Hand tool with a swinging structure

Details Hand tool with a swinging structure Hand tool with a swinging structure

2007-02-13

2007-02-13

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

C081S177700, C081S177800, C403S093000

Reexamination Certificate

active

11416228

ABSTRACT:
A hand tool with a swinging structure, including a head section, a handle connected with the head section via at least one swinging joint and a shift button and a resilient unit disposed at the swinging joint. The swinging joint is composed of a first pivot end and a second pivot end pivotally connected with each other. The second pivot end includes a first and a second lugs and a base section connected therebetween. A stopper section is disposed on the base section. A stopper block is formed on an inner face of the shift button. The shift button is transversely and back and forth movably positioned between the two pivot ends. The resilient unit serves to resiliently push the shift button toward the first pivot end, whereby a front end of the shift button keeps engaged with the first pivot end. When the shift button is transversely shifted to a disengaged position, the stopper section will not interfere with the stopper block, permitting the swinging joint to swing. When the shift button is shifted to an engaged position, the stopper block is stopped by the stopper section to prevent the shift button from moving rearward so as to fix the swinging joint at a certain angle.

REFERENCES:
patent: 4711145 (1987-12-01), Inoue
patent: 4901608 (1990-02-01), Shieh
patent: 5199335 (1993-04-01), Arnold et al.
patent: 6000302 (1999-12-01), Chiang
patent: 6216567 (2001-04-01), Hu
patent: 6220125 (2001-04-01), Lan
patent: 6848345 (2005-02-01), Lin
patent: 6857341 (2005-02-01), Cheng
patent: 7000507 (2006-02-01), Lin
patent: 7036403 (2006-05-01), Lin
patent: 7051625 (2006-05-01), Lee

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