Ramp-operated mechanical gate systems

Details Ramp-operated mechanical gate systems Ramp-operated mechanical gate systems

1983-10-31

1985-06-11

Kannan, Philip C.

Movable or removable closures

Treadle or impact initiated operator

Spaced open and close initiators on opposite sides of closure

49271, 49274, E05F 1300

Patent

active

045219923

ABSTRACT:
A ramp-operated mechanical gate system, including vertically-swinging gate, sliding gate and side-swinging gate embodiments which utilize collapsible ramps to supply energy to open a gate so that the gate is opened automatically when the collapsible ramp is depressed by an approaching vehicle and is closed automatically when the vehicle drives through the gate and the ramp is no longer depressed.

REFERENCES:
patent: 1177467 (1916-03-01), Worland
patent: 1426062 (1922-08-01), Harrington
patent: 1628703 (1927-05-01), White
patent: 1632028 (1927-06-01), Keisling
patent: 1655328 (1928-01-01), Murphy
patent: 1668631 (1928-05-01), Coates
patent: 1692821 (1928-11-01), Dobson
patent: 1894549 (1933-11-01), Akers
patent: 2299986 (1942-10-01), Hummel
patent: 2463392 (1949-03-01), Kennel
patent: 2804705 (1957-09-01), Lusk
patent: 3581438 (1971-06-01), Treiber
patent: 3599372 (1971-08-01), Curtis

Affiliated with

Also associated with

Rating

Ramp-operated mechanical gate systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ramp-operated mechanical gate systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ramp-operated mechanical gate systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1176336