04804073 is referenced by 63 patents and cites 5 patents.

The electrically operated disc brake (10, 110, 310, 410) may be operated by either hydraulic pressure and an electric motor or operated solely by means of an electric motor. The electric motor (40, 340, 440) drives a sun gear (52, 352, 452) of a planetary gear assembly (50, 150, 350, 450). The planetary gear assembly (50, 150, 350, 450) includes a fixed ring gear (70, 370, 470) and a rotatable ring gear (80, 180, 380, 480), the rotatable ring gear (80, 180, 380, 480) having fewer teeth than the fixed ring gear (70, 370, 470) so that rotation of the planetary gears (54, 56, 58) effects a slower rate of rotation of the rotatable ring gear (80, 180, 380, 480). The rotatable ring gear (80, 180, 380, 480) engages a screw (88, 188, 388, 488) which is connected with the piston (30, 130, 330, 430). The piston (30, 330, 430) may be displaced by hydraulic fluid for a service application and the electric motor (40, 340, 440) utilized for a parking application. Alternatively, the piston (130) may be displaced by the electric motor (40) for both service and parking brake applications.

Title
Electrically operated disc brake with back-off protector
Application Number
946400
Publication Number
4804073
Application Date
April 19, 1988
Publication Date
February 14, 1989
Inventor
Richard N DeHays
Mishawaka
IN, US
Robert W Jackson
South Bend
IN, US
Alistair G Taig
Edwardsburg
MI, US
Agent
Ken C Decker
Larry J Palguta
Assignee
Allied Signal
NJ, US
IPC
F16D 55/16
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