Portable circular saw

Details Portable circular saw Portable circular saw

2006-06-26

2009-06-23

Payer, Hwei-Siu C (Department: 3724)

Cutlery

Cutting tools

Saw

C030S391000

Reexamination Certificate

active

07549229

ABSTRACT:
It is an object of the invention to provide an effective technique to improve ease of use in adjustment of the bevel angle of a circular saw body of a circular saw. The representative portable circular saw that includes a base, a circular blade, a circular saw body, a pivot, a locking device and a restricting arrangement. The locking device is manually operated by a user to lock the circular saw body to the base in a desired bevel angle position. Besides the locking device, the restricting arrangement prevents free pivotal movement of the circular saw body by holding the circular saw body at a predetermined common bevel angle position. In order to cope with cutting operations both at any desired bevel angle and at the predetermined common bevel angle, the engaging member can be selectively moved between the restricted position in which the engaging member is allowed to contact the engagement portion for allowing the common bevel angle setting and an unrestricted position in which the engaging member is not allowed to contact the engagement portion for allowing the free bevel angle setting by the user without being interfered by the common bevel angle setting arrangement.

REFERENCES:
patent: 3292673 (1966-12-01), Gregory
patent: 5452515 (1995-09-01), Schilling
patent: 6202311 (2001-03-01), Nickels, Jr.
patent: 6601305 (2003-08-01), Fukuoka
patent: 6681493 (2004-01-01), Mori et al.
patent: 7290342 (2007-11-01), Hartmann et al.
patent: 2003/0131484 (2003-07-01), Yoshida et al.
patent: 2005/0000338 (2005-01-01), Wascow
patent: 2008/0115371 (2008-05-01), Allen et al.

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