B - Operations – Transporting – 27 – B
Patent
B - Operations, Transporting
27
B
B27B 9/00 (2006.01) B23D 59/00 (2006.01) B27G 19/04 (2006.01)
Patent
CA 2204080
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.
La présente invention vise un regard à glace pour scie circulaire manuelle. Le regard comporte un élément transparent fixé au protège-lame supérieur. L'élément transparent comporte un bord avant et un bord arrière et est monté en pente descendante de manière à former un angle aigu vers l'arrière par rapport à la base plane de la scie, très peu prononcé cependant pour que l'utilisateur de la scie ne soit pas ébloui par la lumière provenant de sources lumineuses situées en avant de lui. Le bord avant de l'élément transparent se situe derrière un point d'intersection entre une ligne prédéterminée et le protège-lame. Un protège-lame inférieur est prévu dans le cas d'une scie à regard à glace monté sur le protège-lame supérieur. Le protège-lame inférieur comporte une portion tronquée qui définit une ligne de vision entre la pièce à scier et le regard, même lorsqu'il est en position entièrement retirée.
Campbell David C.
Heslop Gale A.
Black & Decker Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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