"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 8074449 | Hydrodynamic clutch Impeller and turbine wheels form a toroidal working chamber of a hydrodynamic clutch filled with working medium. A throttle plate extends circumferentially near a central diameter of the working chamber The throttle plate moves axially, from an inactive position wit... | 12/13/2011 |
| 7478529 | Hydrodynamic clutch and method for influencing the torque that can be picked up by the hydrodynamic clutch The invention relates to a hydrodynamic clutch which comprises a primary impeller and a secondary impeller which together define a working chamber. The clutch also comprises means for influencing the transmission behavior of the hydrodynamic clutch, especially for i... | 01/20/2009 |
| 4625512 | Single stage, twin valve, variable torque converter A single stage, twin valve, variable torque converter has a vaned input impeller, a vaned, single stage output turbine and a twin valve all disposed in a fluid filled, generally torroid-shaped chamber of a housing. The torque converter by means of its twi... | 12/02/1986 |
| 4411340 | Hydrodynamic brakes A hydrodynamic brake is disclosed of a kind comprising a rotor bucket wheel and a stator bucket wheel in a housing and defining a torus-shaped working chamber and defining between them a bucket wheel gap. An outlet duct surrounds the perimeter of the roto... | 10/25/1983 |
| 4128999 | Hydraulic torque converter with a lock-up clutch and an axially retractable reactor In a torque converter equipped with a fluid operated lock-up clutch to provide either a fluid or a rigid mechanical connection between an input and an output shaft, the reactor member is arranged for movement along the converter axis between a working and... | 12/12/1978 |
| 4094143 | Variable torque hydraulic clutch The hydraulic energy absorbing device of U.S. Pat. Re. 28,736 is adapted to serve as a variable torque hydraulic clutch for a flywheel catapult by mobilizing the fixed array of annular vanes disposed about the rotor blades and mounting them on an output s... | 06/13/1978 |
| 4043434 | Mechanically adjustable dual pocket hydromatic brake A hydrokinetic action brake for particular use in controlling the speed of a hoisting drum used in the drilling of oil and gas wells. The brake includes dual pocketed stator and rotor assemblies with a cylindrical member movable within the pockets to adju... | 08/23/1977 |
| 4037692 | Speed responsive fluid coupling and clutch A fluid coupling comprising a cylindrical housing having first and second vane supports secured to the opposite ends thereof. An input shaft is secured to the first vane support so that rotation of the input shaft causes rotation of the first and second v... | 07/26/1977 |
| 3955367 | Fluid clutches In a fluid clutch of the type comprising cooperating pump and turbine elements between which toroidal power-transmitting liquid vortices can be established, control of the clutch by an operator is effected by moving a baffle within the working chamber bet... | 05/11/1976 |
| 3952508 | Control for fluid coupling A temperature and speed responsive control for a fluid coupling adapted to drive a cooling fan for an internal combustion engine. The coupling is of the hydrokinetic type and includes an input or drive member adapted to be driven by the engine, an output ... | 04/27/1976 |
| 3934415 | Fluid coupling with movable vanes A fluid clutch of the kind comprising cooperating radiallyvaned pump and turbine elements has at least a portion of each vane of one of the sets of vanes of the pump and turbine elements movable either by axial motion or by pivoting motion under an extern... | 01/27/1976 |