Movable or removable closures – With operator for movably mounted closure – Operator drives closure along guide
Patent
1977-05-02
1979-07-03
Kannan, Philip C.
Movable or removable closures
With operator for movably mounted closure
Operator drives closure along guide
49140, 192 93R, 74 36, E05F 1112, E05F 1500
Patent
active
041595998
ABSTRACT:
An improved gate-opening and closing assembly which is designed to shiftably move a gate from an opened position to a closed position, and from the closed position to the opened position in a relative planar path. This assembly comprises a lever arm connected to the gate and a drive arm pivotally connected at one end to the lever arm. At the other end, the lever arm is connected to a motor through a clutch mechanism for opening and closing the gate. The drive arm is operatively connected to the motor, such that it moves in a somewhat arcuate path and which causes the lever arm to move in an arcuate path. According to this construction, the assembly permits opening and closing of a relatively large gate with simple harmonic motion. The pair of relatively small arms and the entire assembly can be located within a relatively confined space in order to permit movement of a gate of substantial size. The present invention also provides a unique clutch mechanism which permits operation of the drive arm and lever arm in the arcuate paths.
REFERENCES:
patent: 899999 (1908-09-01), Osher
patent: 1202129 (1916-10-01), Varnum
patent: 1380789 (1921-06-01), Floeter
patent: 1583835 (1926-05-01), Hynes
patent: 1959042 (1934-05-01), Staley
patent: 3086766 (1963-04-01), Woodin et al.
patent: 3791071 (1974-02-01), Niklaus
Kannan Philip C.
Schaap Robert J.
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