Open framework disc brake caliper having an elastomeric cylinder liner
First Claim
1. A disc brake caliper comprising a unit cast body including an inboard support;
- an outboard support spaced from said inboard support as a part of said body;
an open framework as a part of said body rigidly interconnecting said inboard and outboard supports;
a brake cylinder having a closed end wall formed on and a part of and projecting through said inboard support arranged inwardly of said framework and having a bore with an open end, extending on a longitudinal axis;
a liner of elastomeric material encompassing substantially the entire cylinder wall of and bonded to said bore and having a smooth cylindrical surface; and
a piston compressively and yieldably nested and sealed within said liner.
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Accused Products
Abstract
A disk brake caliper comprises a cast body including an inboard support, an outboard support, and an open framework interconnecting both supports. The caliper body includes a cast brake cylinder closed at one end arranged inwardly of the framework and extending through the inboard support. The cylinder has a liner of elastomeric material bonded to its interior and yieldably receives a pressure piston of cylindrical shape. The method of forming a liner within the cylinder includes inserting a polished steel plug mold into the cylinder having a bore and an end wall which are coated with a bonding agent, uniformly spacing the plug mold from the cylinder bore and end wall, clamping the mold upon the cylinder, injecting uncured rubber through a passage in the mold and filling the space between the cylinder and the plug and curing the rubber until it adheres and is bonded to the cylinder.
61 Citations
13 Claims
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1. A disc brake caliper comprising a unit cast body including an inboard support;
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an outboard support spaced from said inboard support as a part of said body; an open framework as a part of said body rigidly interconnecting said inboard and outboard supports; a brake cylinder having a closed end wall formed on and a part of and projecting through said inboard support arranged inwardly of said framework and having a bore with an open end, extending on a longitudinal axis; a liner of elastomeric material encompassing substantially the entire cylinder wall of and bonded to said bore and having a smooth cylindrical surface; and a piston compressively and yieldably nested and sealed within said liner. - View Dependent Claims (2, 3, 4)
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5. A disc brake caliper comprising a unit cast body including an inboard support;
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an outboard support spaced from said inboard support as a part of said body; an open frame work as a part of said body rigidly interconnecting said inboard and outboard supports; a brake cylinder having a closed end wall formed on and a part of and projecting through said inboard support arranged inwardly of said framework and having a bore with an open end, extending on a longitudinal axis; a liner of elastomeric material bonded to said bore and having a smooth cylindrical surface; a piston compressively and yieldably nested and sealed within said liner; said piston being of said cylindrical shape and having a transverse end wall; and at least one circumferential rib on said piston pressed into said liner and forming a seal relative to said liner. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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Specification