apparatus for protecting a dynamic compressor from surge. The method includes a first step for providing a simultaneous control of a smaller relief means and a main control member of a dynamic compressor or the driver thereof for changing the... | 09/06/1977 |
| 3994623 | Method and apparatus for controlling a dynamic compressor A method is disclosed for a cascade control of a dynamic compressor to maintain a constant mass flow rate to a process. The method consists of a successive junction of control loops for controlling the speed of rotation, the pressure in the delivery, and ... | 11/30/1976 |
| 3945762 | Hydraulic guide-wheel adjusting mechanism A hydraulic guide wheel blade adjusting mechanism for the turbine and/or the compressor of an exhaust-gas turbo-supercharger of an internal combustion engine, which includes a control slide valve and servo-pistons; the adjusting mechanism is thereby accom... | 03/23/1976 |
| 3930743 | Fluidic governor system A fluidic governor system for controlling the speed of a drive shaft output of a prime mover, comprising a fluidic governor, a reciprocating or vane compressor, a fluidic RC filter, and a valve. The compressor is mechanically coupled to and driven by the ... | 01/06/1976 |
