Cutlery – Cutting tools – Saw
Patent
1996-05-31
1998-08-18
Watts, Douglas D.
Cutlery
Cutting tools
Saw
30391, 83520, 83478, B23D 4700
Patent
active
057943516
ABSTRACT:
A window assembly is provided for use on a hand-held circular saw. The window assembly has a transparent member that is attached to an upper guard of the saw. The transparent member has a forward edge and a rearward edge and slopes downwardly to form a rearwardly facing acute angle with respect a planar base of the saw. The acute angle has a minimum value to prevent light from overhead sources from reflecting into the user's eyes and has a maximum value to prevent light from forward light sources from reflecting into the user's eyes. The forward edge of the transparent member is located rearwardly of the point at which a predetermined line intersects the guard. Additionally, a lower blade guard is provided for use on a circular saw having a clear viewing window on the upper blade guard. The lower blade guard has a truncated portion that allows a line of sight between the workpiece being sawed and the clear viewing window even when the lower guard is in a fully retracted position.
REFERENCES:
patent: 1830579 (1931-11-01), Wappat
patent: 2795248 (1957-06-01), Doerner
patent: 2876810 (1959-03-01), Petetson et al.
patent: 3662796 (1972-05-01), Batistelli
patent: 3805658 (1974-04-01), Scott et al.
patent: 3880032 (1975-04-01), Green
patent: 3990145 (1976-11-01), Rubin
patent: 4257297 (1981-03-01), Nidbella
patent: 4450627 (1984-05-01), Morimoto
patent: 4675999 (1987-06-01), Ito et al.
patent: 5046255 (1991-09-01), Lebreux
patent: 5084972 (1992-02-01), Waugh
patent: 5199343 (1993-04-01), O'Banion
patent: 5375495 (1994-12-01), Bosten et al.
Patent abstract for Patent No. 1,016,387.
Patent abstract for Patent No. 674,894.
Patent abstract for Patent No. 887,003.
Abstract for U.S. Patent No. 674,894; issue date May 17, 1950 to Roe.
Abstract for U.S. Patent No. 1,315,720; issue date Jan. 12, 1972 to Cape Universal Building Products, Ltd.
Campbell David C.
Heslop Gale A.
Black & Decker Inc.
Watts Douglas D.
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