Patents Assigned to N.V. Nederlandsche Apparatenfabriek NEDAP
  • Patent number: 4438642
    Abstract: Attachment device by means of which a safety device can be attached to an article, comprising a hollow sleeve accommodating a screw member through operation of which the attachment device can be attached to an article to be protected, while said sleeve extends beyond the article-averted end of the screw member and being provided with a transverse bore hole provided in the corresponding end, said transverse bore hole being adapted to receive a lock shackle or the like which renders the screw member inaccessible to tools.
    Type: Grant
    Filed: December 17, 1981
    Date of Patent: March 27, 1984
    Assignee: N.V. Nederlandsche Apparatenfabriek Nedap
    Inventor: Hendrik J. De Jong
  • Patent number: 4308530
    Abstract: A detection system comprises at least one gate including transmitter means for forming a magnetic field and receiver means for receiving a signal transmitted by a detecting wafer provided with an oscillating circuit, wherein each gate comprises at least two spatial detection zones.
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: December 29, 1981
    Assignee: N.V. Nederlandsche Apparatenfabriek NEDAP
    Inventors: Harm J. Kip, Tallienco W. H. Fockens
  • Patent number: 4280256
    Abstract: A fastener of the kind in which a pin can be inserted into a closed housing between balls provided in a tapering space within the housing, which balls prevent the subsequent removal of the pin through the exercise of clamping action on the pin upon attempts to remove the pin from the housing, wherein the housing having a chamber housing a substantially freely rotatable body having a tapering cavity therein and a central aperture for the insertion of the pin therethrough, the cavity containing the balls, the balls having linear contact with the wall of said cavity.
    Type: Grant
    Filed: January 2, 1979
    Date of Patent: July 28, 1981
    Assignee: N.V. Nederlandsche Apparatenfabriek NEDAP
    Inventor: Hendrik J. de Jong
  • Patent number: 4196418
    Abstract: A detection plate for an identification system, comprising a resonant circuit, a switching device, and coding means, characterized in that the coding means comprises a digital circuit and is arranged to receive, in operation, supply voltage from the resonant circuit via rectifier means.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: April 1, 1980
    Assignee: N.V. Nederlandsche Apparatenfabriek NEDAP
    Inventors: Harm J. Kip, Tallienco W. H. Fockens