• US 3,710,658 A
  • Filed: 08/06/1971
  • Issued: 01/16/1973
  • Est. Priority Date: 08/06/1971
  • Status: Expired due to Term
First Claim
Patent Images

1. A wrench comprising first jaw means having first handle means extending therefrom, second jaw means connected to said first handle means for movement relative to said first jaw means, second handle means pivotally connected to said second jaw means, cam means slidably mounted within said first handle means, said cam means having a forward cam surface for locking engagement with at least a portion of said second jaw means, link means connected at opposite ends to said second handle means and a rear portion of said cam means, whereby upon closing of said jaw means upon an object by moving said first and second handle means toward each other, said link means will cause said cam means to move rearwardly within said first handle means and wedge at least a portion of said cam surface against said portion of said second jaw means and thereby cause said jaws to lockingly grip said object.

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