Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1985-03-15
1986-07-15
Rolla, Joseph J.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
187 1R, 248680, 2421251, B66B 1106
Patent
active
046000860
ABSTRACT:
An elevator hoist apparatus of the type disposed in the bottom of a hoistway has an improved structure for securing the apparatus to the wall of the hoistway. The apparatus also comprises an improved hoist drum having multiple parallel rope grooves formed in the drum so as to spiral around the drum in the same direction from one end of the other to the other. The load acting on the main ropes wrapped around these grooves is thereby equalized, increasing the safety of the apparatus. Furthermore, the ends of the main ropes are secured to the drum so that the main ropes are reliably secured even when there is no tensile force acting on the main ropes.
REFERENCES:
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patent: 1904863 (1933-04-01), Griffin et al.
patent: 1941753 (1934-01-01), Plies
patent: 2892598 (1959-06-01), Dudley
patent: 3590263 (1971-06-01), Haug et al.
patent: 4042066 (1977-08-01), Noone
Iida Yasumasa
Sugiyama Yoshiki
Tangiku Itsurou
Yamasaki Shinji
Mitsubishi Denki & Kabushiki Kaisha
Pedersen Nils E.
Rolla Joseph J.
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