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| Number | Title | Issue Date |
| 7275473 | Hydraulic control apparatus for a shifting fork in a manual transmission The invention relates to a hydraulic control apparatus (1) for a shifting fork (7) for engaging/releasing at least one gear (G) in a manual transmission, comprising at least one shifting cylinder (2, 3) and a piston unit (6) which can mov... | 10/02/2007 |
| 7222554 | Shift actuator for a transmission A shift actuator for a transmission for turning, in a direction of shift, a shift lever support mechanism mounting the shift lever of the transmission, wherein it comprises an operation lever coupled, at its intermediate portion, to said shift lever support mechanis... | 05/29/2007 |
| 6948393 | Transmission In the transmissions of the background art, two larger-diameter gears are mounted on a final shaft thereby causing an increase in weight of the transmission. The present invention reduces the weight of a transmission by mounting only one larger-diameter gear on a fi... | 09/27/2005 |
| 6513399 | Dual power flow counter shaft transmission A powershift transmission for a work vehicle is disclosed having two modes of applying power: a direct connection through a series of gears, and a connection through a torque converter integral with the transmission. The two paths branch at the input shaf... | 02/04/2003 |
| 5857381 | Hydraulic operating device and gearbox provided with such an operating device Hydraulic operating device, in particular for the operation of a selector fork of a gearbox, and gearbox provided with such an operating device. The device comprises a double-acting cylinder, which is coupled to the selector fork, and a reversible pump. T... | 01/12/1999 |
| 5341633 | Apparatus for winding a roving applied to a roving frame In a roving winding apparatus applied to a roving frame provided with a plurality of draft parts and corresponding bobbin wheels, a bobbin shaft for driving the bobbin wheel, a bobbin rail on which the bobbin shaft is rotatably horizontally mounted along ... | 08/30/1994 |
| 5172603 | Electrically actuated shifting method and apparatus A method and apparatus for electrically activating range shift apparatus in transmissions of trucks or the like wherein such activation is customarily accomplished by actuation of valves on air lines from the shift apparatus knob to the proximity of the t... | 12/22/1992 |
| 5125326 | Three position actuator having a neutral normal position for shifting a two speed transfer case A three position actuator which is used to position the gear range control lever on a two speed transfer case. Three positions are required to achieve HIGH, LOW and NEUTRAL. Two individual air chambers may be selectively charged with compressed air to mov... | 06/30/1992 |
| 4982617 | Gearshift system Transmission In conventional transmissions utilized, for example, in rolling mill facilities, the shifting procedure is cumbersome and time-consuming. The shifting process is to be simplified in the novel transmission. The multiple-speed, e.g. two-speed transm... | 01/08/1991 |
| 4970942 | Device designed for the control of a gearbox synchronized by an electronic calculator A device designed to actuate the positive clutches of gearbox sliding gears following synchronization of the respective pairs of gears. A cylinder mechanism is provided on each sliding plate of the gearbox, as well as solenoid valves which are controlled ... | 11/20/1990 |
| 4936156 | Mechanical transmission shifting mechanism An improved fluid operated (X-Y) shifting mechanism (100) is provided for shifting gears or clutches of a mechanical change gear transmission. Mechanism (100) features a shift finger (14) that is secured to a shaft (6) that is moved in an axial (Y--Y) dir... | 06/26/1990 |
| 4934207 | Hydraulically operated transmission with reverse torque limiter Hydraulically operated transmission having plural gear trains each selectively established by engagement of an associated hydraulic clutch. Each hydraulic clutch has an outer member and an inner member with the inner member being divided into at least a f... | 06/19/1990 |
| 4920813 | Power take-off control apparatus Power take-off control apparatus which automatically shifts a vehicle speed range transmission into neutral whenever a power take-off mechanism is engaged to prevent accidental engagement of a drive gear while the power take-off mechanism is in use. A pis... | 05/01/1990 |
| 4899607 | Electrically controlled pressurized fluid actuated X-Y shifting mechanism An electrically controlled, fluidly actuated X-Y type shifting mechanism (30) for cooperation with a mechanical change gear transmission shift bar housing assembly (10) normally controlled by a manual shift lever is provided. The mechanism (30) includes a... | 02/13/1990 |
| 4722237 | Fluid actuated shift bar housing assembly having a centering cylinder therein A pressurized fluid actuated shift bar housing assembly (12) for a change gear transmission (10) is provided having a plurality of shift bars (54, 56, 58), each shift bar having associated therewith a first (108) and a second (110) selectively pressurized... | 02/02/1988 |
| 4635495 | Multi-speed reversible power transmission A multi-speed power transmission utilizing ten gears, seven clutches and four shafts provides eight forward speeds and four reverse speeds. The transmission is coaxial in that the input and the output shafts are on the same centerline. The transmission re... | 01/13/1987 |
| 4633987 | Pressure-medium actuated shifting arrangement Pressure-medium actuated shifting arrangement for a gear transmission, primarily for a multispeed transmission, in which the speed selection lever performs a movement in accordance with a double H shifting configuration. Within the reach of the driver, in... | 01/06/1987 |
