F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
188/182
F16D 51/22 (2006.01) F16D 65/09 (2006.01) F16D 65/14 (2006.01) F16D 65/22 (2006.01)
Patent
CA 2023237
An improved "expanding-shoe" drum brake (100), including a spider member (38) to which brake shoes (18, 19) are pivotally mounted to move into engagement with a rotating annular brake drum (10). As is common, the shoes move in response to motion of a brake-actuating rotatable S cam (12), which is located between first adjacent ends of the brake shoes. The cam applies force to two cam followers (14, 15), which are rollers rotatably fixed to respective brake shoes. At the second end of each brake shoe an anchor pin (30, 31) is fixedly mounted to the brake shoe, as by welding (57A, 57B). In the embodiment described, a corresponding receptacle (43, 45) in the spider has a semicircular surface (49, 51) at its bottom to serve as a bearing. The bearing surface engages the anchor pin, for rotation of the shoe. The brake shoe is resistant to twisting and misalignment.
Borden Ladner Gervais Llp
Corporation Eaton
LandOfFree
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