Automatic transmission parking brake mechanism

Details Automatic transmission parking brake mechanism Automatic transmission parking brake mechanism

1980-09-11

1983-01-25

Bonck, Rodney H.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

74577S, 188 31, 188 69, B60T 102, B60K 4126

Patent

active

043698670

ABSTRACT:
A parking brake mechanism for an automatic transmission having a parking gear and a parking pawl, the latter being pivoted on a transmission housing, a cam plate and a detent plate journalled rotatably on a support shaft, for rotation to preselected angular positions determined by the detent geometry, a cam surface on the cam plate registering with the pawl and forcing the pawl into engagement with the gear, preloaded spring means joining said cam plate and said detent plate together and accommodating relative displacement thereof upon rotation of said detent plate when the pawl is out of registry with a space between adjacent teeth on said gear.

REFERENCES:
patent: 2875856 (1959-03-01), Mrlik et al.
patent: 2954103 (1960-09-01), Sand
patent: 2964135 (1960-12-01), Sand
patent: 3213968 (1965-10-01), Platz
patent: 3601230 (1971-08-01), Platz
patent: 3912050 (1975-10-01), Iwanaga et al.
"1979 Ford/Mercury Shop Manual", Ford, Ford FMX Transmission, FIGS. 1 & 31, 1978.
1959 Ford Car Shop Manual, copyright Ford Motor Company, 1958, Part 7, pp. 7-25 and 7-40.

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