Patents by Inventor Stefan Karp

Stefan Karp 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).

  • Operating unit
    Publication number: 20040012361
    Abstract: Proposed is an operating unit for operating a user interface of an electrical device, the operating unit having a rotating body (1) that may rotate about an axis (9). According to the present invention, the rotating body may be tilted about an axis perpendicular to the axis of rotation.
    Type: Application
    Filed: July 14, 2003
    Publication date: January 22, 2004
    Inventors: Ulrich Gaertner, Christopher Pflug, Stefan Karp
  • Improvement in roller chains
    Patent number: 5437148
    Abstract: A chain including a plurality of pairs of inner and outer link plates interconnected by pivot pins extending through aligned apertures in the inner and outer link plates. A roller surrounds each pivot pin between the inner link plates. The roller is integral with the pivot pin. An aperture of each of the outer link plates is formed with an inwardly extending tubular protrusion. This protrusion is received within an aperture of an adjoining inner link plate. The roller is rotatable relative to the link plates.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: August 1, 1995
    Inventor: Stefan Karp
  • Non-uniform torque transmitting mechanisms such as bicycle chainwheel sets
    Patent number: 5324238
    Abstract: A crank, 14, driven wheel from a central boss, 20, to an outter rim, 22, via ribs, 12 (12a or 12b), transmitting slightly improved torque to a chain (belt, rope or similar), 16, via chain wheel teeth, 10 (in this example), able to store some elastic energy in the ribs, 12, (12a or 12b), when crank, 14, transmits maximum torque (around the horizontal position) and releasing it to the rim, 22, (hence to chain, belt, rope or similar, 16,) when crank, 14, transmits least torque (around vertical positions) and having an additional ability of small elastic deformation in response to slight misalignment of the line of force offered to the rim, 22, by chain (belt, rope or similar), 16.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: June 28, 1994
    Inventor: Stefan Karp
  • One way clutch
    Patent number: 5188205
    Abstract: A one way clutch comprises an inner clutch member (12) and an outer clutch member (10). The outer clutch member carries a set of ratchet teeth (18) and the inner clutch member carries two sets of sloping faced projections (20, 22) around its periphery. An arcuate resiliently flexible member (14) is arranged between the inner and outer clutch members and has a set of ratchet teeth (26) engageable with the outer member ratchet teeth and a set of sloping faced projections (37) at intervals along its length. A tail end of the member carries a pawl (32). On relative rotation of the inner and outer members in a non-driving direction, the pawl ratchets over the outer clutch member ratchet teeth.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: February 23, 1993
    Inventors: Stefan Karp, Stuart C. Burgess