Having Heating Or Cooling Means Patents (Class 60/337)
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Patent number: 4350011Abstract: The disclosure concerns a pumping apparatus for working fluid, in a hydrodynamic coupling, or the like. Working fluid is stored in a sump and is to be lifted by a spinning disc to an elevated container from which the working fluid is then directed back into the spinning disc. The periphery of the spinning disc picks up the working fluid from the sump and carries it around to spary it up toward a deflector at the top of the housing which deflects the fluid into the container. A groove-like duct encloses the lower quarter of the disc for directing the fluid back toward the surface of the disc. The disc has a trapezoidal cross-section peripheral groove for further carrying the fluid beyond the top exit of the duct so that the fluid may be thrown toward the deflector at the top of the housing.Type: GrantFiled: April 29, 1980Date of Patent: September 21, 1982Assignee: Voith Turbo GmbH & Co. KGInventors: Thomas Rogner, Anton Frank
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Arrangement to cool oil in hydraulic control system of automatic transmission for industrial vehicle
Patent number: 4238929Abstract: The present invention relates to an arrangement to cool oil used in a hydraulic control system of an automatic transmission for an industrial vehicle. The hydraulic control system includes an operating pressure feed line, a pressure regulator valve to regulate the magnitude of pressure in the operating pressure feed line, feed passage means for feeding oil under pressure from the operating pressure feed line to a hydrokinetic torque converter, exhaust passage means for exhausting the oil from the torque converter, a pressure maintaining valve disposed in the exhaust passage means to maintain the magnitude of pressure within the torque converter to a predetermined level, and a lubricating oil feed line communicating with the exhaust passage means via the pressure maintaining valve and also with a lubricating oil port of the pressure regulator valve via a flow restrictor. The lubricating oil feed lines have two portions which may be subjected to cooling.Type: GrantFiled: June 26, 1979Date of Patent: December 16, 1980Assignee: Nissan Motor Company, LimitedInventor: Kazuyoshi Fujioka -
Patent number: 4209985Abstract: A transmission control system (10) for a transmission including a torque converter (66) has fluid inlet and fluid outlet passages (64,80) connected to the torque converter (66), a pressure regulating valve (20) for relieving fluid from a pressure source (12,16) to the inlet passage (64) of the torque converter (66), and a flow limiting passage (96) directly connecting the inlet and outlet passages (64,80) for continually bypassing fluid past the torque converter (66) and controlling the pressure drop thereacross.Type: GrantFiled: December 11, 1978Date of Patent: July 1, 1980Assignee: Caterpillar Tractor Co.Inventor: Ralph E. Master
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Patent number: 4208171Abstract: A fluid pumping system includes a pump driven at a variable speed by a motor connected to the pump by a fluid cooled transducer. A regulator, connected to the transducer, controls, the speed of the pump responsive to an analog signal related in value to the flow rate of the pump and responsive to a control signal provided by a pump cycle controller. The pump cycle controller senses the level of a basin of fluid to be pumped and provides the control signal. The control signal is operative to start the pump when the fluid level reaches a predetermined starting level, to vary the pump speed responsive to changes in fluid levels higher than the starting level, and to run the pump at a minimum speed when the fluid level is between the starting level and a predetermined stopping level, lower than the starting level.Type: GrantFiled: April 6, 1977Date of Patent: June 17, 1980Assignee: Pumpex Production ABInventor: Arne F. Jonsson
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Patent number: 4201050Abstract: A rotating fluid coupling of the type which has a primary coupling half and a secondary coupling half which together form a working chamber which is filled with working fluid. A control device which is arranged on the secondary coupling half is used to regulate the rotary take-off drive speed of the coupling by comparing an operating value, such as the centrifugal force which is a result of the rotating drive speed, with a variable command value and when the operating value differs from the command value initiates adjustment of the rotary drive speed. A fluid container on the secondary coupling half revolves with the secondary coupling half. A stationary supply line for control fluid to the fluid container is provided with a permanent outlet opening at a distance from the axis of rotation of the fluid coupling.Type: GrantFiled: December 18, 1978Date of Patent: May 6, 1980Assignee: Voith Turbo GmbH & Co., KGInventor: Fritz Nixel
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Patent number: 4198819Abstract: A power transmission including a motor, a "fixed-fill" fluid coupling and a gear box, at least the "fixed-fill" fluid coupling of which is liquid cooled.Type: GrantFiled: June 13, 1978Date of Patent: April 22, 1980Assignee: Dowty Meco LimitedInventor: Nigel G. Bourne
