Patents Assigned to PBS-Servicegesellschaft mbH & Co. KG
  • Patent number: 5230477
    Abstract: A knife shaft stripping device is described, in which the stripping fingers (5) are made of plastic and are injection molded in one piece either with a housing top (7) or with a housing bottom (8), and in which supporting stays (6) are associated with the stripping fingers (5), which likewise are made of plastic and injection molded in one piece with the mating housing bottom (8) or housing top (7). Bearing surfaces (12) for the knife shafts (3) are also disposed in the housing top (7) and in the housing bottom (8), and the stripping fingers (5) and supporting stays (6) are provided with abutment surfaces (9, 10) which contact one another when the cutting mechanism (2) is assembled such that the stripping fingers (5) are supported.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: July 27, 1993
    Assignee: PBS-Servicegesellschaft mbH & Co. KG
    Inventor: Willi Strohmeyer
  • Patent number: 5135178
    Abstract: A knife shaft assembly (1) for a document shredder formed from a series of cutting disks (3) arranged on a shaft (2) with spacer rings (4) disposed between them. The spacer rings (4) are compressible, and a securing mechanism, such as snap rings (6) received in grooves (5), is provided on the shaft to secure the cutting disks (3) on the shaft (2) under compression. During assembly, the spaces between the cutting disks (3) are adjusted to a predetermined size by compression in the axial direction. This arrangement enables material costs to be kept low while assuring high dimensional accuracy of the knife shaft assembly.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: August 4, 1992
    Assignee: PBS-Servicegesellschaft mbH & Co. KG
    Inventor: Willi Strohmeyer