Power-assisted chain drive actuator for opening and closing gati

Details Power-assisted chain drive actuator for opening and closing gati Power-assisted chain drive actuator for opening and closing gati

1991-07-18

1992-10-20

Bui, Thuy M.

Endless belt power transmission systems or components

Positive drive pulley or guide roll

With particular belt

474212, 474213, F16G 1300

Patent

active

051565749

ABSTRACT:
In a power-assisted chain drive actuator for opening and closing gating fixtures, a drive chain has successive links formed of pairs of plates being parallel and swivel connected to each other by crosswise studs having an increased middle diameter holding the plates apart; the chain is also provided with members for limiting the relative angular displacement of adjacent links in the chain; between the middle increased diameters there engage the teeth of a drive sprocket; the limiting members prevent the chain from becoming deflected in the direction of its remote side from the drive sprocket past a position of substantially straight alignment of the links and take up the bending couples on the chain on application of a push force to a fixture leaf.

REFERENCES:
patent: 511137 (1893-12-01), Grueter et al.
patent: 2321702 (1943-06-01), Renkin
patent: 3153348 (1964-10-01), Kuntzmann
patent: 5092822 (1992-03-01), Wakabayashi

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