Patents by Inventor Gian P. Andreoli

Gian P. Andreoli 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).

  • Double-throw bar lock having independently operable cylinders
    Patent number: 4802352
    Abstract: A bar lock comprising two toothed plates (1) and (2) and a rotatable cross element (3) which transmits movement to said plates. The cross element (3) is operated by two mechanisms, one internal and one external, which act independently of each other; the internal mechanism is composed of elements which are specular to the elements of the external mechanism. Each of said mechanisms comprises the following elements: a recess (25) provided in the base plate (18) and in the counter-plate (12) respectively; a rotary element (5) rotatable within said recess, the rotary element having a seat for entraining a roller (6) and having engagement means for engaging a tang of a cylinder or knob; a disc (7) rotatable with the cross element (3) and having notches (26) and (27); a slider (9) maintained in contact with the cross element by a spring (10) fixed to a spring-guide block (14).
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: February 7, 1989
    Assignee: ISEO Serrrature SPA
    Inventor: Gian P. Andreoli