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US 6,105,473 AGranted
Lock device for rotatable tool driving head
OwnerLi Shiu Huanginventor
Life of this patent
Estimating the term…
Abstract
A tool includes a driving head pivotally coupled to a tool member at a pivotal coupler, and a barrel slidably engaged on the tool member and slidable to engage onto the driving head and to lock the driving head to the tool member and to prevent the driving head from rotating relative to the tool member about the pivotal coupler. The driving head may be rotated relative to the tool member about the pivotal coupler when the barrel is disengaged from the driving head. A pin is rotatably engaged through a channel of the pivotal coupler which is extended from the tool member.
Claims8
A tool comprising:
- a) a tool body including a first end,
- b) a driving head-including a first end pivotally coupled to said first end of said tool body at a pivotal coupler, and
- c) a barrel slidably engaged on said tool body and slidable to engage onto said driving head to lock said driving head to said tool body and to prevent said driving head from rotating relative to said tool body about said pivotal coupler, and said driving head being allowed to be rotated relative to said tool body about said pivotal coupler when said barrel is disengaged from said driving head.
Dependencies are inferred from the claim text.