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Gear pump

About: Gear pump is a research topic. Over the lifetime, 7490 publications have been published within this topic receiving 38837 citations. The topic is also known as: Gear pump.


Papers
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Patent
24 Feb 2004
TL;DR: In this paper, an off-axis chain and gear are connected to the main oil pump shaft via a single freewheeling clutch, so that either source of torque in a hybrid motor can drive the oil pump or the pump can be driven by the electric motor or the hybrid motor depending on which motor is traveling at a higher speed.
Abstract: An electric motor is connected solidly to the main transmission oil pump shaft on the transmission case. An off-axis chain and gear are connected to the main oil pump shaft via a single freewheeling clutch, so that either source of torque in a hybrid motor can drive the oil pump or the oil pump can be driven by the electric motor or the hybrid motor depending on which motor is traveling at a higher speed.

32 citations

Patent
14 Sep 1977
TL;DR: In this paper, a feeder for apparatus for ejecting a mixture of liquids, consisting of a pair of swash plate proportioning pumps one individual to each of the liquids, e.g. urethane foam, is presented.
Abstract: A feeder for apparatus for ejecting a mixture of liquids, e.g. urethane foam, comprises a pair of swash plate proportioning pumps one individual to each of the liquids, e.g. resin and isocyanate, each proportioning pump being fed by a gear pump from a supply of the respective liquid. Seepage along the drive shafts of the isocyanate pumps is continuously removed by bathing them in a recirculating stream of flushing agent. The swash plate and gear pumps and flushing agent pump are all driven by a single motor from a common chain drive. The liquids are heated during passage through separate hoses to a common dispensing head or gun, by immersed coil electric resistance heaters extending lengthwise freely within the hoses. A novel control system is provided for the hose heater circuit, the adequacy of the liquid supply and other operating conditions.

32 citations

Patent
04 Feb 2005
TL;DR: An aircraft gas turbine engine including a first hydraulic pump connected to a starter motor and a second hydraulic pump connecting to the high-pressure compressor is described in this paper, where the engine is arranged such that during starting the starter motor drives the first pump, to pump hydraulic fluid to operate the second pump as a motor to drive the high pressure compressor.
Abstract: An aircraft gas turbine engine including a first hydraulic pump connected to a starter motor and a second hydraulic pump connected to the high-pressure compressor The engine being arranged such that during starting the starter motor drives the first pump, to pump hydraulic fluid to operate the second pump as a motor to drive the high pressure compressor During running the first and second pumps are connected to the aircraft hydraulic system

32 citations

Patent
28 Oct 1942
TL;DR: In this paper, it is known that a pump of the spur gear type may be operated as a variable displacenent pump by providing means for shifting one of the working gears along its axis of rotation.
Abstract: This invention relates to pumps and particularly to a rotary pump of the variable displacement type. It is known in the art that a pump of the spur gear type may be operated as a variable displacenent pump by providing means for shifting one of the working gears along its axis of rotation...

32 citations

Patent
08 Dec 1989
TL;DR: In this paper, a polymer metl delivery system includes a preheated hopper, a high clearance auger, a gear pump, and provisions for delivering heat to the polymer.
Abstract: A polymer metl delivery system includes a preheated hopper, a high clearance auger, a gear pump, and provisions for delivering heat to the polymer. The resin is melted and fed to the auger and pumped to the gear pump and further pump to an extrusion die. Heat is added to the polymers from the hopper and throughout its course to the outlet connection for the extrusion die. The preheated in the hopper includes heat conductive fins. The system is particularly suited for use in combination with a meltblowing die.

32 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202320
202251
202154
2020137
2019198
2018276