Patents by Inventor William J. Craske

William J. Craske 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: 5094157
    Abstract: A can crushing machine comprising a first crusher device (14, 15) for crushing a can (2) from a side of the can (2) such that a first side (2a) of the can (2) is forced towards a second side (2b) of the can (2) and such that ends (2c, 2d) of the can (2) are caused to pivot inwardly towards each other and towards the second side (2b), a second crusher device (10) for acting on the pivoted ends (2c, 2d) of the can (b 2) to further crush the can (2), a magnetic separator (45, 46, 39) for holding steel based cans but not aluminium based cans whereby the magnetic separator (45, 46, 39) is able to separate steel based cans from the aluminium based cans during use of the can crushing machine, and an adjuster device (70, 89) for moving all cans placed in the can crushing machine against a stop member (93).
    Type: Grant
    Filed: August 16, 1990
    Date of Patent: March 10, 1992
    Assignees: J. M. Challis, W. J. Nicholls
    Inventors: George Challis, William J. Craske
  • Patent number: 4249469
    Abstract: A safe having first and second combination locking mechanisms which can each open the safe irrespective of the combination setting of the other combination locking mechanism, whereby one combination locking mechanism can be operated by a hotel customer and the other combination locking mechanism can be operated by the hotel management in order to provide a high degree of security.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: February 10, 1981
    Assignee: Crado Devices Limited
    Inventor: William J. Craske