Safety coupling clamp
First Claim
1. A circumferentially contractible clamp comprising, in combination, a band adapted to encircle the object to be clamped, first and second ends defined upon said band, a pivot defined on said band first end, first tension transmitting means comprising a threaded shaft mounted on said pivot, a compression pad defined on said band second end, said shaft being located adjacent said pad during clamping, a nut threaded upon said threaded shaft adapted to be operatively associated with said compression pad to tension said threaded shaft and contract said band, and second tension transmitting means connecting said nut to said band first end maintaining the spacing between said nut and said band first end as determined by the axial movement of said nut along said shaft during nut rotation to maintain the relative position of said first and second ends in the event of shaft failure.
1 Assignment
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Accused Products
Abstract
A circumferentially contractible clamp operated by a bolt and nut actuator wherein a U-shaped safety saddle pivotally mounted upon one end of the clamp band includes a threaded bore receiving a threaded stem of the nut threaded upon the bolt. The inner end of the stem is operatively associated with the band other end wherein rotation of the nut tensions the bolt and the interconnection of the nut stem and the saddle supports the nut such that the stem will maintain the band in a contracted condition even if the bolt fails.
61 Citations
12 Claims
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1. A circumferentially contractible clamp comprising, in combination, a band adapted to encircle the object to be clamped, first and second ends defined upon said band, a pivot defined on said band first end, first tension transmitting means comprising a threaded shaft mounted on said pivot, a compression pad defined on said band second end, said shaft being located adjacent said pad during clamping, a nut threaded upon said threaded shaft adapted to be operatively associated with said compression pad to tension said threaded shaft and contract said band, and second tension transmitting means connecting said nut to said band first end maintaining the spacing between said nut and said band first end as determined by the axial movement of said nut along said shaft during nut rotation to maintain the relative position of said first and second ends in the event of shaft failure.
- 2. A circumferentially contractible clamp comprising, in combination, a band adapted to encircle the object to be clamped, first and second ends defined upon said band, a pivot defined on said band first end, a threaded shaft mounted on said pivot, a compression pad defined on said band second end, said shaft being located adjacent said pad during clamping, a saddle mounted upon said first end extending adjacent said shaft during clamping and having a threaded bore, a nut having a head, a threaded bore, an elongated exteriorly threaded stem and an abutment end adjacent said stem, said nut stem being threaded into said saddle bore, said shaft being threaded into said nut bore, said stem abutment end being operatively associated with said band second end whereby rotation of said nut tensions said shaft to contract said band and maintains the relative position of said first and second ends in the event of shaft failure.
- 8. A circumferentially contractible clamp comprising, in combination, a band adapted to encircle the object to be clamped, first and second ends defined upon said band, a pivot pin mounted upon said first end, a threaded bolt pivotally mounted upon said pivot pin, a saddle pivotally mounted on said pivot pin having a threaded bore spaced from said pivot pin, a nut having an outer end having a head, an elongated exteriorly threaded stem having an inner end and a threaded bore, said nut stem being threaded into said saddle bore and said bolt being threaded into said nut bore, said stem inner end extending toward said band second end and adapted to be operatively associated with said band second end whereby rotation of said nut tensions said bolt to contract said band and maintains the relative position of said first and second ends in event of bolt failure.
Specification