Lifting device for the controlled vertical transfer of objects

Details Lifting device for the controlled vertical transfer of objects Lifting device for the controlled vertical transfer of objects

1997-05-05

1998-06-02

Smith, James G.

Implements or apparatus for applying pushing or pulling force

Screw

Geared

254 47, 254 4R, 254DIG2, B66F 318

Patent

active

057588678

ABSTRACT:
A lifting device for the controlled vertical movement of objects, especially such objects, to which is conveyed an electric current through a line, such as chandeliers, is described. It is especially characterized by the combination of a relatively longitudinal support, provided with a longitudinal guide. A threaded, preferably trapezoidally-threaded driving shaft journaled in the ends of support which shaft is driven by a motor via worm gear unit. A carriage guided by the longitudinal guide which carriage is movable in the longitudinal direction of support with a nut fastened to carriage, cooperating with the driving shaft. A shaft provided perpendicularly in support carrying a first ring gear and chain relatively heavy and stable to turning, running over first ring gear, chain being driven by carriage to change its position in relationship to support as the position of carriage is changed in relationship to support by driving shaft, chain carrying in a first end the object.

REFERENCES:
patent: 338920 (1886-03-01), Brady
patent: 1477790 (1923-12-01), Townsend
patent: 1763144 (1930-01-01), Fuller
patent: 3606252 (1971-09-01), Dorough, Jr.
patent: 3843985 (1974-10-01), Leonhardt
patent: 3932907 (1976-01-01), Vornberger
patent: 4168053 (1979-09-01), Boenninghaus
patent: 4316238 (1982-02-01), Booty et al.
patent: 4485894 (1984-12-01), Soule et al.
patent: 4649585 (1987-03-01), Petrzelka et al.
patent: 5105349 (1992-04-01), Falls et al.
patent: 5420772 (1995-05-01), Evans

Affiliated with

Also associated with

Rating

Lifting device for the controlled vertical transfer of objects does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lifting device for the controlled vertical transfer of objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lifting device for the controlled vertical transfer of objects will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1451825