Hand tool having an adjustable head with joint lock mechanism

Details Hand tool having an adjustable head with joint lock mechanism Hand tool having an adjustable head with joint lock mechanism

2006-11-07

2006-11-07

Shakeri, Hadi (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Attachment, or including adjunct or replaceable portion

C081S177900

Reexamination Certificate

active

07131356

ABSTRACT:
A hand tool having an adjustable head with a joint lock mechanism. The joint lock mechanism includes a first engaging device, a second engaging device, a pull button and a first elastic device. The pull button has a knob portion and an engaging portion beneath the knob portion and the engaging portion engages the second engaging device. The first elastic device is received in a first aperture and abuts against the second engaging device with a forward force such that the front end of the second engaging device is pushed to engage the first engaging device.

REFERENCES:
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patent: 1144907 (1915-06-01), Knipple
patent: 1615169 (1927-01-01), Ellis
patent: 2705897 (1955-04-01), Kentish
patent: 4333366 (1982-06-01), Hurtig
patent: 6295898 (2001-10-01), Hsieh
patent: 6405620 (2002-06-01), Liao
patent: 6405621 (2002-06-01), Krivec et al.
patent: 2001/0000092 (2001-04-01), Jarvis
patent: 0 377 777 (1990-07-01), None
patent: 273914 (1927-07-01), None
patent: 0088220940A01 (2001-10-01), None

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