Drum Brake Assembly Configured to Reduce Audible Noise During Braking

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20170016496A1
SERIAL NO

14802669

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A drum brake assembly and method for designing the assembly are provided. The assembly includes a brake spider, a pair of brake shoes pivotally coupled to the brake spider at one end, and a pair of cam followers disposed at opposite ends of the brake shoes. The assembly further includes a camshaft having a shaft disposed along a rotational axis and a cam disposed at one end of the shaft. The cam has an inboard side proximate the shaft, an outboard side distant from the shaft and a cam surface extending between the inboard and outboard sides in engagement with the cam followers. The camshaft further includes a noise reducing mass disposed on the outboard side of the cam. The mass is configured to establish a natural frequency in the cam that differs from a natural frequency of the first and second brake shoes to reduce audible noise.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
BENDIX SPICER FOUNDATION BRAKE LLC901 CLEVELAND STREET ELYRIA OH 44035

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Church, David R Richland, US 8 77
Engels, Bret Allen West Bloomfield, US 1 1
Green, Edward Ray Livonia, US 1 1

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