Shaft rotary position sensor

Details Shaft rotary position sensor Shaft rotary position sensor

1993-02-04

1994-04-05

Lateef, Marvin M.

Electrical resistors

Mechanically variable

With resistor actuator position indicator

338162, 338176, 338DIG1, H01C 1000, H01C 1032

Patent

active

053009185

ABSTRACT:
A position sensor assembly for sensing the rotary position of a rockshaft of a hitch mechanism includes a rotary potentiometer coupled to the rockshaft. The rockshaft is enclosed in a rockshaft housing and a sensor housing is attached to the rockshaft housing. The potentiometer is attached to an outside surface of the sensor housing and has a sensor shaft which extends through a portion of the sensor housing. The position sensor has a first set of gear teeth on the rockshaft meshing with a second set of gear teeth on the sensor shaft. The sensor housing at least partially encloses the second set of gear teeth. The first and second sets of gear teeth are preferably configured as gear segments. The sensor shaft is supported for rotation by the sensor housing. The potentiometer is preferably a spring-pre-loaded potentiometer. A second spring is mounted on the second set of gear teeth and is engagable with a wall of the sensor housing to define an assembly position.

REFERENCES:
patent: 3150635 (1964-09-01), Root
patent: 3686608 (1972-08-01), Wahlberg
patent: 4132272 (1979-01-01), Holloway et al.
patent: 4286386 (1981-09-01), Long
patent: 4313349 (1982-02-01), Heitman et al.
patent: 4343365 (1982-08-01), Rajagopal et al.
patent: 4846283 (1989-07-01), Batcheller
patent: 5190111 (1993-03-01), Young et al.
patent: 5231892 (1993-08-01), Haight
Hindhede, U., "Machine Design Fundamentals, Chapter 13 Spur and Helical Gears", pp. 306 and 308, 1983.
J I Case, "Section 8009 Electronic Hitch Alignment", p. 8009-7, 1987.

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