Patents by Inventor Petrus J. J. Nagelkerke

Petrus J. J. Nagelkerke 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: 4393585
    Abstract: A dry-shaving apparatus is provided with hair-trimming means comprising two pairs of cooperating toothed cutters, each pair of cutters consisting of a reciprocatory cutter and a stationary cutter. One pair of cutters is adjustable between different positions and forms a first hair trimmer of relatively short length for trimming hairs which are not easy to get at with a full-length hair trimmer, for example, hairs in the ears. The other pair of cutters either is arranged for operation in line and in juxtaposition with the first pair of cutters in one of the positions thereof so as to form with the first pair of cutters a second hair trimmer of greater length than the first hair trimmer, or has a greater length than the first pair of cutters and forms a full-length second hair trimmer independently of the first hair trimmer.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: July 19, 1983
    Assignee: U.S. Philips Corporation
    Inventor: Petrus J. J. Nagelkerke
  • Patent number: 4260871
    Abstract: A hair roller holder comprises an elongated hollow handle defining a chamber for successively accommodating a plurality of hair rollers. Associated with the chamber is an arrangement for electrically heating the rollers therein. The chamber has an inlet opening at one end for insertion of the rollers in unheated condition and an outlet opening at the other end for discharge of the rollers in heated condition. Adjacent such outlet opening and externally of the chamber is a support for receiving a heated roller in a manner so that hair can be wrapped onto the roller and the roller can be manipulated by the handle. Provision is made in the chamber for guiding movement of the successive rollers therethrough onto the support. The movement guiding means may comprise guide pins in the chamber upon which the rollers are slidable and which are provided with electric heating elements for heating the rollers.
    Type: Grant
    Filed: March 9, 1978
    Date of Patent: April 7, 1981
    Assignee: U.S. Philips Corporation
    Inventor: Petrus J. J. Nagelkerke
  • Patent number: D262060
    Type: Grant
    Filed: June 7, 1979
    Date of Patent: November 24, 1981
    Assignee: U.S. Philips Corporation
    Inventor: Petrus J. J. Nagelkerke
  • Patent number: D262062
    Type: Grant
    Filed: June 7, 1979
    Date of Patent: November 24, 1981
    Assignee: U.S. Philips Corporation
    Inventor: Petrus J. J. Nagelkerke
  • Patent number: D270486
    Type: Grant
    Filed: March 25, 1981
    Date of Patent: September 6, 1983
    Assignee: U.S. Philips Corporation
    Inventor: Petrus J. J. Nagelkerke
  • Patent number: D278705
    Type: Grant
    Filed: October 5, 1982
    Date of Patent: May 7, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Petrus J. J. Nagelkerke, Klaas T. Oord
  • Patent number: D279723
    Type: Grant
    Filed: August 31, 1983
    Date of Patent: July 16, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Petrus J. J. Nagelkerke, Lynford S. Pepall, Klaas T. Oord
  • Patent number: D282979
    Type: Grant
    Filed: November 17, 1983
    Date of Patent: March 11, 1986
    Assignee: U.S. Philips Corporation
    Inventors: Petrus J. J. Nagelkerke, Klaas T. Oord