Movable or removable closures – With operator for movably mounted closure – Coaxial of closure pivot
Patent
1978-12-20
1980-11-11
Kannan, Philip C.
Movable or removable closures
With operator for movably mounted closure
Coaxial of closure pivot
49 13, 49 28, 49 49, E05F 1502, E05F 1510, E01F 2300
Patent
active
042324840
ABSTRACT:
The toll bar of a tollgate is pivotable between horizontal and vertical positions by a reversible electric motor through the medium of a swingable crank gear. A frame for the motor and crank gear is turnable on the shaft for the toll bar and causes a switch to open the motor circuit when the bar encounters excessive resistance to movement toward its horizontal position. The bar is detachably coupled to a holder and causes a switch to actuate an alarm device when it is detached from the holder in response to engagement by a vehicle which passes the tollgate while the bar is away from the vertical position.
REFERENCES:
patent: 438620 (1890-10-01), Gillette
patent: 1886435 (1932-11-01), Vincent
patent: 1893824 (1933-01-01), McWhirter
patent: 1899496 (1933-02-01), Day
patent: 1997199 (1935-04-01), Pranger
patent: 2295419 (1942-09-01), Miskelly
patent: 2599744 (1952-06-01), Brundage
patent: 3686794 (1972-08-01), Sakamoto et al.
patent: 3857197 (1974-12-01), Reddy et al.
patent: 3955661 (1976-05-01), Popper et al.
Kannan Philip C.
Kontler Peter K.
Zuhlke Engineering AG
LandOfFree
Apparatus for moving toll bars or the like does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for moving toll bars or the like, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for moving toll bars or the like will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1685377