| 摘要 |
A strap-type wrench for use in removing rotatable closures is disclosed which has two rings to assist in removing the slack in the gripping strap, and a pressure plate with a frictional gripping surface positioned on the wrench to allow the frictional gripping surface to be forced radially inwardly against the object being gripped by the wrench, thereby enhancing the frictional grip of the frictional gripping surface on the object. The rings may be sequentially pulled to first tighten the gripping strap by pulling the first ring and then to pull the slack portion of the gripping strap gathered by the first ring with the second ring in a path which will resist loosening due to frictional restraint of a portion of the gripping strap located between the wrench handle and itself. The pressure plate is rotatably mounted onto the wrench handle at the end opposite the frictional gripping surface, and in use is rotatable into a position in which the end of the wrench handle is bearing against the end of the pressure plate on which the frictional gripping surface is located with an essentially radially inwardly directed force toward the article being gripped.
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