Patents by Inventor Alan W. Briggs

Alan W. Briggs has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Pendulum jigsaws
    Patent number: 5205043
    Abstract: FIG. 2 shows a jigsaw in which pendulum motion in imparted on the blade (24) (see FIG. 1) by a bell crank lever (28) mounting a support wheel (26). The lever (28) is actuated by pin (34) passing through adjustment shaft (36). The pin (34) is actuated by fork lever (42) journalled around circular cam surface (48) and pivoted on axis (44). Cam surface (48) is eccentrically mounted on gear shaft axis (10). Rotational adjustment of shaft (36), which changes amplitude of reciprocation of pin (34) responsive to fork lever cam surface (54) is effected by pin (60) passing through shaft (36) and pivotally mounted in slide switch (70). Arrangement allows for compact design of saw.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: April 27, 1993
    Assignee: Black & Decker Inc.
    Inventors: Dennis M. Batt, Alan W. Briggs