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Patent number: 4188785Abstract: Disclosed is a fluid coupling which includes: a housing being used as a rotary driving member; a rotor rotatably mounted in the housing and being used as a driven member, a fluid pump having a pump chamber defined between the housing and the rotor; a fluid inlet port and a fluid outlet port; and a fluid circulation passage between the chamber and the housing, such that fluid in the pump circulates from the fluid circulation passage into the pump chamber through the inlet port and from the pump chamber through the outlet port into the fluid passage.Type: GrantFiled: April 4, 1978Date of Patent: February 19, 1980Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Masahisa Ando, Keigo Kato, Masami Yamazaki, Tetsuro Akagi
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Patent number: 4175647Abstract: A hydrodynamic retarder for vehicles, especially for motor vehicles, with an internal working circulation within a working space having at least one rotating blade wheel and at least one stationary blade wheel, with an external cooling circulation that can be filled by way of a filling and discharge line out of a pressure-medium-actuated filling cylinder and which includes a by-pass or control valve, and with a lubricating line which connects the sealing spaces of the retarder shaft both with the center of the working space as also with a control member of the control valve and with a reservoir tank that is arranged at a higher level than the retarder and is additionally connected with the filling and discharge line by way of a closure valve.Type: GrantFiled: March 13, 1978Date of Patent: November 27, 1979Assignee: Daimler-Benz AktiengesellschaftInventor: Hans Hanke
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Patent number: 4175388Abstract: The drawings illustrate a cooling system for use with a torque converter assembly and a radiator containing a coolant. The cooling system includes a plurality of circumferentially spaced cooling fan blades formed on the outer surface of the torque converter housing for rotation therewith, and opening means cooperating therewith. A shroud having speed responsive diverter means associated therewith is operatively connected at one end thereof to the opening means and mounted at the other end thereof adjacent a face of the radiator for cooling the coolant therein by communicating air toward or away from the radiator depending upon whether the fan blades are used as a blower or a suction device in particular vehicular applications.Type: GrantFiled: March 17, 1978Date of Patent: November 27, 1979Assignee: General Motors CorporationInventors: Herman C. Milbreath, Alverson B. Williams
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Patent number: 4114734Abstract: A continuous brake (retarder) for vehicles, especially for heavy trucks or the like, which utilizes a hydrodynamic circulatory system in the form of a driven hydrodynamic coupling whose operating fluid is conducted into an external circulatory system by way of a cooler or radiator; a separate cooler is coordinated to the hydrodynamic coupling which serves at the same time as feed pump for the operating fluid; additionally, the hydrodynamic coupling is operatively connected with a turbine in the external circulatory system which serves for the drive of a separate fan coordinated to the separate cooler.Type: GrantFiled: January 24, 1973Date of Patent: September 19, 1978Assignee: Daimler-Benz AktiengesellschaftInventor: Friedrich Bultmann
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Patent number: 4096693Abstract: In a power transmission system, a bearing is provided for carrying an output shaft of the torque converter unit. The bearing is lubricated by torque converter fluid delivered thereto through a lubrication circuit. The lubrication circuit includes a flow restriction ring and a drain passage of a relatively large size whereby the life of a fluid seal arranged in the lubrication circuit is remarkably prolonged.Type: GrantFiled: April 12, 1977Date of Patent: June 27, 1978Assignee: Nissan Motor Company, LimitedInventor: Tamio Kawamoto
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Patent number: 4069906Abstract: Cooling apparatus is disclosed for drives of the type having a housing containing a sump for a fluid which is heated by the generation of heat energy during operation of the drive. The heat energy is generated by relatively moving torque transmitting members, such as clutch and brake units, connected between the drive input and output shafts. A centrifugal pump located within the housing below the level of the fluid is driven by the input shaft and circulates fluid to a heat exchanger disposed about the outside surface of the housing. The cooled fluid is returned to the fluid sump and a brake reservoir which assures an ample supply of fluid to the brake at a relatively low pressure. A fan carried by the input shaft blows ambient air over the heat exchanger and exterior surface of the housing to enhance the level of heat dissipation.Type: GrantFiled: January 27, 1977Date of Patent: January 24, 1978Inventor: Kenneth E. Handke
