Patents Assigned to Massachusetts Bay Transportation Authority
  • Access control system
    Patent number: 4142620
    Abstract: An access control system is disclosed wherein a passageway normally blocked by a gating structure such as a turnstile is opened to admit a person upon insertion of a coin into a coin slot, or upon insertion of an encoded card into a read head.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: March 6, 1979
    Assignee: Massachusetts Bay Transportation Authority
    Inventor: Edward P. Sheehan
  • Card reader head assembly
    Patent number: D252683
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: August 21, 1979
    Assignee: Massachusetts Bay Transportation Authority
    Inventors: Edward P. Sheehan, John P. Connolly, James B. King