Patents by Inventor David C. Waschke

David C. Waschke 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: 4161643
    Abstract: An auxiliary handle attached to a main handle of a welding apparatus by means of a circumferential clamp which permits adjustment rotationally and pivotally of the auxiliary handle. A radiation and contact shield, made of a single piece of heat insulating flexible material, is attached to the auxiliary handle so as to provide a forward radiation shield to protect the user's hand from heat generated at the weld area, and a contact insulating portion which permits the user to place the heel of his hand against the work piece being welded, while protecting the user's hand from the heat of the work piece itself.
    Type: Grant
    Filed: October 28, 1977
    Date of Patent: July 17, 1979
    Inventors: Timothy J. Martin, Jr., David C. Waschke
  • Patent number: 4127216
    Abstract: A venting closure assembly extending across an access opening on the top part of a tank, particularly a milk tank. There is a venting closure member having perimeter flange members which fit against a support ring of the milk tank to form one or more circumferential venting channels. A cover having a vent opening fits over the closure member and engages the peripheral portions thereof to form a circumferential seal against the support ring. The venting channel or channels connect to circumferentially spaced openings on the flanges to provide venting from inside the tank to the area outside the tank, while preventing both spilling of the milk and contamination from outside sources.
    Type: Grant
    Filed: January 3, 1978
    Date of Patent: November 28, 1978
    Assignee: Light Industrial Design Co., Inc.
    Inventors: Timothy J. Martin, Jr., David C. Waschke
  • Patent number: 4081107
    Abstract: A venting closure assembly extending across an access opening on the top part of a milk tank. There is a venting closure member having perimeter flange members which fit against a support ring of the milk tank to form one or more circumferential venting channels. A cover having a vent opening fits over the closure member and engages the peripheral portions thereof to form a circumferential seal against the support ring. The venting channel or channels connect to circumferentially spaced openings on the flanges to provide venting from inside the tank to the area outside the tank, while preventing both spilling of the milk and contamination from outside sources.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: March 28, 1978
    Assignee: Light Industrial Design Co., Inc.
    Inventors: Timothy J. Martin, Jr., David C. Waschke