Patents by Inventor Heinz Seifert

Heinz Seifert 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: 4984777
    Abstract: A flexible bearing for supporting a body, in particular, for supporting an internal-combustion engine, includes a journal bearing that may be attached to a supporting foundation and a support that may be attached to the engine. An elastic spring is connected between the journal bearing and the support while a bearing spring made of a non-creeping material is connected between the journal bearing and the support in parallel with the elastic spring. The bearing spring comprises at least one disk spring having an S-shaped spring constant curve. The disk spring and the elastic spring have load carrying capacities such that, after the weight of the body to be supported is applied to the flexible bearing, the spring rate of the disk spring is essentially zero and the rubber spring is essentially free of elastic tensions.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: January 15, 1991
    Assignee: Firma Carl Freudenberg
    Inventors: Klaus Kurr, Hans-Gerd Eckel, Heinz Seifert, Werner Idigkeit, Armin Barth
  • Patent number: 4952194
    Abstract: A rotatable elastic coupling for connecting two relatively rotatable shaft ends comprising a coiled spring having ends that are fixed to a respective shaft end. One of the shaft ends is provided with an extension that axially extends into the interior of the spring. In the region adjacent to the spring ends, an intermediate portion of the spring is radially spaced from the extension. A gap formed by the radial spacing between the intermediate spring portion and the extension is defined between an inner abutment surface of the spring portion and an outer abutment surface on the extension. Relative rotation of the shafts reduces the gap until the abutment surfaces come into contact and a rotational limit is reached.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: August 28, 1990
    Assignee: Firma Carl Freudenberg
    Inventors: Hans-Gerd Eckel, Heinz Seifert
  • Patent number: 4825718
    Abstract: A torsional vibration damper, comprising a hub ring and a rotating ring, which encircle one another in a radial space and are positioned in one another by a guide so that they can rotate relative to one another. The collars of the hub ring and rotating ring, between which there is a clearance in the axial direction and which are connected by an essentially tubular resilient body of rubber extending in the axial direction, lock into the gap formed by the space. The resilient body has a radial clearance on the one hand from the hub ring and, on the other, from the rotating ring. The gaps formed by the clearance in the radial and axial directions, are closed off towards the outside and filled with a flowable, incompressible medium.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: May 2, 1989
    Assignee: Firma Carl Freudenberg
    Inventors: Heinz Seifert, Hans-Gerd Eckel
  • Patent number: 4779854
    Abstract: A vibration damper for bodies which extend substantially parallel to one another, consisting of a clip made of a permanently elastic material and adapted to be slipped undislodgeably onto one of the bodies, and of at least two lugs projecting therefrom in the direction of at least one further body which clasp the latter with elastic initial tension, permitting relative displacement.
    Type: Grant
    Filed: September 22, 1987
    Date of Patent: October 25, 1988
    Assignee: Firma Carl Freudenberg
    Inventors: Werner Idigkeit, Benno Jorg, Heinz Seifert
  • Patent number: 4764152
    Abstract: A resilient coupling for use between two, relatively-movable machine parts has a resilient body and an integral projection jutting out from the profile of the resilient body. A surface of the resilient body is arranged for joining, for example, adhesively, to one machine part and a surface of the projection arranged for joining, for example adhesively, to the other machine part, the jut of the projection and its surface for joining to the machine part preferably being perpendicular to each other.
    Type: Grant
    Filed: June 25, 1987
    Date of Patent: August 16, 1988
    Assignee: Firma Carl Freudenberg
    Inventors: Benno M. Jorg, Klaus Kurr, Heinz Seifert
  • Patent number: 4736510
    Abstract: A process of producing a resilient coupling in a clearance space between two, relatively-movable elements with a polymeric material introduces the polymeric material contactingly into a clearance space between the elements. A portion of the polymeric material is softened at least while in contact with the clearance-space surface for adhesion when solidified thereafter into a resilient body for the coupling, but a portion of the clearance-space surface is arranged to prevent adhesion. The combination provides coupling with guidance of the relative motion.
    Type: Grant
    Filed: December 10, 1986
    Date of Patent: April 12, 1988
    Assignee: Firma Carl Freudenberg
    Inventors: Benno M. Jorg, Klaus Kurr, Georg Schafer, Heinz Seifert
  • Patent number: 4726574
    Abstract: A vibration damper for bodies which extend substantially parallel to one another, consisting of a clip made of a permanently elastic material and adapted to be slipped undislodgeably onto one of the bodies, and of at least two lugs projecting therefrom in the direction of at least one further body which clasp the latter with elastic initial tension, permitting relative displacement.
    Type: Grant
    Filed: March 13, 1987
    Date of Patent: February 23, 1988
    Assignee: Firma Carl Freudenberg
    Inventors: Werner Idigkeit, Benno Jorg, Heinz Seifert
  • Patent number: 4082160
    Abstract: A silencer for reducing the noise of an exhausting gas stream, comprising a hollow body having a connector, a sound-absorbing insert in the body and an inner component, the sound-absorbing insert comprising at least one split sheet of closed-pore foamed plastic material having a thickness of less than its average pore-size. Advantageously the sheet material comprises closed-pore cross-linked foamed polyethylene stacked or wound to provide about 3 to 30 layers, each layer ranging in thickness from about 0.1 to 1.0 mm, having an average pore diameter from about 0.2 to 2 mm and an air permeability from about 0.5 to 200 Rayl, the air permeability of the innermost layer ranging from about 1 to 4 times the air permeability of the outermost layer.
    Type: Grant
    Filed: April 8, 1976
    Date of Patent: April 4, 1978
    Assignee: Firma Carl Freudenberg
    Inventors: Hermann Schilling, Heinz Seifert