Patents by Inventor Sylvan J. Frommelt

Sylvan J. Frommelt 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).

  • Dockboard seal
    Patent number: 4422199
    Abstract: A flexible seal for use in adjustable dockboard unit for sealing the unit against the flow of air therethrough into and/or out of the building in which the dockboard is being used.
    Type: Grant
    Filed: October 9, 1981
    Date of Patent: December 27, 1983
    Assignee: Frommelt Industries, Inc.
    Inventor: Sylvan J. Frommelt
  • Loading dock shelters
    Patent number: 4381631
    Abstract: A loading dock shelter for use around a doorway on wall, includes a flexible head cover panel, having top, bottom and side edges. Two sleeves, each sleeve secured to opposite side edges of the head panel to an intermediate area between the top and bottom edges, slidably receive two flexible elastic straps respectively. One end of each strap extends upward toward the top edge of the head panel and one end of each strap extends in a taut draped manner from the sleeve. The ends of the strap are secured in a stationary manner to the side frame member. The flexible elastic straps restrain and cushion the head panel as the head panel is subjected to outside forces reducing strain and wear, yet allowing the head curtain to yield upon engagement with a truck.
    Type: Grant
    Filed: April 29, 1981
    Date of Patent: May 3, 1983
    Assignee: Frommelt Industries, Inc.
    Inventor: Sylvan J. Frommelt
  • Inflatable seal
    Patent number: 4293969
    Abstract: An inflatable seal for use in an adjustable dockboard unit for sealing the unit against the flow of air therethrough into and/or out of the building in which the dockboard is being used.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: October 13, 1981
    Assignee: Frommelt Industries, Inc.
    Inventor: Sylvan J. Frommelt
  • Loading dock seal
    Patent number: 3939614
    Abstract: A loading dock seal embodying an inflatable member disposed in overlying relation to a resilient, compressible pad member.
    Type: Grant
    Filed: July 26, 1974
    Date of Patent: February 24, 1976
    Assignee: Dubuque Awning & Tent Company
    Inventors: Cyril P. Frommelt, Sylvan J. Frommelt
  • Loading dock shelters
    Patent number: 3935684
    Abstract: A loading dock shelter of the pad type, wherein the side pads thereof are movably mounted on brackets which are concealed.
    Type: Grant
    Filed: December 12, 1974
    Date of Patent: February 3, 1976
    Assignee: Dubugue Awning & Tent Company
    Inventors: Cyril P. Frommelt, Sylvan J. Frommelt
  • Loading dock shelters
    Patent number: 3934380
    Abstract: A loading dock shelter of the pad type, wherein the pads may be moved between operative, projecting position and retracted position.
    Type: Grant
    Filed: March 29, 1974
    Date of Patent: January 27, 1976
    Assignee: Dubuque Awning & Tent Company
    Inventors: Cyril P. Frommelt, Sylvan J. Frommelt