Patents by Inventor Hans H. Hardtke

Hans H. Hardtke 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: 5104079
    Abstract: In a supporting clamp for mounting constructional components, in particular pipe conduits, a fixing means is formed by a bar extending transversal to the beam and being arranged at the lower surface of the beam flange. On both sides of the beam flanges (2a) of the beam (2) longitudinally extending supporting sheet members (3,4) are arranged suspended on rounded bearing bars (5,6). The supporting sheet members (3,4) have longitudinal slots (9, 10). A web plate (8) is arranged in these slots which is secured against vertical displacement.
    Type: Grant
    Filed: October 24, 1990
    Date of Patent: April 14, 1992
    Assignee: Lisega GmbH
    Inventor: Hans H. Hardtke
  • Patent number: 5028019
    Abstract: A pipe support is provided which includes a bearing support defined by a base plate and two upwardly converging legs carrying pins which journal first anti-friction bearings between the legs and second anti-friction bearings outside the legs. A pipe is carried by a pipe support plate supported atop the first anti-friction bearings. The pipe support has ends carrying depending side plates which in turn include projections underlying the second anti-friction bearings which collectively provide free displacement longitudinally of the pipe axis and limited upward movement of the pipe support plate from atop the first bearings.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: July 2, 1991
    Assignee: LISEGA GmbH
    Inventor: Hans H. Hardtke
  • Patent number: 5028149
    Abstract: A roller bearing for supporting pipes subject to thermal expansion which includes a mounting defined by a base plate having opposite side walls bent into generally converging relationship to each other in a direction away from the base plate, a pillow block supported from the base plate, a roller between each side wall and the pillow block, a bearing pin rotatably supporting each roller, and each bearing pin being in spanning relationship between the pillow block and an associated one of the side walls.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: July 2, 1991
    Assignee: LISEGA GmbH
    Inventor: Hans H. Hardtke
  • Patent number: 4951902
    Abstract: A support bracket for pipes comprising a base of a generally U-shaped configuration defined by a base plate portion and a pair of spaced upstanding generally parallel leg portions. The leg portions each have a pair of shoulders spaced by a slot and each shoulder has an edge curved to mate with an outer convex surface of an associated pipe saddle. Each pipe saddle is in turn opposed by a pipe clip for fastening an associated pipe to the support bracket.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: August 28, 1990
    Assignee: Lisega GmbH
    Inventor: Hans H. Hardtke
  • Patent number: 4928911
    Abstract: A pipe supporting bracket comprised of a pair of generally identical clip elements with each clip element being defined by a foot which is normal to a lower bar portion and a semicircular pipe gripping portion between the lower bar portion and an upper bar portion. The clips are placed in side-by-side relationship with the pipe gripping portions opening in opposed relationship to each other and gripping a pipe therebetween. The feet are directed opposite each other, and cooperative threaded bolts and nuts secure the upper and lower bar portions together to lend stability and security to the pipe supporting bracket.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: May 29, 1990
    Assignee: Lisega GmbH
    Inventor: Hans H. Hardtke