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Battery powered portable saw

  • US 4,555,849 A
  • Filed: 06/14/1983
  • Issued: 12/03/1985
  • Est. Priority Date: 06/21/1982
  • Status: Expired due to Term
First Claim
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1. A battery powered portable electric circular saw having improved balance, comprising:

  • a housing having a generally vertical end wall defining a parallel saw blade compartment on one side thereof and a saw blade drive spindle rotatably supported to extend through said vertical wall;

    a battery chamber and a motor chamber defined in said housing on the other side of said vertical end wall, an electric motor in said motor chamber having its output shaft generally perpendicular to said vertical end wall, with the center of said shaft being forward and above the center of said drive spindle in relation to the advancing direction of the saw blade;

    gear reduction means drivingly interconnecting said motor output shaft and said drive spindle;

    said battery chamber and said motor chamber lying side-by-side and generally in alignment with each other so as to be mutually parallel and perpendicular to said vertical end wall so as to achieve balance of weight between the front and rear of said saw, with the front-to-back center of gravity being slightly to the rear of said saw blade drive spindle;

    a base for contacting the material to be cut and pivot means comprising a pin and a round holder for vertical movement of the saw relative to the base to adjust the depth of the saw cut, said pivot means being located forward of the saw blade in relation to the advancing direction of the saw blade; and

    an inverted C-shaped handle mounted above and bridging over said battery chamber and said motor chamber, said handle having an elongated top grip lying generally parallel to the cutting direction of the saw.

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