Patents by Inventor Rickard N. Crewes

Rickard N. Crewes 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: 4413645
    Abstract: A swivel valve assembly (10) for an inflatable member (M) permitting passage of a high velocity input of fluid from a pressurized source and providing sealing closure upon pressure equalization including a body (11,12) having a connector (13) for sealing engagement with the inflatable member, a bore (27) in the body communicating with the pressurized source of fluid, a passage (51) in said body communicating with the inflatable member and connecting with the bore, and a movable poppet (55) operative with a sealing member (60) for precluding fluid flow upon pressure equalization and having a disk (66) positioned in the bore for throttling the high velocity input of fluid before passing the sealing member.
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: November 8, 1983
    Assignee: National Machine Company, Inc.
    Inventors: Peter P. Seabase, Rickard N. Crewes