Movable or removable closures – Bump actuated latch release for biased closure
Patent
1977-11-11
1979-03-27
Kannan, Philip C.
Movable or removable closures
Bump actuated latch release for biased closure
49236, E05C 1500
Patent
active
041458427
ABSTRACT:
A pair of swingable gate sections include respectively associated latching mechanisms for normally latching the gate sections in a closed position and further include a pair of spaced triggering members engageable by an approaching vehicle for automatically activating the latching mechanisms to unlatch the gate sections and allow the latter to be swung to an open position under the force exerted by the vehicle as the latter passes through the gated area. The gate sections are respectively mounted by inclined hinges on a pair of spaced supporting members whereby the gate sections are automatically drawn under the influence of gravity back to their closed positions after the vehicle has passed therethrough whereupon the latching mechanisms automatically relatch the gate sections in their closed positions. The engageable trigger members each comprise a pivotally mounted U-shaped structure presenting an engageable surface area on each side of each gate sections to allow a vehicle to automatically unlatch the gate sections by traversing the gated area in either of two directions. Each gate section is provided with a pair of actuatable latching members which cooperatively engage corresponding keeper elements stationarily secured on the ground to latch the gate sections in a closed position, and the latching mechanisms are responsive to the pivotal movement of the trigger members for releasing selective ones of the latching members from their corresponding keeper elements to accomplish unlatching of the gate sections. As a further feature, a locking assembly connected between adjacent extremities of the gate sections functions to maintain the latter in a closed position until both of the trigger members are simultaneously actuated by a vehicle whereby to simultaneously unlatch each of the gate sections for swinging movement to the open positions thereof, thus preventing inadvertent opening of a single gate section by livestock having engaged a single triggering member.
REFERENCES:
patent: 1663152 (1928-03-01), Baeth
patent: 2585481 (1952-02-01), Martin
patent: 2742722 (1956-04-01), Schaefer
patent: 2810220 (1957-10-01), Koch
patent: 3199237 (1965-08-01), Koch
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