Patents by Inventor Allan Jacobsen

Allan Jacobsen 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).

  • Sprinkler unit
    Patent number: 4657085
    Abstract: The body (1) of the sprinkler unit and the valve body (2) are formed with three cooperating shoulders (14,15) in the flow passage (6,8) to accommodate a seal (3) which, in the working state, serves both as a locking ring for the valve body (2) and to partly elastically absorb changes in the length of a rupturable valve caused by variations in the ambient temperature, while an O-ring (4) between the valve body (2) and the bulb (5) absorbs the remaining tensions. A third upstream shoulder (12) formed on the valve body (2) entrains the sealing element (3) when inserting the bulb (5) and the valve body (2) through the flow passage (6, 8).
    Type: Grant
    Filed: June 4, 1986
    Date of Patent: April 14, 1987
    Assignee: G. W. Sprinkler A/S
    Inventor: Allan Jacobsen