Semi-automatic gate

Details Semi-automatic gate Semi-automatic gate

1991-02-19

1991-11-26

Kannan, Philip C.

Movable or removable closures

With operator for movably mounted closure

Actuated from opposite approaches

49 30, 49273, 49339, 49347, 49357, 49385, E05F 1100, E06B 1100

Patent

active

050672762

ABSTRACT:
A semi-automatic gate may be opened from a vehicle by pulling on a line attached to a counterbalance control mechanism. The counterbalance control mechanism comprises a cylinder having a damper-controlled flow of water arrangement which allows an enclosed quantity of water to shift when the gate is opened and to then slowly return past the damper to effect a subsequent gate closing. Water is also used within the gate support structure to provide an additional shifting of weight when the gate is opened or closed.

REFERENCES:
patent: 433565 (1890-08-01), Harrington
patent: 885085 (1908-04-01), Russell et al.
patent: 1118415 (1914-11-01), Hancock
patent: 1910220 (1933-05-01), Kremser et al.
patent: 2563894 (1951-08-01), White

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