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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 4811225 | Ratio control technique for continuously variable transmission A ratio control system for use in a continuously variable transmission is disclosed in conjunction with an improved technique for operation thereof. Individual gain schedules provide proportional gain in response to a selected one of a number of modes dep... | 03/07/1989 |
| 4551540 | Substituted 2,5-dimethylpyrroles N-substituted 2,5-dimethylpyrroles and a method for their preparation. The method requires the reaction of a 2,5-hexadione such as acetonylacetone with a urethane or a phosphoroamidate. The reaction is carried out at elevated temperatures, preferably in a... | 11/05/1985 |
| 4551539 | Substituted 2,5-dimethylpyrroles N-substituted 2,5-dimethylpyrroles and a method for their preparation. The method requires the reaction of a 2,5-hexadione such as acetonylacetone with a urethane or a phosphoroamidate. The reaction is carried out at elevated temperatures, preferably in a... | 11/05/1985 |
| 4526560 | Power transmission chain and link therefor An integral link-and-pivot member for an endless power transmission chain comprising longitudinal spaced web portions joined to transversely oriented joint portions, each joint portion having an arcuate or curved surface, said surfaces facing one another ... | 07/02/1985 |
| 4523451 | Hydraulic proximity probe An hydraulic proximity probe arrangement for determining the spacing of the surface of a rotating body from another fixed body as it rotates in a fluid medium. The body is provided with a plurality of circumferentially and equally spaced surface irregular... | 06/18/1985 |
| 4507489 | Acetal esters Esters of monoacetals of pentaerythritol. The monoacetals result from the reaction of a 4-hydroxyphenylpropionaldehyde and pentaerythritol, and the further reaction of this monoacetal with either of two particular acid chlorides yields the esters of the i... | 03/26/1985 |
| 4491644 | Flame-retardant polymer compositions A flame-retarded polymer composition wherein the polymer constituent is an olefin polymer, a polymethyl acrylate or methacrylate, or polystyrene. The polymer is rendered flame-retardant by the presence of an amino-s-triazine salt of bis-(pentaerythritol p... | 01/01/1985 |
| 4480093 | Amines salts of phosphoric acid Amino-s-triazine salts of bis-(pentaerythritol phosphate) phosphoric acid. The salts are effective flame-retardant additives in a number of different types of polymers.... | 10/30/1984 |
| 4478998 | Process for preparing amine salts of phosphoric acids A process for preparing amino-s-triazine salts of bis-(pentaerythritol phosphate) phosphoric acid. The process involves reacting the particular amine with the corresponding acid chloride, i.e., the phosphorous oxychloride, in the presence of water. The sa... | 10/23/1984 |
| 4248055 | Hot gas bypass control for centrifugal liquid chillers A control system and a method are disclosed for automatically controlling a hot gas bypass valve as a function for cooling load and head. A valve/controller is provided for controlling the operation of the hot gas bypass valve so as to avoid surging of th... | 02/03/1981 |
| 4238017 | Clutch mechanism A temperature responsive drive mechanism for an engine accessory adapted to be connected to the oil pressure supply line for an engine and including a fluid circuit which is temperature responsive and requires only two fluid passages to provide for lubric... | 12/09/1980 |
| 4218957 | Flow control valve A flow control valve in fluid communication with a variable orifice which is utilized to control speed of a fluid motor, the valve providing a constant pressure drop across the variable orifice whereby consistent control of speed of the motor may be maint... | 08/26/1980 |
| 4195536 | Planetary transmission A planetary transmission mechanism comprising two simple planetary gear sets driven by the engine of a vehicle by an input clutch or torque converter and having four friction engaging devices and a one-way engaging device to establish four forward driving... | 04/01/1980 |
| 4176737 | Drive mechanism A thermally responsive clutch for connecting a driving shaft to a driven pulley including cylindrical clutch surfaces on the shaft and the pulley with a wrapping coil spring in engagement with both surfaces. An engaging pawl is mounted adjacent said sprin... | 12/04/1979 |
| 4174724 | Flow valve A flow valve mechanism comprising a rotating shaft with a valve body mounted on the shaft for rotation therewith and a valve member mounted for radial movement with respect to said body and said shaft. The valve member has a weighted head and a pressure d... | 11/20/1979 |
| 4157136 | Torque responsive centrifugal clutch A friction shoe assembly for a speed-responsive clutch adapted for use in a hydrodynamic device to couple turbine and impeller members including a disc secured to the turbine member having a series of cam surfaces thereon formed in apertures in the discs.... | 06/05/1979 |
| 4142619 | Dump valve for wet clutch A dump valve mechanism for a wet clutch wherein the clutch includes a plurality of friction elements supplied with lubricating and cooling oil when the clutch is engaged and including a fluid pumping means as a part of a release mechanism, the release mec... | 03/06/1979 |
| 4140208 | Centrifugally engaged servo clutch for torque converter lock-up A speed-responsive engaging mechanism adapted for use in a hydrodynamic device to couple turbine and impeller members including a disc secured to the turbine member having a series of convexly curved cam surfaces thereon formed in apertures in the discs w... | 02/20/1979 |
| 4140210 | Centrifugally and torque engaged clutch A speed-responsive engaging mechanism adapted for use in a hydrodynamic device to couple turbine and impeller members including a disc secured to the turbine member having a series of cam surfaces thereon formed in apertures in the discs with a series of ... | 02/20/1979 |
| 4131036 | Method and apparatus for transmission control system A control system to change gear ratio in an automatic transmission through friction elements engaged by hydraulic pressure. A closed loop electrical circuit is completed between a transducer, which provides an electrical signal related to the output torqu... | 12/26/1978 |
