Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1975-11-17
1978-07-04
Silverstrim, John P.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
123103R, B60K 3100
Patent
active
040983684
ABSTRACT:
A vehicle road speed control system having a redundant release valve assembly. A solenoid control actuated control valve energized by application of the vehicle brakes dumps the higher pressure side of the servomotor to the lower pressure side to balance the pressures on the power wall. The power wall return spring and the throttle valve return spring respectively return the power wall and the throttle valve to the closed throttle position. If the effective opposed areas of the power wall are substantially different, a bleed orifice is utilized to offset the difference. The servomotor output rod extends through the higher pressure servomotor chamber in two illustrated embodiments and through the lower servomotor pressure chamber in another embodiment.
REFERENCES:
patent: 1055741 (1913-03-01), Halbleib
patent: 3087340 (1963-04-01), McMurray et al.
patent: 3196904 (1965-07-01), Schniers
patent: 3524516 (1970-08-01), Bremmann
patent: 3557898 (1971-01-01), Emery
patent: 3921751 (1975-11-01), Sakakibara et al.
General Motors Corporation
McGraw D. D.
Silverstrim John P.
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