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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7716925 | Closure with a thermal safeguard function The invention relates to a closure with a thermal safeguard function, comprising a closure body (1), which is used to seal a cavity (10) that is to be closed; a fusible safeguard element (2), which is inserted into the closure body and which kee... | 05/18/2010 |
| 7584608 | Hydrodynamic clutch A hydrodynamic clutch having a pump and turbine and a case wherein a collection bath is provided underneath the case for the collection of work medium being discharged from the case vent openings and in which the case is immersed. There is in the collection bath at ... | 09/08/2009 |
| 7526916 | Drive train A drive train having a hydrodynamic machine and a cooling medium circuit with a liquid or gaseous cooling medium. The hydrodynamic machine has at least one primary impeller, a secondary impeller, at least one control valve, and a control unit. The control unit actua... | 05/05/2009 |
| 7426826 | Hydrodynamic machine, for example, hydrodynamic coupling or hydrodynamic brake The invention concerns a hydrodynamic coupling or a hydrodynamic brake with the following features: having an impeller and a turbine wheel, which together form a toroidal working chamber; the impeller sits on a dri... | 09/23/2008 |
| 7343739 | Method for supplying bearing components of a hydrodynamic clutch with lubricant and corresponding hydrodynamic clutch A method for the supplying bearing elements in a hydrodynamic coupling: The coupling includes a primary wheel and a secondary wheel, which together form a working area capable of being filled with operating fluid. An operating fluid system having a direct circulatio... | 03/18/2008 |
| 7337591 | Building construction system A structural forming assembly comprises wall molding panels for forming laterally spaced, opposed molding surfaces that define a wall mold cavity for forming a wall structure. The wall panels are vertically disposed and laterally spaced to provide the molding surfac... | 03/04/2008 |
| 7331173 | Hydraulic system for a gearbox comprising a starting clutch A hydraulic system (1) for a transmission with a starter clutch is described. The hydraulic system (1) is designed to comprise a primary circuit (24) and a secondary circuit (5). A cooling system (9) for the starter clutch, a radia... | 02/19/2008 |
| 7299792 | Centrifugal compressor with improved lubrication system for gear-type transmission A centrifugal supercharger includes a case presenting a compressor chamber and a transmission chamber. An impeller in the compressor chamber is mounted to a shaft that extends into the transmission chamber. The impeller shaft is drivingly connected to a power input ... | 11/27/2007 |
| 7254942 | Temperature-monitored hydrodynamic machine A hydrodynamic machine with a turbo coupling comprising primary and secondary wheels together forming a torus shaped workspace, which can be filled with a working medium. A temperature-sensing device installed in a component, which rotates when the machine is operat... | 08/14/2007 |
| 7188712 | Hydrodynamic brakes A retarder having the following features: a rotor (1) and a stator (2) that, together, form a working space (3); a hollow shaft (4) for connecting, in a rotationally fixed manner, an input shaft (5), which is near a transmission, t... | 03/13/2007 |
| 7162936 | Connection of a gearbox cooling to the cooling circuit of an engine A vehicle transmission (2) includes a transmission housing (4), a clutch bell housing (6), and lines (20, 22, 36, 38) for a liquid cooling medium and is connected at a junction point to a vehicle engine (26). In the area of the jun... | 01/16/2007 |
| 7055316 | Fluid coupling for mobile equipment In an assembly including a diesel engine, a fluid coupling connected to the flywheel of the diesel engine, a comminuting machine and a conveyor for feeding the comminuting machine, a fluid coupling module is common to various output power train assemblies. Slip spee... | 06/06/2006 |
| 7017341 | Fluid coupling for mobile equipment In an assembly including a diesel engine, a fluid coupling connected to the flywheel of the diesel engine, a comminuting machine and a conveyor for feeding the comminuting machine, a fluid coupling module is common to various output power train assemblies. Slip spee... | 03/28/2006 |
