Flat lifting device

Details Flat lifting device Flat lifting device

1994-11-30

1997-05-06

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Screw

B66F 308

Patent

active

056263287

ABSTRACT:
A flat lifting device includes an outer and an inner hollow section rail with closed cross section and with a substantially greater width than a thickness. One of the section rails is acted upon by a drive unit having a linearly moveable drive member for shifting the one section rail relative to the other section rail. Opposing surfaces of the outer and inner section rails are preferably provided with meshing profiles which extend in moving direction of the slideable section rail.

REFERENCES:
patent: 2368748 (1945-02-01), Doty
patent: 2683341 (1954-07-01), Kock
patent: 3022043 (1962-02-01), Weiss
patent: 3210846 (1965-10-01), Balkin
patent: 3537762 (1970-11-01), Lodige
patent: 4206910 (1980-06-01), Biesemeyer
patent: 5064318 (1991-11-01), Cirillo
patent: 5131761 (1992-07-01), Bury
patent: 5268970 (1993-12-01), Tanaka
patent: 5285733 (1994-02-01), Waibel
patent: 5365862 (1994-11-01), Peterson

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