Pre-engineered failure link for brush shaft

Details Pre-engineered failure link for brush shaft Pre-engineered failure link for brush shaft

1996-03-29

2000-03-28

Kim, Harry C.

Joints and connections

Including frangible component

403 41, 403305, F16B 700

Patent

active

060422920

ABSTRACT:
A sacrificial link is disclosed for the shaft of a vehicle-cleaning brush unit, which link is pre-engineered to fail prior to the remainder of the shaft in response to bending forces exerted on the brush by a vehicle, for example. The shaft itself is therefore protected from permanent deformation or breakage, while the sacrificial link is easily removed and replaced with relatively little downtime and expense. In a preferred form the sacrificial link comprises a sacrificial shaft section having socket ends for removable connection to the upper portion of a brush shaft depending from a motor drive unit and the lower portion of the brush shaft connected to the brush, and a center region pre-engineered to fail before the upper and lower brush shaft sections. Novel clamping and release structure associated with the socket ends of the sacrificial shaft section is also disclosed.

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