Patents Assigned to Sealtran Corporation
  • Patent number: 4936469
    Abstract: A storage rack for small articles of all types and configurations incorporates an elongated main support bar with a multiplicity of longitudinally spaced, open top transverse slots; a multiplicity of retainer loops of tough, resilient, abrasion resistant resin such as PET are inserted in and project forwardly from the slots. The ends of the retainer loop legs are bent at right angles and held in a recess in the back of the support bar by a back member, whereas a cover over the tops of the slots precludes upward withdrawal of the retainer loops. A front ledge on the support bar, below the retainer loops, effectively narrows the space between the adjacent retainer loops; a similar ledge is preferably present above the loops.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: June 26, 1990
    Assignee: Sealtran Corporation
    Inventor: Herbert M. Drower
  • Patent number: 4570866
    Abstract: A retractor for storage of a long, flexible line includes a thin, flat, elongated strip spring member of tough, resilient, inelastic resin, preferably an oriented polyester resin such as polyethylene terephthalate, the spring having an arcuate configuration exceeding 180.degree. up to a full 360.degree.. A plurality of small pulleys mounted on the spring member project inwardly thereof at spaced locations with half of the pulleys located on each side of a centerline. The line is anchored to the spring member near one end of the centerline and extends back and forth across the centerline around each pulley to store a substantial length of the line within the spring member.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: February 18, 1986
    Assignee: Sealtran Corporation
    Inventor: Herbert M. Drower
  • Patent number: 4540612
    Abstract: An improved foldable sheet plastic construction, employed in a butterfly pouch for use in making plastic laminated data cards, and in a plastic fan-fold product, both comprising adjacent panels made from a single sheet of plastic material that must be folded along a fold line into parallel facing relation. The fold line has a two-level hinge cut. A major portion of the fold line is cut to a predetermined depth that assures easy folding but may cause separation of adjacent panels; a minor fractional portion of the fold line is cut to a substantially shallower depth to preclude separation of the panels on folding. In the preferred construction, the shallow cut is made at two or more spaced locations along the fold line to provide plural hinges.
    Type: Grant
    Filed: August 5, 1981
    Date of Patent: September 10, 1985
    Assignee: Sealtran Corporation
    Inventor: Edison L. Rhyner
  • Patent number: 4469353
    Abstract: A protective lamination film for an identification card or other document, of the kind comprising a tough, abrasion-resistant transparent polyester film coated with polyethylene or other adhesive activatable by heat and pressure, has a multiplicity of slits cut into the film in a pattern that allows the film to hold together in normal use but causes the film to tear if any post-lamination alteration is attempted; the film may be employed as an outer cover for the document, or it may comprise separate film interposed between the document and a continuous film providing an external cover.
    Type: Grant
    Filed: April 12, 1982
    Date of Patent: September 4, 1984
    Assignee: Sealtran Corporation
    Inventor: Mushtaq Anarwala
  • Patent number: 4456639
    Abstract: A transparent protective laminating film for forming a sealed protective cover on an identification card or similar document, comprising a base film of biaxially oriented thermoset polyester resin with an inner surface coating of polyethylene or other heat-and-pressure activated thermoplastic resin, has an additional outer surface layer of unoriented embossable thermoplastic polyester resin to permit embossure with a security pattern; the outer surface layer is also receptive to a signature strip formed by embossure, to a pigment signature strip or a resin-oxide magnetic strip applied by hot stamp transfer, or any combination of such strips.
    Type: Grant
    Filed: June 7, 1982
    Date of Patent: June 26, 1984
    Assignee: Sealtran Corporation
    Inventors: Herbert M. Drower, Morton Minkus
  • Patent number: 4069081
    Abstract: A method for controlling curl in laminating a protective film having a heat-softenable adhesive surface onto a relatively flexible substrate document, in which the adhesive surface of the film is heated, the film and the substrate are then passed between two pressure rolls, and the laminate thus formed is maintained in contact with the pressure roll that engages the substrate through an appreciable arcuate distance after the laminate clears the other pressure roll to control longitudinal curl. The pressure rolls engaging the substrate and the film may be of convex and concave configuration, respectively, to minimize transverse curl. Radiant heating is preferably employed, together with limited pigmentation in the adhesive portion of the film.
    Type: Grant
    Filed: August 4, 1976
    Date of Patent: January 17, 1978
    Assignee: Sealtran Corporation
    Inventors: Herbert M. Drower, Edison L. Rhyner