Patents by Inventor Max Pfister

Max Pfister 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: 4412718
    Abstract: In the case of a plug contact which consists of an electrical contact body (11) and of a spring sleeve (12) with a longitudinal joint (43), encompassing said contact body on the outside, the fixation of the spring sleeve on the contact body has been solved as follows: The portions of the spring sleeve (12) adjoining the longitudinal joint (43) each have a perforation (51) with which an anchoring cam (53) of the contact body (11) projecting to the outside is in locking engagement. Between each perforation (51) and the longitudinal joint (43), there is a hold back bridge (55) which, in cooperation with the adjacent anchoring cams (53), firmly holds the spring sleeve (12) tensed in flush contact along the periphery of a cylindrical portion of the contact body (11). For the manufacture of the plug contact, a sheet metal blank for the spring sleeve (12) is bent into a U-shape, the U-bridge and U-legs of which each run along a circular arc over about 120.degree.
    Type: Grant
    Filed: February 18, 1982
    Date of Patent: November 1, 1983
    Assignee: CDM Connectors Development & Mfg. AG
    Inventor: Max Pfister
  • Patent number: 4341434
    Abstract: An electric plug contact which includes a cylindrical contact body and a spring sleeve fixedly wrapped therearound is fabricated by rolling a metal sheet into a pipe shape to form the cylindrical contact body and then punching pairs of outwardly extending anchoring members therefrom; bending a flat metal sheet which includes perforations near its side edges into a U-shape, each of the middle part and the lateral leg parts having the shape of a circular arc extending over about 120.degree.
    Type: Grant
    Filed: October 15, 1979
    Date of Patent: July 27, 1982
    Assignee: CDM Connectors Development & Mfg. AG
    Inventor: Max Pfister