Wheel motion indicator

Details Wheel motion indicator Wheel motion indicator

1983-10-31

1985-03-05

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Control by direction of rotation of shaft or spindle

200 6145M, 200 6146, 200 80R, 200DIG9, 200DIG29, H01H 316, H01H 3510

Patent

active

045032980

ABSTRACT:
A device for sensing wheel rotation includes a cylindrical casing with a frusto-conical bottom end which defines a ramp for a steel ball in the casing; a shaft connected to the casing top for rotation by a vehicle wheel to cause the ball to ride up the ramp; a pair of annular contacts at the bottom of the ramp which are electrically interconnected by the ball when the wheel and consequently the shaft and casing stop rotating, whereby an electrical circuit including the contacts is closed to provide a signal indicating that rotation of the wheel has ceased.

REFERENCES:
patent: 1563773 (1925-12-01), Meyers
patent: 1896798 (1933-02-01), Leslie
patent: 1996848 (1935-04-01), Arden
patent: 2715663 (1955-08-01), Bowes
patent: 2744976 (1956-05-01), Black
patent: 3372253 (1968-03-01), Baker et al.
patent: 3435164 (1969-03-01), De Perczel
patent: 3520200 (1970-07-01), Rodgers
patent: 3619524 (1971-11-01), Gillund
patent: 3622722 (1971-11-01), Jackson et al.
patent: 3646543 (1972-02-01), Morris
patent: 3763484 (1973-10-01), Byers
patent: 3812308 (1974-05-01), Bell et al.
patent: 3927286 (1975-12-01), F/o/ hl
patent: 4196429 (1980-04-01), Davis

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