Linear position encoder

Details Linear position encoder Linear position encoder

1984-02-21

1986-04-22

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250229, H01J 314

Patent

active

045844720

ABSTRACT:
Information related to the position of a control member of a vehicle is required for control of power delivered to the vehicle motors. Available linear position encoders are expensive and prone to damage in an industrial environment. The instant apparatus provides a simple and durable linear position encoder having a piston adapted to move within a housing. A plurality of sensors are each positioned along a different housing pathway and a plurality of sensible members are each positioned along a different piston pathway. In response to movement of the piston within the housing the sensors deliver respective position signals to an electric circuit means, which, in turn, delivers respective coded digital signals to a vehicle controller. The apparatus is digital in design and is of simple, rugged, and inexpensive construction.

REFERENCES:
patent: 3796498 (1974-03-01), Post
patent: 4011448 (1977-03-01), Hordeski
patent: 4110611 (1978-08-01), Tann et al.
patent: 4342910 (1982-08-01), Pfeifer et al.
patent: 4429219 (1984-01-01), Yochum et al.

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