Patents by Inventor Angelo Colombo

Angelo Colombo 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).

  • Tubular door lock with a catch device
    Patent number: 4479671
    Abstract: The invention proposes a tubular door lock of the type comprising essentially an elongated box casing for containing a control slide for the bolt, and provided with a plug which can be controlled from the outside for its positioning into a first inactive position in which said plug does not interfere with the path of said slide, and into a second active position in which said plug interferes with said path, and vice versa.
    Type: Grant
    Filed: July 8, 1981
    Date of Patent: October 30, 1984
    Assignee: Valli & Colombo S.p.A.
    Inventor: Angelo Colombo
  • Cam operated lock, particularly for doors
    Patent number: 4296956
    Abstract: Cam operated lock comprises a latch mobile against a spring along a tubular guide. The latch is operated by way of a cam which can be rotated against a spring by a manually operating member, preferably a handle. The handle needs to be turned through only a small angle for opening the lock. The lock can be fitted to both right hand and left hand opening doors with little adaptation, and in both these positions the lock is opened by turning the handle downwards.
    Type: Grant
    Filed: July 19, 1979
    Date of Patent: October 27, 1981
    Assignee: Valli & Colombo S.p.A.
    Inventor: Angelo Colombo