Patents by Inventor Pieter Hoogerheide

Pieter Hoogerheide 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).

  • Striking box for retaining the bolt of a door lock
    Patent number: 4302039
    Abstract: Striking box for retaining the bolt of a door lock, comprising a bolt stop, an activating device for moving the bolt stop, a signalling switch and a mechanism mounted between the activating device and the bolt stop which ensures that the movement of the bolt stop is at first either prevented or delayed. The path of the bolt stop is crossed by a latch which is not directly connected to the bolt stop. The activating device and the latch are coupled so that the latch operates the signalling switch (28) before the bolt stop releases the bolt and after the bolt stop retains the bolt.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: November 24, 1981
    Assignee: Staat der Nederlanden (Staatsbedrijf der Posterijen, Telegrafie en Telefonie)
    Inventors: Cornelis Dukel, Pieter Hoogerheide, Jan G. C. Niehaus