Movable or removable closures – Check or key controlled
Patent
1978-05-01
1980-04-01
Downey, Kenneth
Movable or removable closures
Check or key controlled
49 42, 49 49, E05B 6500
Patent
active
041954424
ABSTRACT:
An admission and/or egress control structure for separating two areas and regulating the passage of human traffic between the two areas including a barrier adapted to be disposed between the two areas to be separated, at least one turnstile in the barrier through which unassisted ambulatory humans may easily pass from one area to the other, at least one gate in the barrier extending to the bottom thereof through which nonambulatory and assisted ambulatory humans may easily pass from one area to the other, hinges mounting the gate for movement between open and closed positions relative to the barrier, springs normally and yieldably urging the gate towards the closed position, a lock for normally locking the gate in the closed position, and a control for the lock to unlock the gate from the closed position so that nonambulatory and assisted ambulatory humans may move the gate against the springs to the open position to pass easily therethrough to move from one area to the other without traversing either the barrier or the turnstile.
REFERENCES:
patent: 2984510 (1961-05-01), Hoffmann
patent: 3169329 (1965-02-01), Powers
patent: 3309664 (1967-03-01), Deutsch et al.
patent: 3813836 (1974-06-01), Dielman
patent: 4063519 (1977-12-01), Pretini
Keeling Ralph R.
Seranne Michel F.
Downey Kenneth
Illinois Central Gulf Railroad
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