| 6993902 | Fluid coupling for mobile equipment In an assembly including a diesel engine, a fluid coupling connected to the flywheel of the diesel engine, a comminuting machine and a conveyor for feeding the comminuting machine, a fluid coupling module is common to various output power train assemblies. Slip spee... | 02/07/2006 |
| 6969336 | Transmission unit A transmission unit (1) comprising a transmission input shaft (F) and a transmission output shaft (A) as well as a transmission basic unit (25), which is arranged between the transmission input shaft and the transmission output shaft, and which is coup... | 11/29/2005 |
| 6951101 | Method and device for controlling a hydrodynamic clutch A method for controlling and filling a hydrodynamic clutch. A set variable can be preset for a variable which at least indirectly characterizes the functional state of the hydrodynamic clutch and which serves as an input variable of a control device assigned to the ... | 10/04/2005 |
| 6933641 | Stator assembly The present invention provides a stator assembly in which axial side portions of the assembly are supported by needle bearings, wherein projections are formed on flange portions provided on races of the needle bearings and the projections are fitted into recesses fo... | 08/23/2005 |
| 6925798 | Internal combustion engine with torque converter A structure has individual oil passages for different applications of oil. A torque converter is provided on a crankshaft having an axially extending center hole. A crank chamber and a transmission chamber are separated from each other through a one-way valve. A pip... | 08/09/2005 |
| 6913437 | Hydrodynamic component A hydrodynamic component with at least two rotating impellers which form a working chamber for a working circuit. A closed circuit coupled to the inlet to the working chamber and to the outlet from the working chamber. The closed circuit is pressure tight. Pressure ... | 07/05/2005 |
| 6907958 | Cooling an axle using series flow A work vehicle includes a frame and an axle assembly coupled to the frame. The axle assembly includes a first axle shaft and a first axle housing, with the first axle shaft disposed substantially within the first axle housing; a first wheel coupled to the first axle... | 06/21/2005 |
| 6408621 | Fluid coupling assembly A fluid coupling assembly 10 is provided and includes a stationary housing 12, which h forms a first chamber 14; an inner housing or output member 16 which is rotatably disposed within chamber 14 and which forms a second chamber 18; and a rotor or drive m... | 06/25/2002 |
| 6220024 | Drive unit for conveyors, in particular for a capstan system A drive unit for a conveyor, in particular for a belt conveyor with a driving motor, includes a hydrodynamic clutch having a pump and turbine wheel which jointly form a working chamber which can be filled with operating material. The hydrodynamic clutch c... | 04/24/2001 |
| 6101810 | Hydrodynamic coupling having constant quantity of working fluid and valve for displacing working fluid between a working space and a storage space A hydrodynamic coupling having a constant quantity of working fluid, the coupling comprising, a pump wheel and a turbine wheel which together form a working space for a working fluid, a first storage chamber in fluid communication with the working space; ... | 08/15/2000 |
| 6065286 | Modular hydrodynamic coupling unit for integration into a power transmission unit A power transmission unit with at least one driving shaft that can be coupled to a driven machine includes a modular hydrodynamic coupling unit. The coupling unit includes at least two blade wheels, which together form at least one toroidal working chambe... | 05/23/2000 |
| 6044645 | Flow control for oil in transit A power transmission has a hydraulic control from which oil is distributed to various transmission components, a cooler and reservoir. A flow direction control valve is disposed in the distribution system to direct oil in transit to the reservoir during c... | 04/04/2000 |
| 5884742 | Method for cooling the operating medium in drive units for converter systems, notably chain conveyer systems and drive unit The invention relates to a method for operating a drive unit for a conveyor system, in particular for a chain conveyor drive with at least one driving machine and at least one hydrodynamic clutch. The hydrodynamic clutch can be filled with operating mediu... | 03/23/1999 |
