Patents by Inventor William R. Dahlgren

William R. Dahlgren 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: 11065946
    Abstract: A utility vehicle half door includes a unitary molded plastic body that is symmetrical and identical on both a first surface and second surface. Hinge knuckles are integral with the unitary molded plastic body for hinged mounting to the left or right side of a utility vehicle. An interior panel subassembly with the door release handle and door latch may be attached to one of the first and second surfaces.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: July 20, 2021
    Assignee: Deere & Company
    Inventors: William R. Dahlgren, Krishna Deshma
  • Publication number: 20210162842
    Abstract: A utility vehicle half door includes a unitary molded plastic body that is symmetrical and identical on both a first surface and second surface. Hinge knuckles are integral with the unitary molded plastic body for hinged mounting to the left or right side of a utility vehicle. An interior panel subassembly with the door release handle and door latch may be attached to one of the first and second surfaces.
    Type: Application
    Filed: December 3, 2019
    Publication date: June 3, 2021
    Inventors: WILLIAM R. DAHLGREN, KRISHNA DESHMA
  • Patent number: 5302107
    Abstract: An elongate flexible vacuum tube including an inner porous liner of intertwined flexible fibers of nylon or the like connectable between a vacuum source and the interior of a flexible vacuum bag covering a part formed of uncured thermosetting resin, or of superposed sections or laminae with thermosetting adhesive therebetween, under an overlying porous breather pad of intertwined fibers. An end of the liner can be positioned in intimate contact with the breather pad to form a vacuum path therewith so that a vacuum can be pulled on the part from a vacuum source, through the porous liner and breather pad, while it is being cured in an autoclave.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: April 12, 1994
    Assignee: Airtech International Inc.
    Inventor: William R. Dahlgren
  • Patent number: 5261993
    Abstract: A resilient pad of intertwined nylon fibers of minute cross-sectional diameter having minute interstices throughout. The pad serves as a breather for the curing of a part of composite resinous material for which purpose it is placed over the part, which part is, in turn, fitted onto a shaped tool. To effectuate curing of the part, the part and breather pad are covered by a vacuum bag which is, in turn, sealed around its edges to the shaped tool and provided with a vacuum outlet. The whole assembly is then placed in an autoclave, wherein it is subjected to heat and pressure while vacuum is applied to the vacuum bag to evacuate air and volatile effluents from the part through the breather pad while the part is being cured under the influence of heat and pressure.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: November 16, 1993
    Assignee: Airtech International Inc.
    Inventor: William R. Dahlgren