Patents by Inventor Walter Henkels

Walter Henkels 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).

  • Piston cylinder unit having an adjustable stroke length
    Patent number: 6347573
    Abstract: A piston-cylinder unit with an adjustable stroke length includes a cylinder having an axis, a closed end and a rod end, a piston rod supported in the rod end of the cylinder in sealed and sliding relation, and a piston received on the piston rod for axial movement relative to the piston and received in the cylinder for axial movement relative to the cylinder. A threaded connections is provided between the piston rod and the piston. A stop surface on the side of the piston facing the rod end of the cylinder and a counterstop surface associated in fixed relation with the cylinder and facing the closed end of the cylinder are engaged when the rod is extended from the cylinder to a full stroke length position. Upon such engagement the piston is held rotationally fixed to the cylinder such that upon rotation of the cylinder about the axis, the piston is rotated relative to the piston rod and is moved axially along the piston rod by the threaded connection such as to change the stroke length.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: February 19, 2002
    Assignee: Stabilus GmbH
    Inventors: Walter Henkel, Ines Kistenbrügger
  • Combined ruler and letter opener
    Patent number: D261612
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: November 3, 1981
    Inventor: Walter Henkels
  • Desk receptacle
    Patent number: D264224
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: May 4, 1982
    Inventor: Walter Henkels
  • Tape measure
    Patent number: D264447
    Type: Grant
    Filed: August 15, 1979
    Date of Patent: May 18, 1982
    Inventor: Walter Henkels
  • Combined clock and desk holder for note paper and writing instruments
    Patent number: D264821
    Type: Grant
    Filed: July 2, 1980
    Date of Patent: June 8, 1982
    Inventor: Walter Henkels
  • Combined holder for a magnifier and a letter-opener
    Patent number: D265964
    Type: Grant
    Filed: July 2, 1980
    Date of Patent: August 31, 1982
    Inventor: Walter Henkels
  • Clock
    Patent number: D268990
    Type: Grant
    Filed: May 29, 1981
    Date of Patent: May 17, 1983
    Inventor: Walter Henkels
  • Combined LCD-clock and holder for a ball point pen
    Patent number: D270623
    Type: Grant
    Filed: May 22, 1981
    Date of Patent: September 20, 1983
    Inventor: Walter Henkels
  • Combined magnifier and pen holder
    Patent number: D275401
    Type: Grant
    Filed: July 15, 1982
    Date of Patent: September 4, 1984
    Inventor: Walter Henkels
  • Clock
    Patent number: D276506
    Type: Grant
    Filed: July 15, 1982
    Date of Patent: November 27, 1984
    Inventor: Walter Henkels
  • Combined holder for a writing instrument and covered receptacle
    Patent number: D278641
    Type: Grant
    Filed: July 15, 1982
    Date of Patent: April 30, 1985
    Inventor: Walter Henkels
  • Combined holder for writing instruments and note paper
    Patent number: D279015
    Type: Grant
    Filed: May 4, 1983
    Date of Patent: May 28, 1985
    Inventor: Walter Henkels
  • Table clock
    Patent number: D279268
    Type: Grant
    Filed: June 27, 1983
    Date of Patent: June 18, 1985
    Inventor: Walter Henkels
  • Thermometer
    Patent number: D280184
    Type: Grant
    Filed: May 4, 1983
    Date of Patent: August 20, 1985
    Inventor: Walter Henkels
  • Clock
    Patent number: D283680
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: May 6, 1986
    Inventor: Walter Henkels
  • Combined clock and thermometer
    Patent number: D284271
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: June 17, 1986
    Inventor: Walter Henkels
  • Table calendar
    Patent number: D285702
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: September 16, 1986
    Inventor: Walter Henkels
  • Combined holder for note paper and a calendar
    Patent number: D287372
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: December 23, 1986
    Inventor: Walter Henkels
  • Ball point pen
    Patent number: D287736
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: January 13, 1987
    Inventor: Walter Henkels
  • Thermometer
    Patent number: D288178
    Type: Grant
    Filed: January 27, 1984
    Date of Patent: February 10, 1987
    Inventor: Walter Henkels