Patents by Inventor David N. Hawkins

David N. Hawkins has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7727350
    Abstract: Articles (12) made by winding of filamentary material (11), such as yarn and thread, are especially suitable for providing brushes and pile weatherstripping. In order to enable the yarn (11) to be unwound and payed out of spools (24) disposed in a stationary or static array, the yarn is fed from the spools (24) through a rotating spindle (30). A frame (14) located at the beginning of the path and may be provided by laterally spaced pairs of wire (52) which travel around posts (36) provided by rollers on a stationary bracket (38). In order to support the bracket (38) and the frame (14), a shaft (28) reciprocates a pair of support rods (100, 102) in synchronism with the rotation of the spindle (30). Bindings (60, 62) are applied to the ends of the loops (54) as they leave the winding station (14). Slitters (20) divide the loops (54).
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: June 1, 2010
    Assignee: Ultrafab, Inc.
    Inventors: David N. Hawkins, Grant E. Wylie
  • Publication number: 20080105364
    Abstract: Articles (12) made by winding of filamentary material (11), such as yarn and thread, are especially suitable for providing brushes and pile weatherstripping. In order to enable the yarn (11) to be unwound and payed out of spools (24) disposed in a stationary or static array, the yarn is fed from the spools (24) through a rotating spindle (30). A frame (14) located at the beginning of the path and may be provided by laterally spaced pairs of wire (52) which travel around posts (36) provided by rollers on a stationary bracket (38). In order to support the bracket (38) and the frame (14), a shaft (28) reciprocates a pair of support rods (100, 102) in synchronism with the rotation of the spindle (30). Bindings (60, 62) are applied to the ends of the loops (54) as they leave the winding station (14). Slitters (20) divide the loops (54).
    Type: Application
    Filed: December 17, 2004
    Publication date: May 8, 2008
    Inventors: David N. Hawkins, Grant E. Wylie
  • Patent number: 6711858
    Abstract: Pile weatherstripping is provided by a flat pile of strands which are tensioned to spring outwardly to straight condition to provide a pile weatherstrip, when bent and inserted into a T-slot or other kerf in a member such as a window or door frame or sash. The tendency of the bent parts of the pile to spring away from each other facilitates retention of the pile after insertion into the slot. A locking fin, more rigid than the pile, is preferably used. This locking fin engages steps or edges in the throat of the slot thereby impeding withdrawal of the weatherstripping from the slot. One or more barrier fins may also be assembled with the strands constituting the flat pile. The pile can be operated in bending mode or in columnar compression (crushing mode). Bending mode operation can be over a bending range so as to accommodate a large range of clearance between a sash and a frame or other members which are sealed by the pile weatherstripping.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: March 30, 2004
    Assignee: Ultrafab, Inc.
    Inventors: James V. Albanese, David N. Hawkins
  • Patent number: 3995951
    Abstract: A sheet feeding apparatus and process wherein a movable member having a sheet receiving surface on its outer periphery includes a cavity. A supply of sheet material is supported within the cavity and feeding means are provided for feeding the sheet material outwardly from the cavity for application to the surface of the movable member. Preferably the sheet receiving surface comprises an electrostatic imaging surface. The process and apparatus may be applied to reproducing machines and processes for forming images on a single side of a sheet; on both sides of a sheet in a single pass; or for forming plural images in superimposed registration on a sheet.
    Type: Grant
    Filed: March 26, 1975
    Date of Patent: December 7, 1976
    Assignee: Xerox Corporation
    Inventors: David N. Hawkins, Thomas Acquaviva