| 4603596 | Actuation system for transmission synchronizer providing regulated engagement pressure An actuation system for a transmission synchronizer, including a first member and a second member, the second member being pressed against the first member for synchronization of two relatively rotating elements, includes a variable pressure type actuator... | 08/05/1986 |
| 4549449 | Gear reducer A plural speed planetary gear box has an input member and output member coupled together directly by a shiftable coupling sleeve or coupled together indirectly by a planetary gear set. The shift from direct to indirect coupling involves shifting the coupl... | 10/29/1985 |
| 4538475 | Speed-changing transmission device for vehicles A speed-changing transmission device for vehicles includes a speed-changing shaft connected to rear wheels and disposed at the rear side of an input shaft driven by an engine co-axially with the input shaft, a counter shaft mounted in parallel with the sp... | 09/03/1985 |
| 4534236 | Vibration and noise reduction means for a transmission vehicle A transmission for vehicles including a plurality of alternative gear trains. It comprises a mechanism for bringing an end face of a boss of at least one gear, not concerning the power transmission, on a shaft and a surface of another member, relatively r... | 08/13/1985 |
| 4531422 | Transmission shift rod interlock system A shift rod air interlock system provides a mechanical apparatus for insuring a neutral position in a two-speed air shifted compound transmission whenever air to an auxiliary air shift cylinder is interrupted. The apparatus prevents the transmission from ... | 07/30/1985 |
| 4528861 | Constant mesh gearboxes A constant mesh parallel shaft gearbox providing a plurality of ratios has its ratio controlled by having, in place of conventional synchronizer assemblies and dog clutches, rotary positive displacement pumps each having one element (4) connected to the g... | 07/16/1985 |
| 4380177 | Gear shift control mechanism for servo-driven transmission A gear shift mechanism for providing a vehicle operator with a "feel" of a desired gear change being completed in a power operated gear unit. A drum disc connected to the gear shift lever is formed with a recess in which a locking pin of an actuator valve... | 04/19/1983 |
| 4326433 | Hydraulically controlled power transmission having friction plate clutches for selectively engaging a plurality of change speed gears A hydraulically controlled transmission for vehicles such as heavy-duty, high horsepower, off-highway trucks, the transmission having a plurality of selectively engagable change speed gears and hydraulically actuated friction type clutches for selectively... | 04/27/1982 |
| 4311062 | Countershaft gear transmission A countershaft gear transmission is disclosed wherein a plurality of main gears including a first main gear and a second main gear rotatably mounted to a main or output shaft, a countershaft drivingly connected to an input shaft has counter gears in const... | 01/19/1982 |
| 4287778 | Hydraulic valve for two-speed power take-off drive A hydraulic valve for a two-speed power take off selectively operated by a reversible stub shaft providing the proper output drive.... | 09/08/1981 |
| 4252031 | Automatic transmission An automatic transmission comprising a plurality of speed-change hydraulic clutches selectively operated in dependence of various speeds separately carried by an input shaft and an output shaft, and wherein working oil is supplied from a hydraulic oil sou... | 02/24/1981 |
| 4149428 | Hydraulic shift mechanism for transfer case with multiple path drive system Apparatus for a transfer case that has a multiple path drive system including a neutral position, a first drive path of one speed range and a second drive path of a different speed range, the apparatus including (1) a hydraulic cylinder assembly having pi... | 04/17/1979 |
| 4093051 | Hydraulic control system for power shift transmission A hydraulic control system including a plurality of individual clutch valves for selective operation for controlling clutches in a power shift transmission. A modulating valve and a clutch valve release mechanism are included for modulating the clutch eng... | 06/06/1978 |
| 4085834 | Valve assembly for power shift transmission A valve assembly for a power shift transmission with a valve body and valve cover integrally mounted on the transmission housing. The valve body includes flow control valves while the valve cover includes pressure control valves for regulating and modulat... | 04/25/1978 |
| 4049101 | Apparatus for preventing faulty operation in transmission of motorcars Apparatus for preventing faulty operation in automatic transmissions of motorcars, the transmission having a speed-change sensor and a shift valve therein, for controlling the operation of the latter, the apparatus comprising oil-pressure operated high-sp... | 09/20/1977 |
| 3991634 | Countershaft auxiliary transmission A countershaft transmission having an input shaft selectively driving a clutch carrier connected to the output shaft by selective drive through direct drive and through countershaft driven quill shafts to the clutch carrier.... | 11/16/1976 |
| 3972246 | System for supplying hydraulic fluid to aggregates on spindles or the like A multiple-spindle machine tool or a multi-speed transmission wherein the spindles or shafts carry several fluid-operated aggregates in the form of clutches, brakes and/or work clamping devices which receive pressurized fluid by way of axially movable spo... | 08/03/1976 |
| 3945265 | Fluid actuated gear changing system A gear changing system is disclosed for changing the gears in one or more automotive or truck transmissions of the mechanical type. Each rail or equivalent linkage for supporting and moving the gear changing fork is connected to the operating shaft of a f... | 03/23/1976 |
