Patents by Inventor Hubert J. T. Clements

Hubert J. T. Clements 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).

  • Pressure reducing valve
    Patent number: 5033499
    Abstract: A pressure reducing valve (1) is mounted directly on a high pressure (300 bar) gas cylinder (23). and handwheel (20) is opened gas is available at outlet (4) at a maximum pressure of 200 bar. When a special filling adaptor (24) is inserted in the outlet (4) the cylinder can be refilled to its maximum pressure of 300 bar. The special filling adaptor (24) has a seal (25) which inhibits gas flow from a chamber (28) via a passage (22) to the surrounding atmosphere. This, in turn, inhibits a piston (8) moving downwardly to close the inlet (3) of the pressure reducing valve (1) as would be the case in normal service.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: July 23, 1991
    Inventors: Milan N. Patel, Hubert J. T. Clements