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US 3,944,013 AGranted
Remote shift
OwnerRoger F. LaPointeinventor
Life of this patent
Estimating the term…
Abstract
Remote shift for a vehicle in which a shift lever at a remote station operates transmission gears in a motor vehicle by operating a piston and valve which produce and control hydraulic pressure which operates actuating pistons at the gears.
Claims6
Remote shift for use in a vehicle having an engine and a transmission, comprising
- a. a housing having a fixed portion and a movable portion,
- b. a shift handle pivotally mounted about a first axis on the movable portion of the housing,
- c. a plurality of hydraulic motors located at the transmission,
- d. a pressure hydraulic line connecting each motor to the housing,
- e. a return hydraulic line connecting all of the motors to the housing,
- the movable portion of the housing being mounted on the fixed portion of the housing for rotation about a second axis extending at a right angle to the axis of pivotal rotation of the handle, the rotation of the handle about the first axis and the rotation of the handle and the movable portion of the housing causing pressure to appear in the pressure hydraulic lines to operate the hydraulic motors, the fixed portion of the housing having a bore extending at a right angle to the said second axis, a mule piston being slidable in the bore, a piston rod extending coaxially of the piston and having a gear rack formed thereon, the movable portion of the housing having an internal gear engaging an idler gear mounted in the fixed portion of the housing and, in turn, engaging the gear rack, so that rotation of the handle and the movable portion about the said axis causes movement of the mule piston to generate pressure in hydraulic fluid in an actuating circuit.
3 more elements
Remote shift for use in a vehicle having an engine and a transmission, comprising
- a. a housing having a fixed portion and a movable portion,
- b. a shift handle pivotally mounted about a first axis on the movable portion of the housing,
- c. a plurality of hydraulic motors located at the transmission,
- d. a pressure hydraulic line connecting each motor to the housing,
- e. a return hydraulic line connecting all of the motors to the housing,
- the movable portion of the housing being mounted on the fixed portion of the housing for rotation about a second axis extending at a right angle to the axis of pivotal rotation of the handle, the rotation of the handle about the first axis and the rotation of the handle and the movable portion of the housing causing pressure to appear in the pressure hydraulic lines to operate the hydraulic motors, the movable portion of the housing being formed with a bore extending perpendicular to and spaced from the said first axis, a piston being slidable in the bore, a link joining the handle to the piston, so that rotation of the handle about the said first axis causes the piston to generate pressure in a hydraulic fluid in a control circuit.
3 more elements
Remote shift for use in a vehicle having an engine and a transmission, comprising
- a. a housing having a fixed portion and a movable portion,
- b. a shift handle pivotally mounted about a first axis on the movable portion of the housing,
- c. a plurality of hydraulic motors located at the transmission,
- d. a pressure hydraulic line connecting each motor to the housing,
- e. a return hydraulic line connecting all the motors to the housing,
- the movable portion of the housing being mounted on the fixed portion of the housing for rotation about a second axis extending at a right angle to the axis of pivotal rotation of the handle, the rotation of the handle about the first axis and the rotation of the handle and the movable portion of the housing causing pressure to appear in the pressure hydraulic lines to operate the hydraulic motors, a bore extending lengthwise of the handle and opening onto the free end of the handle, a piston being slidable in the bore and having an extension extending externally of the bore in position to be engaged by the operator's thumb, so that movement of the piston generates pressure in hydraulic fluid in a control circuit.
3 more elements
Dependencies are inferred from the claim text.