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US 3,945,472 AGranted
Lever actuated brake assembly
OwnerJack Peters, DeLoris Joan Barrettinventors
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Abstract
A brake assembly is disclosed in which a first pivoted lever receives and transmits brake actuating force to a second pivoted lever via rollers which transfer force between the two levers at a point which, due to the geometry of the second lever, moves progressively closer to the pivot point of the first lever and farther from the pivot point of the second lever as force is applied to the first lever.
Claims9
A brake apparatus comprising:
- a first lever;
- first pivot means for said first lever;
- at least one brake lever;
- second pivot means for said at least one brake lever;
- at least one brake shoe supported by said at least one brake lever;
- and
- means responsive to the pivoting of said first lever about said first pivot means as the brake is applied for applying a force from a first point which moves along the length of said first lever in a direction to increase the mechanical advantage of said first lever, to a second point which moves along the length of said at least one brake lever to concurrently increase the mechanical advantage of said at least one brake lever whereby pivoting of said first lever to apply braking force provides a continuous change in the effective length of both said levers and a continuous increase in the mechanical advantage of both said first lever and said at least one brake lever.
4 more elements
Dependencies are inferred from the claim text.