| 5762134 | Hydraulic temperature compensated cooler bypass control for an automatic transmission A cooler bypass valve, located in a hydraulic circuit between the discharge side of a torque converter and lubrication circuit, includes a valve spool urged by feedback pressure acting in opposition to the force of a compression spring to a bypass cooling... | 06/09/1998 |
| 5320202 | Hydraulic system for torque converter A hydraulic system for a torque converter is disclosed which has a converter chamber and a lock-up clutch dividing the converter chamber into a converter pressure section and a back-up pressure section. A lock-up control valve is provided, which has a fir... | 06/14/1994 |
| 5101941 | Hydraulic retarder and control A hydraulic retarder is disposed to receive fluid as directed by a flow valve to selectively retard vehicle motion. The flow valve responds to an operator controlled modulator valve to direct fluid from a cooler which is supplied from a torque converter t... | 04/07/1992 |
| 4970860 | Fluid coupling for helicopter propeller A disengageable connection between an internal combustion engine and a propeller which serves for the drive of a gyroplane. The disengageable connection is a fluid coupling which includes a controllable oil circulatory system. The fluid coupling is suppli... | 11/20/1990 |
| 4881625 | Control valving for a hydraulic retarder A control system for a hydraulic retarder includes an inlet regulator valve and an outlet regulator valve. The inlet regulator valve admits fluid to the retarder at a predetermined pressure. The outlet regulator valve prevents fluid flow from the retarder... | 11/21/1989 |
| 4781020 | Startup slip temperature-rise alleviating outlet valve for hydrokinetic coupling A hydrokinetic coupling has a primary vane wheel (11) and a secondary vane wheel (12), which define a toroidal working chamber. A shell (17) rotates with the primary vane wheel and envelops the secondary vane wheel. A constantly open and throttled outlet ... | 11/01/1988 |
| 4680928 | Warm-up promotion device for automatic transmission An automatic transmission has a torque convertor, an inlet passage connecting between an oil inlet of the torque convertor and an outlet of a hydraulic pump driven by an engine, and an outlet passage connecting between an oil outlet of the torque converto... | 07/21/1987 |
| 4671061 | Scoop-controlled fluid couplings A scoop controlled fluid coupling has a toroidal working circuit W defined by vaned impeller and runner elements 11,12. Working liquid is supplied to the working circuit W from a rotating reservoir 9 by an adjustable scoop tube 15 having a scooping orific... | 06/09/1987 |
| 4662175 | Fluid supply circuit for a hydrodynamic coupling A fluid circuit for a hydrodynamic coupling comprises a circuit line which is connected to the outlet of the coupling and which extends via a cooler and via a flow control element back to the inlet of the coupling. An overflow valve serving for limiting p... | 05/05/1987 |
| 4517800 | Hydraulic control system for off-highway self-propelled work machines A control system has two fixed-displacement pumps for supplying pressurized fluid to a pair of steering cylinders via a steering valve and to a pair of implement cylinders via an implement valve. Connected next to the pumps is a demand valve which is pilo... | 05/21/1985 |
| 4463556 | Hydrodynamic starting torque converter A hydrodynamic reversing transmission wherein each of the forward and reverse drive trains between the input and output shafts has a starting torque converter with a stationary housing, a rotary turbine wheel and a set of adjustable guide vanes. The drain... | 08/07/1984 |
| 4440272 | Apparatus for controlling the braking effect of a hydraulic retarder A hydraulic retarder, especially for an automotive vehicle, comprising a control valve which regulates the pressure of the hydraulic fluid supplied to the decelerator which can be connected to a heat exchanger for dissipating the thermal energy generated ... | 04/03/1984 |
| 4408462 | Pressure regulating device for use in an automatic transmission A pressure regulating device for use in a hydraulic control system for an automatic transmission having a torque convertor, a gear transmission and an hydraulic control system provides a first pressure regulating valve for regulating the pressurized fluid... | 10/11/1983 |
| 4376370 | Power transmission for an automobile A power transmission for an automobile, which is provided with an oil circulation type fluid coupling and a clutch mechanism so that power may be transmitted from an output shaft of an engine to an input shaft of a gear transmission. The output and input ... | 03/15/1983 |
