Table-mounted circular saw
OwnerDieter Kaltenbachinventor
Life of this patent
Estimating the term…
Abstract
A support has portions which define a working plane and an arm is pivotally mounted on this support at one end, and carries a circular saw blade which can be moved toward and away from the working plane as the arm is pivoted. Cooperating mechanical elements are provided on the arm and on the support and are power-driven so as to pivot the arm with the blade towards and away from the working plane. These mechanical elements may be rack and pinion constructions or they may be screw spindle and spindle-nut constructions.
Claims23
A table-mounted circular saw, comprising stationary support means having portions which define a working plane;
- an arm pivotably mounted on said stationary support means and having an end portion which is movable towards and away from said working plane;
- a circular saw blade rotatably mounted on said arm for movement therewith;
- displacement means for positively pivoting said arm, comprising two mechanical elements interengaging and movable relative to one another, one of said elements being screw spindle means oriented lengthwise of the direction of relative movement and the other element being spindle nut means meshing with said screw spindle means, said screw spindle means and said spindle nut means connected to said support means and said end portion of said arm, respectively, and constituting the only means for pivoting said arm with said circular saw blade relative said support means;
- and drive means rotating one of said mechanical elements with reference to the other mechanical element.
A table mounted circular saw, comprising stationary support means having portions which define a working plane;
- an arm pivotally mounted on said stationary support means and having an end portion which is movable towards and away from said working plane;
- a circular saw blade rotatably mounted on said arm for movement therewith;
- displacement means for positively pivoting said arm, comprising two mechanical elements interengaging and movable relative to one another, one of said elements being a rotary screw spindle oriented lengthwise of the direction of the relative movement and pivotally mounted on said arm, and the other element being a non-rotatable spindle nut meshing with said screw spindle and mounted on said support means, said spindle nut includes an elongated hollow coaxial member into and out of which said screw spindle is adapted to move so as to protect said screw spindle from contamination by a material removed by sawing;
- and drive means rotating said screw spindle relative to said spindle nut.
Dependencies are inferred from the claim text.