×

CIRCULAR SAW WITH IMPROVED MOVABLE GUARD CONSTRUCTION

  • US 3,730,239 A
  • Filed: 12/10/1971
  • Issued: 05/01/1973
  • Est. Priority Date: 12/10/1971
  • Status: Expired due to Term
First Claim
Patent Images

1. In a portable, power operated circular saw of the type having a powered blade mounting shaft and a frame including a fixed blade guard adapted to enclose the teeth on the upper portion of a circular blade mounted on said shaft, a base plate having an elongated slot for receiving a portion of the circular blade therethrough, pivot means securing said base plate to said frame adjaCent the leading end of the former for pivoting movement about an axis parallel with the axis of rotation of said shaft back and forth between a normal position and an inclined position, and adjustment means for securing said base plate in said positions and in any location therebetween, the improvement comprising:

  • a. a first abutment formation on said base plate adjacent the trailing end of said slot;

    b. a lower blade guard mounted on said frame for swinging movement back and forth between a closed position and an open position, which lower blade guard in the closed position thereof cooperates with said upper blade guard to enclose substantially all of the teeth on the blade; and

    c. said lower blade guard having a work engaging forward end and a second abutment formation thereon which is adjacent said forward end, said second abutment formation being brought into abutting engagement with said first abutment formation upon movement of said lower blade guard from the closed position thereof toward the open position thereof whereby the lower blade guard exposes only the blade teeth which extend through said slot and beneath said base plate irrespective of the location of the base plate between said positions thereof.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×