Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1976-10-20
1977-10-04
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
74342, B66B 902
Patent
active
040519236
ABSTRACT:
A cage elevator of the cableless type which is particularly simple, safe and reliable; which forms a simple, compact and sturdy frame, cage, drive units and threaded cylinder sections combination; which may be easily extended to any height without alteration nor displacement of the other components; which has positive, neat and strong gear engagement in particular in internally threaded posts, thus offering the advantage to use square threads for self-braking; which includes a simple and convenient manual drive assembly to safely reach an exit door upon electrical power failure; and which includes guideways positively guiding the elevator cage laterally for reduced wear on the threads directly associated with the vertical travel. The cylinder sections are slotted and a frame carries the cage, a pair of drive units and gear drives operatively connected to worms in the threaded slotted cylinder sections, the cylinder sections are fitted in end-to-end relation in upright channels and each cylinder section can be removed from the channel independently of the other cylinder sections for ease of maintenance.
REFERENCES:
patent: 47761 (1865-05-01), Willard
patent: 679142 (1901-07-01), Farmer
patent: 790137 (1905-05-01), Karrer
patent: 828029 (1906-08-01), Jackson
patent: 920630 (1909-05-01), Ocumpaugh
patent: 1392078 (1921-09-01), Ouillett
patent: 1852134 (1932-04-01), Sweet
patent: 2724289 (1955-11-01), Wight
Blanchette Adrien Andre
Blanchette Lionel
Love John J.
Nase Jeffrey V.
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