Idle speed controller improvement

Details Idle speed controller improvement Idle speed controller improvement

1984-10-05

1985-11-12

Dobeck, B.

Electricity: motive power systems

Motor-reversing

Periodic- or intermittent-reversing

310 68B, 318466, 318467, H02P 122

Patent

active

045530769

ABSTRACT:
An improvement for a controller (C) for controlling the idle speed of an engine. A logic circuit (1) is responsive to the position of switches (S1, S2) and the direction in which an extendible and retractable member (T) is to be driven by a motor (M) to energize the motor. The logic circuit includes logic gate (3) responsive to both switches being open when the member is at its extreme extended position and the member is to be retracted to energize the motor to retract the member. The logic circuit also includes a logic gate (5) responsive to both the switches being open when the member is at its extreme retracted position and the member is to be extended to energize the motor to extend the member. The motor is thus energized to move the member in the appropriate direction even though a switch which should be closed is open due to dust or debris preventing switch closure.

REFERENCES:
patent: 4028604 (1977-06-01), Togo et al.
patent: 4078198 (1978-03-01), Murakosi et al.
patent: 4096903 (1978-06-01), Ringle, III
patent: 4131830 (1978-12-01), Lee et al.
patent: 4132939 (1979-01-01), Kameyama et al.
patent: 4315174 (1982-02-01), Doerr
patent: 4417185 (1983-11-01), Bullat

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