Patents by Inventor Peter Pointon

Peter Pointon 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).

  • Keyboards
    Patent number: 3964593
    Abstract: A key for an electronic keyboard comprises a plunger in a body which is mounted on the keyboard chassis and striker, with a helical spring within the plunger for engaging the striker. To provide required tactile characteristics, a further spring means, e.g., a bowed diaphragm, is arranged between the plunger and the striker and also a snap-action spring is arranged between the plunger and the body.
    Type: Grant
    Filed: April 8, 1974
    Date of Patent: June 22, 1976
    Assignee: Alphameric Keyboards Limited
    Inventor: Peter Pointon
  • Capacitive key for electronic circuit
    Patent number: 3951250
    Abstract: In a keyboard for an electronic circuit having a striker on each key formed of electronic material which is conductive or carries a conductor and which is moved downwardly towards a fixed conductor assembly to provide capacitive coupling, it is found that electrostatic charges can be generated by operation of a key which give spurious outputs. The present invention provides constructions for reducing the effects of such charges.
    Type: Grant
    Filed: April 8, 1974
    Date of Patent: April 20, 1976
    Assignee: Alphameric Keyboards Limited
    Inventors: Peter Pointon, Ian Robert Prince, Wolfgang Bial
  • Keyboard structure having panel mounted key actuators with electrical component operating element
    Patent number: 3940578
    Abstract: An electronic keyboard has a chassis with keys each utilising a parallel motion linkage to permit movement of an operating member towards an electric circuit element. The main structure of the keys and linkage may be formed as a unitary plastics moulding.
    Type: Grant
    Filed: April 9, 1974
    Date of Patent: February 24, 1976
    Assignee: Alphameric Keyboards Limited
    Inventor: Peter Pointon