Patents Assigned to Helix Technology Corporation
  • Cryogenic apparatus having means to coordinate displacer motion with fluid control means regardless of the direction of rotation of the drive shaft
    Patent number: 4180984
    Abstract: In a cryogenic apparatus wherein the refrigerator has a reciprocable displacer which must be coordinated with fluid control means, such as a rotary valve, to control the inlet and exhausting of high and low pressure fluid, respectively, to produce cooling, an improvement is disclosed comprising including means for providing proper coordination between displacer movement and fluid control means regardless of the direction in which the motor drive shaft is rotated.
    Type: Grant
    Filed: December 30, 1977
    Date of Patent: January 1, 1980
    Assignee: Helix Technology Corporation
    Inventor: Fred F. Chellis
  • Cold neutron radiographic apparatus and method
    Patent number: 4134016
    Abstract: An improved cold neutron radiographic apparatus and method are disclosed wherein neutron temperature is matched to the specific material to be examined. This can be done, in one embodiment, by placing a radioactive source of neutrons, such as californium 252, in a moderator such as solid methane and using a cryogenic refrigeration system to cool the moderator to any pre-selected cryogenic temperature.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: January 9, 1979
    Assignee: Helix Technology Corporation
    Inventor: John E. Larsen
  • Filter bed assembly
    Patent number: 4048073
    Abstract: A filter-bed assembly comprises two adjacent beds each including adsorbent materials held between perforate sheets. The perforate sheets form the sides of the beds and have upstanding pleats therein to add rigidity thereto and to serve as spacers between the beds. Some of the pleats extend into the adsorbent material, and others of the pleats extend away from the adsorbent material toward the adjacent bed.
    Type: Grant
    Filed: March 1, 1976
    Date of Patent: September 13, 1977
    Assignee: Helix Technology Corporation
    Inventor: Lawrence J. Rose