Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1977-02-07
1977-11-01
Love, John J.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
49101, 49359, B66B 1308
Patent
active
040561623
ABSTRACT:
Operating mechanism for doorway closures of the rollably suspended overlapping and interdependently laterally moving two panels type. The operating mechanism comprises a transversely extending shaft which is powerably turnable in both angular directions and which is laterally co-movably mounted to the slower near-panel. There is a dual-arms lever which at its medial turning-point is co-turnably attached to the transverse shaft and is laterally co-movable with the near-panel. A far-link has its ends respectively pivotably attached at a lofty elevation of the far-panel and to the lever second-arm a judicious finite-distance from the turnable shaft, and a near-link has its ends respectively pivotably attached to the lever first-arm and at a lofty immovable-location of the doorway nearward framework. For the accordingly interdependently laterally movable overlapping closure panels, there are stop means to limit turning of the transverse shaft and lever in both angular directions as the panels approach fully-open and fully-closed positions across the doorway opening.
REFERENCES:
patent: 2077659 (1937-04-01), Bancroft
patent: 2637549 (1953-05-01), Borden
patent: 2929622 (1960-03-01), Thorson
patent: 3406484 (1968-10-01), Atkey et al.
Lo-Rise Elevator Company
Love John J.
Nimmer George R.
Rowland James L.
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