Patents by Inventor Fred W. Trebes

Fred W. Trebes 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).

  • Safe high pressure instrument valve
    Patent number: 4623120
    Abstract: A globe valve having a main body, a bonnet, and a stem is provided with a mechanism that prevents the bonnet from being inadvertently backed off the main body. The mechanism includes a lock held to the body so that the lock is incapable of rotating as the stem is rotated, and means for releasably engaging the bonnet to the lock. For example, the lock can have a plurality of teeth that engage corresponding teeth on the bonnet. A locking ring can be used to hold the stem in the bonnet.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: November 18, 1986
    Assignee: Air Dry Corporation of America
    Inventors: Francis Leighton, Fred W. Trebes
  • Safe high pressure instrument valve
    Patent number: 4519580
    Abstract: A safe high pressure instrument valve comprising a body, a bonnet and stem wherein the stem cannot be inadvertently removed from the bonnet and the bonnet cannot be inadvertently removed from the body. An expanded portion of the stem is removably captured in the bonnet to ensure that the stem remains in the bonnet during operation. A locking means comprising a lock nonrotatably attached to the bonnet, a locking element nonrotatably attached to the body and a means for releasable engaging the lock to the locking element ensures that the bonnet will not be inadvertently removed from the body during operation.
    Type: Grant
    Filed: May 15, 1984
    Date of Patent: May 28, 1985
    Assignee: Air Dry Corporation
    Inventors: Francis Leighton, Fred W. Trebes