Patents by Inventor Fred Zwicker

Fred Zwicker 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).

  • Sandblasting valving device
    Patent number: 4947589
    Abstract: An improvement in a valving device used to dispense and control a high velocity stream of abrasive granular material intrained in a fluid stream. The valving device defines a gun configuration having a handle trigger and a movable valve element pivotally mounted to the trigger and a nozzle. The valve element is a resilient member that is advanced into sealing relation with the nozzle.
    Type: Grant
    Filed: July 24, 1989
    Date of Patent: August 14, 1990
    Assignee: Truman's Inc., Ohio Corporation
    Inventor: Fred Zwicker
  • Safety retainer clip
    Patent number: 4796925
    Abstract: A safety retainer clip for use on pressure hose fittings that provides a secondary retaining device to prevent the unintentional separation of the fitting and the hose during use in high pressure applications evident in sandblasting or the like.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: January 10, 1989
    Inventor: Fred Zwicker
  • Sandblast shutoff valve
    Patent number: 4698940
    Abstract: A shutoff valve for use on sandblasting equipment wherein the valve provides a fail safe positive closure of air and sand pressure stream at the nozzle where the operator is. The sand and air pressure stream provides a positive force on the valve assisting the closure and maintaining a tight seal against air and sand infiltration to the nozzle.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: October 13, 1987
    Assignee: Truman's Inc.
    Inventor: Fred Zwicker
  • Abrasive blasting cabinet
    Patent number: D445118
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: July 17, 2001
    Assignee: Skat Blast, Inc.
    Inventors: Fred Zwicker, Robert B. Athey, Jr.
  • Sandblasting gun
    Patent number: D323607
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: February 4, 1992
    Assignee: Truman's Inc.
    Inventor: Fred Zwicker
  • Sandblasting cabinet
    Patent number: D323661
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: February 4, 1992
    Assignee: Skat Blast
    Inventor: Fred Zwicker
  • Vacuum system for collecting dust from sandblasting cabinets
    Patent number: D326543
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: May 26, 1992
    Assignee: Skat Blast, Inc.
    Inventor: Fred Zwicker
  • Air turbine spray device
    Patent number: D368103
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: March 19, 1996
    Assignee: Truman's Inc.
    Inventor: Fred Zwicker
  • Air turbine spray device
    Patent number: D370490
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: June 4, 1996
    Assignee: Truman's, Inc.
    Inventor: Fred Zwicker
  • Soda bar
    Patent number: D417981
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: December 28, 1999
    Inventor: Fred Zwicker