SAFETY RELEASE
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United States of America Patent
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N/A
Issued Date -
Nov 21, 2013
app pub date -
Feb 22, 2013
filing date -
May 16, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A safety release for a clamping brake mechanism in which the clamping force increases with increasing loads and the force required to release the clamping brake also increases. The safety release comprises a fixed housing, a cable release coupled to the housing, a pivot link coupling an end of said cable release and constrained to pivot through a predetermined arc. A release rod is coupled to an end of the pivot link remote from the release lever, and a compression spring extends between the end of said pivot link and the release rod, such that the spring will compress in the event the force to move the release rod exceeds the spring constant. This compresses the spring and prevents the release rod from moving to release the clamping brake. The compression spring, in one embodiment, comprises a plurality of stacked Belleville washers.
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