Ratchet wrench having a pivotal head

Details Ratchet wrench having a pivotal head Ratchet wrench having a pivotal head

2005-05-03

2005-05-03

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

C081S177700, C081S177900

Reexamination Certificate

active

06886429

ABSTRACT:
The present invention relates to a ratchet wrench having a pivotal head, which generally includes a handle, an elastic plate, an elastic block and a pivotal head. Wherein the handle is defined with a slot at an end thereof, the elastic block is defined at an end thereof with an engaging portion, and at another end thereof is formed with a notch for the reception of the elastic plate. With the help of the elastic plate, the elastic block is movably received in the slot of the handle of the ratchet wrench. At end of the pivotal head is formed with a coupling portion which is to be received in the slot of the handle, so as to engage with the engaging portion of the elastic block. By such arrangements, the ratchet head of the wrench can change the operational angle relative to the handle, so as to improve the applicability of the ratchet wrench.

REFERENCES:
patent: 2028561 (1936-01-01), Pilger
patent: 6000302 (1999-12-01), Chiang
patent: 6216567 (2001-04-01), Hu
patent: 6295898 (2001-10-01), Hsieh
patent: 6386075 (2002-05-01), Shiao
patent: 6745650 (2004-06-01), Chang

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