Optical switch having light source and receiver positioned stati

Details Optical switch having light source and receiver positioned stati Optical switch having light source and receiver positioned stati

1985-07-03

1987-06-09

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

455602, G02B 2700

Patent

active

046722149

ABSTRACT:
A steering switch device (200) for a vehicle having a vehicle body (1), a steering wheel (100) rotatably attached to the vehicle body, and an electrical load mounted on the vehicle body. The steering switch device (200) comprises a control means (3, 23, 24, 25, 26) for providing the electrical load with a drive control signal, the control means (3, 23, 24, 25, 26) being secured to the vehicle body (1) and constituted with a light source means (23, 24) for providing an optical signal and a light-receiving means (25, 26), and a switch means (13, 19, 20, 27) for providing the control means (3, 23, 24, 25, 26) with an operational signal, the switch means (13, 19, 20, 27) being arranged in the vicinity of the steering wheel (100) and constituted with a light-conductive path (27) for conducting the optical signal from the light source means (23, 24) to the light-receiving means (25, 26) and an optical switch (19, 20) provided in the light-conductive path (27). The switch means (13, 19, 20, 27) is adapted to be stationary relative to the vehicle body (1) irrespective of rotation of the steering wheel (100).

REFERENCES:
patent: 4190318 (1980-02-01), Upton, Jr.
patent: 4438425 (1984-03-01), Tsuchida et al.
patent: 4456903 (1984-06-01), Kishi et al.
patent: 4555631 (1985-11-01), Martens

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