Corner undercut jamb saw

Cutting – Rotatable disc tool pair or tool and carrier – Carrier for rotatable tool movable during cutting

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83485, 83489, 83743, 30290, 30371, 30388, 30391, B23D 1900

Patent

active

059670134

ABSTRACT:
A powered circular saw blade on a vertical shaft is supported on a slide which is slideably mounted on a guideway having feet to enable moving the assembly around on a building sub-floor. The feet are adjustable to enable raising or lowering the guideway base and, thereby, the saw blade. A blade guard is affixed to the guideway base and shaped to admit the saw assembly to an inside corner of a building room. The blade is normally retracted behind the blade guard but can be advanced to position ahead of the guard as the guard is braced against a door jamb or the like and the slide is pushed toward the door jamb to advance the blade into cutting position. Immediately upon release of the advancing force manually applied, a return spring returns the blade to retracted protected position.

REFERENCES:
patent: 2610658 (1952-09-01), Koeling
patent: 3111969 (1963-11-01), Bivens
patent: 4510835 (1985-04-01), Cromeens
patent: 4858662 (1989-08-01), Bosten et al.
patent: 4876793 (1989-10-01), Quagli
patent: 5257654 (1993-11-01), Bean et al.
patent: 5657804 (1997-08-01), Lee
patent: 5784789 (1998-07-01), Vargas
Brochure entitled "Janser Laminate Installation Tools", by Janser, 200 Paw Paw Avenue, Benton Harbor, MI 49022-3400.
Magazine entitled "Floor Covering Installer/Summer 1997", p. 44.

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