Patents by Inventor John P. Fitzpatrick

John P. Fitzpatrick 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: 7069824
    Abstract: A leverage handle tool includes a handle and a seat block. In use, a slot in the seat block is located upon a handle such as a vice handle, and the tool is pulled toward the handle end. As the tool is pulled toward the handle end the slot grips the handle due to the frusto-conical configuration thereof. The tool may then be acted upon such that the tool increase the leverage upon handle.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: July 4, 2006
    Assignee: Snap Jaws Manufacturing
    Inventor: John P. Fitzpatrick
  • Patent number: 6345816
    Abstract: An improved hydraulic vise jaw incorporates a fluid supply which communicates hydraulic fluid to an area behind a plurality of pistons such that the pistons are held outwardly against a part with a generally uniform force. Each piston is positioned in a piston cylinder. The piston cylinders are arranged in several columns and a supply passage connects each of the piston cylinders in an upper row and a second supply passage connects each of the piston cylinders in a lower row. A communication hole selectively connects a first piston cylinder in the top row with a second piston cylinder in the bottom row. Preferably, the communication hole connects piston cylinders which are in distinct columns. In this way, the flow of hydraulic fluid between the rows is somewhat restricted such that an equal and adequate holding force is maintained on the pistons. In another feature, a pin selectively holds the pistons within the piston cylinders such that they are prevented from moving outwardly of the body.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: February 12, 2002
    Assignee: Snap Jaws Manufacturing Co.
    Inventor: John P. Fitzpatrick
  • Patent number: 5078372
    Abstract: An improved vise jaw is disclosed that can be quickly mounted upon a standard vise to facilitate efficient assembly of a machining run. The vise jaw comprises a T-shaped slot at an attachment face for receiving a mounting bolt from the vise. An access opening extends forwardly to a clamping face allowing access of a tool for tightening the bolt within the T-shaped opening to secure the vise jaw to the vise. A chip shield is disclosed that extends between opposed vise jaws to cover a screw threaded member that moves the clamping plates with respect to each other. The chip shield prevents machining waste from reaching the screw threaded member and saves a large amount of time in required clean-up after machining operation.
    Type: Grant
    Filed: September 27, 1990
    Date of Patent: January 7, 1992
    Inventor: John P. Fitzpatrick
  • Patent number: 4960270
    Abstract: An improved vise jaw is disclosed that can be quickly mounted upon a standard vise to facilitate efficient assembly of a machining run. The vise jaw comprises a T-shaped slot at an attachment face for receiving a mounting bolt from the vise. An access opening extends forwardly to a clamping face allowing access of a tool for tightening the bolt within the T-shaped opening to secure the vise jaw to the vise. A chip shield is disclosed that extends between opposed vise jaws to cover a screw threaded member that moves the clamping plates with respect to each other. The chip shield prevents machining waste from reaching the screw threaded member and saves a large amount of time in required clean-up after a machining operation.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: October 2, 1990
    Inventor: John P. Fitzpatrick