Patents Assigned to Perma Pure Products, Inc.
  • Patent number: 4808201
    Abstract: A method and apparatus for sealing and affixing connectors to membrane tubing reinforced by braided netting and used for drying of fluids employs mechanical fusion of the material of the braid or of an overlay formed of thermoplastic material (or a combustion of both) to produce the mechanical seal between the tubing and a connector. The seal includes an inner tubular insert (which may be formed of stainless steel, ceramic, or glass). The insert is placed in the end of the drying tube. The connector is fused to the tube by applying high temperature and pressure to the area of the tubing over the insert. This causes fusion of either the braiding material itself or fusion of a thermoplastic overlay placed over the end of the tubing surrounding the insert.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: February 28, 1989
    Assignee: Perma Pure Products, Inc.
    Inventor: Jack Kertzman
  • Patent number: 4705543
    Abstract: A fluid dryer includes a section of tubing covered by a braided netting. The tubing is formed of a material which has selective and reversible water-absorption properties. The braided netting may be composed of electrical resistance wire, metallic wire, plastic monofilament, etc. Several dryers using the braided tubing employ a dessicant bed and multiple sections of braided tubing.
    Type: Grant
    Filed: September 19, 1986
    Date of Patent: November 10, 1987
    Assignee: Perma Pure Products, Inc.
    Inventor: Jack Kertzman