Simulation-preventing turnstile

Details Simulation-preventing turnstile Simulation-preventing turnstile

1993-03-24

1994-09-27

Kannan, Philip C.

Movable or removable closures

Plural wings radiate from common pivot; i.e., revolving

Successive position-type; e.g., turnstile

49 25, E06B 1108

Patent

active

053497813

ABSTRACT:
A turnstile provided with an electronic control unit having a photoelectric cell (8, 9) connected therewith, located downstream from the turnstile revolving member (3), in the user walking-through direction, in order to check if the user has actually walked through. Therefore, the turnstile has the ability to detect and issue a signal for, a simulated walking-through attempt performed by a user who actuates turnstile revolving member (3) without actually walking-through said turnstile, and it proves particularly effective for checking the arrival and the presence of personnel at the working posts.

REFERENCES:
patent: 2341546 (1944-02-01), Hagenbook
patent: 3609914 (1969-09-01), Berl
patent: 3753317 (1973-08-01), Turpin et al.
patent: 3913717 (1975-10-01), Collins

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