Elevator – industrial lift truck – or stationary lift for vehicle – Having specific load support drive-means or its control – Includes linking support cable in drive-means
Patent
1994-06-10
1996-02-13
Terrell, William E.
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific load support drive-means or its control
Includes linking support cable in drive-means
187263, 187254, B66B 1108
Patent
active
054905796
ABSTRACT:
A height adjustable tanker access platform system having a fixed frame member, an access platform operatively mounted on the fixed frame member for vertical movement with respect to the fixed frame member, and a drive mechanism operatively engaged between the fixed frame member and the access platform so as to provide for raising and lowering of the access platform, is disclosed. The drive mechanism comprises a drive means securely mounted on a fixed frame member, a drive pulley operatively connected to the drive motor to permit selective driven rotation of the drive pulley about a first rotational axis, and a main idler pulley rotatably mounted on the access platform for rotation about a second rotational axis. A drive cable is securely attached at an anchored end to the fixed frame member and securely attached at an opposite remote end to a vertically moveable counterweight. The drive cable is looped around the main idler pulley and looped in driveable engagement around the drive pulley such that rotation of the drive pulley causes corresponding movement of the drive cable, so as to thereby cause the access platform to be vertically moved with respect to the fixed frame member. The drive pulley has a "V"-shaped groove disposed around the periphery thereof, with the "V"-shaped groove being angled and dimensioned so as to receive the drive cable in releasable binding relation therein.
REFERENCES:
patent: 595874 (1897-12-01), Duwelius
patent: 3101130 (1963-08-01), Bianca
patent: 3838752 (1974-10-01), Berkovitz
patent: 5025893 (1991-06-01), Saito
patent: 5370205 (1994-12-01), Vanhala
Ratcliffe Ralph D.
Van Der Sleen Roelof
Hewson Donald E.
Preventative Maintenance Systems
Reichard Dean A.
Terrell William E.
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