US Patent: 3,785,226
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| Locking Wrench
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Patent Dates:
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| Applied: |
May 18, 1972 |
| Granted: |
Jan. 15, 1974 |
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Patent Pictures:
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Patent 3,785,226 - edited drawing |
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Stan Schulz
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Description: |
| Abstract: "An open ended wrench having a hexagonal-headed threaded member-engaging cavity formed in the wrench head configured such that when torque is applied through the wrench to a hexagonal-headed member engaged in the cavity the wrench is effectively locked onto the member and is prevented from slipping from engagement therewith. In one form the novel aspects of this invention are applied to an otherwise conventional open ended wrench; and in another form the novel aspects of this invention are applied to a ratchet-type open ended wrench."
Two optional jaw forms present options for "ratcheting" or "non-slipping" action on hexagonal nuts. Patent no. 3,242,775 is cited as a reference.
The patent number appears on LOCKJAW wrenches sold by Tool Dynamics. |
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