Patents by Inventor Stan J. Sussina

Stan J. Sussina 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).

  • Cylinder lock and key assembly and hierarchical system therefor
    Patent number: 5943890
    Abstract: A lock mechanism has at least one tumbler pin having one or more slots in the tip surface of the pin and a key blade which is formed with a projection extending from the surface of the bitting area. The tumbler pin can be rotatable in such a manner that it will seek to accommodate the projection on the surface of the key and to match the surfaces of the key and tumbler pin tip, thus aligning the tumbler pin at a position predetermined by the key bitting. In this regard, the tumbler pin tip is preferably tapered and adapted to engage with a key having a complementarily shaped bitting surface, i.e., complementary to the tapered surface of the tumbler pin tip, such that the tumbler pin will seek to accommodate the tapered surface of the key bitting to align the tumbler pin at a proper position. Alternatively, the tumbler pin can include a projection or the like to inhibit rotation of the tumbler pin.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: August 31, 1999
    Assignee: Medeco Security Locks, Inc.
    Inventors: Peter W Field, Stan J. Sussina
  • Restricted key system
    Patent number: 5176015
    Abstract: A restricted key system providing keys/key slots with an angled or chevron shaped cross sectional profile. Each key blade of the restricted key system includes an upper planar portion which is bitted or cut to position the standard pin tumblers, an intermediate portion which forms a horizontal ledge, and a lower planar portion which extends from the intermediate portion at an angle in the range of 5.degree.-85.degree. relative to the upper planar portion. The horizontal ledge of the key blade may be provided with at least two additional bitting surfaces for wards, tumblers and/or other key differing elements.
    Type: Grant
    Filed: April 10, 1991
    Date of Patent: January 5, 1993
    Inventor: Stan J. Sussina
  • Restricted key system
    Patent number: RE35518
    Abstract: A restricted key system providing keys/key slots with an angled or chevron shaped cross sectional profile. Each key blade of the restricted key system includes an upper planar portion which is bitted or cut to position the standard pin tumblers, an intermediate portion which forms a horizontal ledge, and a lower planar portion which extends from the intermediate portion at an angle in the range of 5.degree.-85.degree. relative to the upper planar portion. The horizontal ledge of the key blade may be provided with at least two additional bitting surfaces for wards, tumblers and/or other key differing elements.
    Type: Grant
    Filed: January 4, 1995
    Date of Patent: May 27, 1997
    Assignee: Medeco Security Locks, Inc.
    Inventor: Stan J. Sussina