Patents by Inventor Bulwidas, Jr., John J.

Bulwidas, Jr., John J. 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).

  • Patent number: 4227066
    Abstract: A hand-operated remote control unit has a housing containing a rotary potentiometer whose shaft carries a pinion which is driven by a rack having a spring loaded push button attached thereto. An eccentric cam is mounted on the potentiometer shaft adjacent a microswitch in which the cam surface is in contact with the switch when the push button is in its unactuated position. When the push button is actuated, the cam rotates releasing the switch, and the rack and pinion varies the resistance of the potentiometer to vary the welding current. A plurality of hat section holders are positioned on different surfaces of the housing for mounting an adjustable ring-shaped clamp having bayonet extensions thereon which fit into the hat section holders. The adjustable ring-shaped clamp which has a set screw therein is adapted to be adjustably mounted on the handle of the welding torch. The adjustable clamp may be moved up and down to a desired position on the welding torch and the welding torch may be rotated 360.degree.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: October 7, 1980
    Inventor: Bulwidas, Jr., John J.