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Patent number: 4058980Abstract: A heat exchanger especially adapted for use in combination with a transmission such as a hydraulic torque converter. A plurality of generally flat cooling cells are stacked upon each other, each cell including a pair of plates sealed together about their outer periphery and forming therebetween a fluid flow space. Each cell includes a separate inlet opening and outlet opening passing completely therethrough in a direction perpendicular to the direction of stacking. In the stack, all of the inlet holes communicate with each other to form the inlet while all of the outlet holes communicate with each other to form the outlet. A sealing device encircles each opening in each space between the cells. The sealing means can include a pair of concentric rings between which an opening can be provided through the cells without communicating with the interior thereof, for draining leaking fluid to atmosphere.Type: GrantFiled: July 16, 1976Date of Patent: November 22, 1977Assignee: S.R.M. Hydromekanik AktiebolagInventor: Karl Gustav Ahlen
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Patent number: 3999385Abstract: A hydrodynamic coupling for driving pumps, fans, and the like at variable shaft speeds includes coaxial primary and secondary impellers. The space defined within these impellers contains variable quantities of working fluid for transmitting the shaft torque from one impeller to the other. One of the impellers is equipped with a co-rotating casing, which encloses the other impeller and may serve to force working fluid into the working chamber. The fluid exits from the working chamber through an aperture in the higher-lying impeller and returns to a storage chamber from which a conduit transports it to the casing. A control valve in the conduit permits external flow control.Type: GrantFiled: January 5, 1976Date of Patent: December 28, 1976Assignee: Voith Turbo KGInventors: Heinz Hoeller, Klaus Nolz, Thomas Roegner
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Patent number: 3958671Abstract: A hydrodynamic brake system for the wheel of a vehicle, particularly for the non-driven wheel of a trailer, forms an integral unit which is installed within the confines of the wheel rim at one side of the hub. The stator of the brake system is mounted on the non-rotating axle for the wheel, and the rotor of the brake system is connected with a reservoir for a supply of hydraulic brake fluid and is rotated by the hub and/or rim. The reservoir is connected by discrete feeding and evacuating conduits with a toroidal working chamber which is defined by the stator and rotor, and a portion of the reservoir is exposed to the surrounding atmosphere so as to promote the cooling of brake fluid therein.Type: GrantFiled: December 5, 1974Date of Patent: May 25, 1976Assignee: Voith Getriebe KGInventor: Helmut Muller
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Patent number: 3953970Abstract: An angle drive transmission having an angle drive input shaft and driving bevel gear driving a driven bevel gear on an input sleeve shaft supported on each side of the driven bevel gear by bearings in an end wall and a central wall of the main housing. The sleeve shaft drives a pump mounted on the end wall and extends through the end wall to drive and support the clutch wall of an outboard mounted rotary torque converter housing. An outboard cover housing has its open end secured to the main housing at the end wall, encloses the rotary housing and has a central ground member rotatably supporting the impeller wall of the rotary housing. The torque converter has a bladed impeller on the impeller wall, a bladed turbine adjacent the clutch wall connected to an output shaft rotatably mounted in the sleeve shaft and a bladed stator between the impeller and turbine mounted on the ground member. A lockup clutch between the clutch wall and turbine in lockup connects the rotary housing to drive the output shaft.Type: GrantFiled: February 21, 1975Date of Patent: May 4, 1976Assignee: General Motors CorporationInventors: Reece R. Fuehrer, James F. Hartz
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Patent number: 3951242Abstract: A non-exhaustable permanent brake for a vehicle motor, which includes a fluid operable braking unit arranged in the housing of the vehicle motor and comprising a pump wheel which is drivingly connected to the crankshaft of the motor and is interposed in a liquid lubricant circulating circuit. This pump wheel has associated therewith a follower which normally is freely and under no load rotated by the liquid lubricant circulated by the pump wheel but can be arrested by a friction brake to brake the pump wheel and thereby the motor.Type: GrantFiled: November 21, 1974Date of Patent: April 20, 1976Assignee: Maschinenfabrik Augsburg-Nurnberg AGInventors: Hans Fischer, Julius Liebel
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Patent number: 3942613Abstract: A hydrodynamic brake for vehicles, particularly for motor vehicles which includes at least one stationary blade wheel and at least one rotating blade wheel whose blades have any desired blade angle and have an external circulation for the working liquid provided possibly with a cooler; the working liquid leaves the working circulation substantially tangentially at least at the discharge and under utilization of the dynamic pressure by way of one or several discharge apertures provided in the stationary blade wheel which extend parallel to the blade angle; the discharge apertures are each provided with an outer boundary starting from the largest circumference of the stationary blade wheel or in direct proximity thereto and discharging into a possibly annularly shaped discharge channel arranged axially adjacent the working circulation.Type: GrantFiled: August 7, 1970Date of Patent: March 9, 1976Assignee: Daimler-Benz AktiengesellschaftInventor: Eberhardt K. Frotschner