Patents Assigned to Daniel A. Holt
  • Adaptor for engaging a gas pressure source to a gas port
    Patent number: 5979496
    Abstract: A single piece housing with a floating gas sealing member in a gas communication channel between the two ends of the housing, for joining a high pressure gas port to a second gas port in gas sealing relation.
    Type: Grant
    Filed: January 2, 1998
    Date of Patent: November 9, 1999
    Assignee: Daniel A. Holt
    Inventor: Trevor K. Markham
  • Fluid pressure regulator
    Patent number: 5522421
    Abstract: A fluid pressure regulator capable of adjustably setting a cut-off pressure between an upper and a lower limit having a two-piece valve body where the two pieces are threadably joined such that adjusting the distance between the two pieces of the valve body moves a piston stem valve operating a high pressure port towards or away from the high pressure port while not changing the distance between the spring engaging the piston and the piston head.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: June 4, 1996
    Assignee: Daniel A. Holt
    Inventors: Daniel A. Holt, Trevor K. Markham
  • Fluid pressure regulator
    Patent number: 5411053
    Abstract: A fluid pressure regulator capable of adjustably setting a cut-off pressure between an upper and a lower limit having a two-piece valve body where the two pieces are threadably joined such that adjusting the distance between the two pieces of the valve body moves a piston stem valve operating a high pressure port towards or away from the high pressure port while not changing the distance between the spring engaging the piston and the piston head.
    Type: Grant
    Filed: July 1, 1994
    Date of Patent: May 2, 1995
    Assignee: Daniel A. Holt
    Inventors: Trevor K. Markham, Daniel A. Holt