Movable or removable closures – Plural wings radiate from common pivot; i.e. – revolving – Successive position-type; e.g. – turnstile
Patent
1990-12-19
1991-12-17
Kannan, Philip C.
Movable or removable closures
Plural wings radiate from common pivot; i.e., revolving
Successive position-type; e.g., turnstile
E06B 1108
Patent
active
050725432
ABSTRACT:
A turnstile is made with a stationary turnstile support shaft extending from a solid support, and a bearing on the end of the shaft. The turnstile hub is supported on the end of the shaft with a bearing. The turnstile hub is locked against rotation in a fee-paid direction by a unidirectional pawl that engages a cutout on a ratchet plate attached to the hub. The unidirectional pawl is released by energizing a solenoid latching mechanism, rather than acting directly on the unidirectional pawl. Backcocking of the turnstile is prevented by a bidirectional pawl that engages notches on the ratchet plate. The bidirectional pawl is released by energizing a second solenoid latching mechanism, rather than acting directly on the bidirectional pawl.
REFERENCES:
patent: 2144718 (1939-01-01), Gersbach
patent: 2714264 (1955-08-01), Odell
patent: 3978613 (1976-09-01), Hayward et al.
patent: 3998008 (1976-12-01), Collins
Cubic Automatic Revenue Collection Group
Garmong Gregory O.
Kannan Philip C.
LandOfFree
Turnstile mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Turnstile mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turnstile mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-829463