Parking gate

Details Parking gate Parking gate

1991-05-30

1992-08-11

Kannan, Philip C.

Movable or removable closures

With traffic director or controller; e.g., one-way

49 28, 49141, E01F 1300, E05F 1510

Patent

active

051368102

ABSTRACT:
A pneumatically-powered traffic control gate is disclosed. This gate contains a cylinder and piston for raising and lowering its gate arm, a means for adjusting the alignment of the traffic gate arm, a pneumatic means for sensing the presence of an obstruction to the movement of said traffic gate arm, and a means for reversing the movement of the piston and the gate once the obstruction has been sensed.

REFERENCES:
patent: 3195879 (1965-07-01), Bond et al.
patent: 3626637 (1971-12-01), Rudicel
patent: 3686794 (1972-08-01), Sakamoto et al.
patent: 3791072 (1974-02-01), Miller
patent: 3975861 (1976-08-01), Baump et al.
patent: 4490068 (1984-12-01), Dickinson
patent: 4523513 (1985-06-01), Gudat et al.
patent: 4658543 (1987-04-01), Carr
patent: 4681479 (1987-07-01), Wagner et al.
patent: 4901071 (1990-02-01), Fletcher

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