Adjustable lifting device for sewer frame or the like

Details Adjustable lifting device for sewer frame or the like Adjustable lifting device for sewer frame or the like

1994-02-17

1995-12-19

Cherry, Johnny D.

Handling: hand and hoist-line implements

Spacing hoist bar or frame

Adjustable to accommodate different size loads

294 6733, 294 816, 294 90, 294 93, B66C 114, B66C 166

Patent

active

054763002

ABSTRACT:
An adjustable lifting device, which includes a lifting frame, with at least one adjustable arm thereon and a lifting arm secured thereto is buttressed by sleeves and bars connecting each adjustable arm to the lifting arm.

REFERENCES:
patent: 168707 (1875-10-01), Beach et al.
patent: 1774623 (1930-09-01), Williams
patent: 2757036 (1956-07-01), Smith
patent: 2923569 (1960-02-01), Milliron
patent: 3206243 (1965-09-01), Miles
patent: 3339966 (1967-09-01), Carlson
patent: 3401973 (1968-09-01), Marshall
patent: 3442546 (1969-05-01), Bachman
patent: 4136903 (1979-01-01), Roethler

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