| 4131032 | Rotary drive member A sprocket gear assembly comprising a sheet metal cup-shaped sprocket member having teeth formed from the sheet metal on an annular outer portion and a central hub having splines formed therein, the hub and outer portion being separated by a radial flange... | 12/26/1978 |
| 4123905 | Torque converter assembly A high torque ratio hydraulic torque converter having impeller, turbine and stator elements in which the stator is assembled to the housing of the converter and secured in place by drilling and driving of locking pins and in which a flow path is defined w... | 11/07/1978 |
| 4124106 | Wedging centrifugal lock up clutch with torque limiter A speed-responsive engaging mechanism adapted for use in a hydrodynamic device to couple turbine and impeller members including a disc secured to the turbine member having a series of cam surfaces thereon formed in apertures in the discs with a series of ... | 11/07/1978 |
| 4123952 | Planetary transmission mechanism A planetary overdrive gear mechanism for an automatic transmission utilizing a double-acting one-way clutch with means to immobilize the cage for the one-way clutch with the rollers in an intermediate position whereby the inner and outer races are free to... | 11/07/1978 |
| 4117918 | Wedging centrifugal clutch with torque limiter A speed-responsive engaging mechanism adapted for use in a hydrodynamic device to couple turbine and impeller members including a disc secured to the turbine member having a series of cam surfaces thereon formed in apertures in the discs with a series of ... | 10/03/1978 |
| 4114478 | Planetary transmission mechanism A planetary overdrive gear mechanism for an automatic transmission utilizing a double-acting one-way clutch with means to immobilize the cage for the one-way clutch with the rollers in an intermediate position whereby the inner and outer races are free to... | 09/19/1978 |
| 4106368 | Transmission control system A control system used to change the gear ratio in a gear set regulated by a signal from an electronic control unit is disclosed. A transducer provides an output torque signal which is compared to other signals for controlling the gear change. The ratio ch... | 08/15/1978 |
| 4098148 | Transmission controls A control mechanism for a planetary overdrive gear mechanism for an automatic transmission which utilizes a double-acting one-way clutch with a clutch controller to immobilize the cage for the one-way clutch to allow inner and outer races to rotate relati... | 07/04/1978 |
| 4094393 | Clutch mechanism A temperature responsive drive mechanism for an engine accessory adapted to be connected to the oil pressure supply line for the engine and including a fluid circuit which is temperature responsive and requires only two fluid passages to provide for lubri... | 06/13/1978 |
| 4083440 | Engaging mechanism A speed-responsive engaging mechanism adapted for use in a hydrodynamic device to couple turbine and impeller members including a disc secured to the turbine member having a series of cam surfaces thereon formed in apertures in the discs with a series of ... | 04/11/1978 |
| 4080848 | Automotive transmission An automotive transmission having a planetary gear set with friction clutches and brakes controlling the gear sets to obtain four forward speed ratios and a single reverse speed ratio. The transmission includes an output gear mounted between the planetary... | 03/28/1978 |
| 4066157 | Impeller disconnect and brake mechanism A clutch and brake device for the impeller of a hydrodynamic device in which the clutch is engaged by selectively admitting pressure from a source of pressure to a clutch servomotor, this pressure being conducted to a release chamber for the brake servomo... | 01/03/1978 |
| 4063623 | Fluid coupling with centrifugal and torque responsive lock up clutch A speed-responsive engaging mechanism, adapted for use in a hydrodynamic device to couple the turbine and impeller members, including a disc secured to the turbine member having a series of cam surfaces formed in apertures in the periphery thereof with a ... | 12/20/1977 |
| 4059365 | Sheet metal hub assembly A method of manufacturing a hydraulic torque converter impeller member and the product of such manufacture in which a hardened steel cylindrical bearing is assembled to a drawn hub portion of a generally annular sheet metal part to comprise a torque conve... | 11/22/1977 |
| 4054065 | Multiple axle drive mechanism A torque transfer mechanism for transferring drive to a pair of tandem driving axles of a vehicle including two double-acting one-way devices each comprised of a plurality of wedging elements and an input shaft having a drive race thereon in operative eng... | 10/18/1977 |
| 4049094 | Centrifugal and torque responsive lock up clutch for couplings A speed responsive engaging mechanism, adapted for use in a hydrodynamic device to couple the turbine and impeller members, including an annular support secured to the turbine member having a series of cam surfaces formed in the periphery thereof with a s... | 09/20/1977 |
| 4042083 | Torque convertor with centrifugal lock up clutch A speed responsive engaging mechanism mounted in the central toroidal space in a hydrodynamic device adapted to couple the turbine and impeller members, including an annular support secured to the turbine member having a series of cam surfaces formed in t... | 08/16/1977 |
| 4040339 | Axially adjustable clutch pistons A piston for a fluid actuator being formed of two annular sheet metal members having axially and radially extending portions whereby when said piston transmits force, a box-like sheet metal structure is formed.... | 08/09/1977 |
| 4037691 | Centrifugal lock up clutch for fluid couplings A speed responsive engaging mechanism, adapted for use in a hydrodynamic device to couple the turbine and impeller members, including a series of ramps formed in the turbine member each defining a cam surface. A friction shoe is provided in each ramp in c... | 07/26/1977 |
| 4036032 | Universal joint A constant velocity universal joint for transmission of torque between driving and driven shafts, wherein a drum member is secured to one of the shafts on which are mounted at least three trunnions each having a ball member slidably and rotationally mount... | 07/19/1977 |
