Vehicle parking brake mechanism
AssigneeWickes Manufacturing Company
InventorsWilliam L. De Leeuw, Kenneth R. Creighton
Life of this patent
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Abstract
A foot operated vehicle parking brake mechanism comprises a brake pedal lever and a brake cable actuator pivotal about a common axis, the brake pedal lever being operable upon depression to displace the cable actuator to a cable tensioning position in which the vehicle brake is set. The cable actuator and pedal lever are independently releaseably retained in the cable tensioning and depressed positions and, respectively, against the bias of the tensioned cable and a pedal lever biasing spring. A manually operable release mechanism operates to release the pedal lever from its depressed position and, during return of the pedal lever to its retracted position, the pedal lever operates to release the cable actuator for return to its released position.
Claims23
A vehicle parking brake operating mechanism comprising support means, brake cable tensioning means engaged with a brake cable and supported on said support means for displacement between cable tensioning and released positions, brake pedal lever means supported on said support means for displacement between depressed and retracted positions, means biasing said pedal lever means toward said retracted position, means interengaging said pedal lever means and cable tensioning means and displacing said cable tensioning means to said cable tensioning position in response to displacement of said pedal lever means from said retracted to said depressed position, means releaseably holding said pedal lever means in said depressed position and said cable tensioning means in said cable tensioning position, and brake release means sequentially releasing said pedal lever means and cable tensioning means for displacement of said pedal lever means from said depressed to said retracted position and displacement of said cable tensioning means from said cable tensioning to said released position.
A vehicle parking brake operating mechanism comprising support means, brake cable drum means engaged with a brake cable and supported on said support means for pivotal displacement in opposite directions about an axis and between cable tensioning and released positions, a brake pedal lever supported on said support means for pivotal displacement in opposite directions about said axis between depressed and retracted positions, one-way clutch means interconnecting said lever and drum means PG,21 for displacement of said lever from said retracted toward said depressed position to displace said drum means from said released to said cable tensioning position, drum holding means releaseably holding said drum means in said cable tensioning position, biasing means biasing said lever from said depressed toward said retracted position, pedal lever holding means releaseably holding said pedal lever in said depressed position against the bias of said biasing means, first release means releasing said pedal lever holding means for said pedal lever to be displaced from said depressed to said retracted position by said biasing means, and second release means actuated by said pedal lever during said displacement thereof to said retracted position and releasing said drum holding means for said drum means to be displaced from said cable tensioning to said released position thereof by the tension in said cable.
Dependencies are inferred from the claim text.