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US 2006/0231709 A1Published application
Expansion bolt
OwnerKarl Guthrie, Joseph Schwartzinventors
Life of this patent
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Abstract
An expansion bolt. A first chock has first and second outer ramping surfaces. A second chock has an inner ramping surface complementarily corresponding to the first outer ramping surface. A spring member biases the second chock radially inwardly against the first outer ramping surface of the first chock.
Claims1
An expansion bolt for releasably gripping a hole surface, comprising:
- a cable;
- a first chock connected to a first end of said cable;
- a second chock for cooperation with said first chock such that relative translation of said first and second chocks in a first direction causes said first and second chocks to slidingly assume relative positions corresponding to an expanded configuration of the expansion bolt that grips the hole surface;
- and
- a cleaning bushing slidingly connected to said cable and adapted, in response to application of an impact force to said cleaning bushing, for transmitting a relative force to one of said first and second chocks that results in a relative translation of said first and second chocks in a second direction opposite said first direction, to release said grip.
2 more elements
Dependencies are inferred from the claim text.