Patents by Inventor Allan D. Tooth

Allan D. Tooth 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).

  • Low noise flow control valve
    Patent number: 4632359
    Abstract: A fluid control valve assembly having a threaded bore within which is located a spool having an end bluff surface and a threaded peripheral surface, the valve has a body with an entry passage communicating with a tapered chamber which delivers fluid to the bore by means of cage passages, said chamber, cage passages and bore all being tuned to frequencies well above the range of the human ear.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: December 30, 1986
    Assignee: International Combustion Australia Limited
    Inventor: Allan D. Tooth