Patents Represented by Attorney John D. Hubbard
  • Patent number: 5062711
    Abstract: The apparatus and method disclosed rely on the observation of a strip of a rotatable circular can end to be lined with gasketing composition, and the scanning head further includes a proximity detector responsive to the positioning of the can end adjacent the scanning head and connected to trigger initiation of a "scanning window" when a can end arrives concentrically in the lining chuck at the lining station, and to discontinue the "scanning window" when the can end and chuck begin to descend on departure of the can end for onward transport. The scanning operation is totally independent of time and therefore of the adjustable speed of operation of the can end lining machine.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: November 5, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Derek A. Brown, John N. Worth, Brian F. Santaniello
  • Patent number: 4988550
    Abstract: A masking tape for EMI shielding applications comprising an adhesive layer, a metal foil layer adhered to the top of the adhesive layer, two or more adhesive strips running parallel to the edges of the tape and extending the length of the foil along the strips are preferably inset from the outer edges of the foil so as to form a stepped or notch-like configuration. A mask layer is attached to the top of the strips. The mask alone or the mask and strips are designed to be removed after use. The tape is applied to a substrate such as a computer cabinet, the cabinet is then sprayed with a paint or finish coat and the mask is removed to reveal a conductive metal foil surface to which a conductive EMI shield can be mounted.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: January 29, 1991
    Assignee: Chomerics, Inc.
    Inventors: Paul Keyser, Peter Jones, John D. Hubbard
  • Patent number: 4966637
    Abstract: The present invention relates to a process of forming an electromagnetic shielding gasket by forming a core of elastomeric material, coating the core with bands of an electrically conductive textile material, passing the coating core through a die to calibrate the coated core, heating the coated core to cure the elastomeric material and winding up the cured core.
    Type: Grant
    Filed: January 10, 1989
    Date of Patent: October 30, 1990
    Assignee: Rollin, S.A.
    Inventor: Claude F. Laborie
  • Patent number: 4931479
    Abstract: An electrically conductive elastomeric foam for use in EMI/RFI shielding applications, especially as a gap filler or caulk. The foam is based upon a polyurethane system wherein the electrically conductive filler is intermixed with either the isocyanate or active hydrogen containing component before reacting the two components to create the foam. The foam is lightweight, flexible, highly conductive, capable of withstanding cyclical vibration and is capable of adhering to various conductive surfaces such as metal, composites and glass. The foam is preferably room temperature curable and consists of a water activable prepolymer or quasi prepolymer system.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: June 5, 1990
    Assignee: Chomerics, Inc.
    Inventor: Noredin H. Morgan
  • Patent number: 4927722
    Abstract: In a separator made of elastic synthetic material for starter batteries, which has a sheet thickness of approx. 0.15 to 0.35 mm and solid ribs formed integrally on both sides from the synthetic material, such that on the front side of the separator facing the positive electric plate a number of ribs is arranged, the height of which is greater than the thickness of the separator sheet, while the ribs on the rear side of the separator facing the negative electrode plate have a smaller height than the ribs on the front side, there are ribs on the rear side each arranged offset to the ribs on the front side, such that a front-side rib runs between two rear-side ribs arranged as a pair, or a rear-side rib runs between two front-side ribs arranged as a pair, such that the distance between the two ribs arranged in a pair is considerbly smaller than the distance between the adjacent groups each formed of three associated ribs.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: May 22, 1990
    Assignee: Grace G.m.b.H.
    Inventors: Werner Bohnstedt, Werner Lindenstruth
  • Patent number: 4798314
    Abstract: A seal for a longitudinally movable element such as a needle valve. The seal has an upper disc-like portion which is secured in place and a lower tubular extension. The tubular extension has an internal tapered bore such that the lower end of the bore is narrower than the upper end of the bore. The lower end of the bore intimately grips the outer surface of the longitudinally movable element and stretches and retracts with its movement.
    Type: Grant
    Filed: August 26, 1987
    Date of Patent: January 17, 1989
    Assignee: W. R. Grace & Co.
    Inventors: John N. Worth, Jorn Steffensen
  • Patent number: 4328606
    Abstract: A plurality of elongated concrete tubular vaults are arranged upright resting on closed lower ends and are interconnected in mutual lateral support, leaving auxiliary spaces between the vaults. End-opening tubular caskets are vertically disposed in the vaults and the vaults are closed by step-fitted covers. Threaded central openings in the covers of the vaults and the caskets receive ring bolts for lowering the casket into the vault and lowering the vault cover to close the vault.
    Type: Grant
    Filed: May 16, 1980
    Date of Patent: May 11, 1982
    Inventor: Abner H. Nunes