The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 1988
Filed:
Dec. 29, 1986
Leon G Feterl, Salem, SD (US);
Core Industries, Inc., Bloomfield Hills, MI (US);
Abstract
An apparatus for supportably elevating and lowering material handling apparatus having an elongate member includes two arms radiating upwardly from a base. A lower undercarriage arm is pivotably attached to the elongate member, and the lift arm is attached to a roller support which moves along a rail on the elongate member. The roller support and attached lift arm arm moved by a winch-drawn cable. At least one pair of spaced support sheaves is mounted on the elongate member, and the cable passes under the sheaves. At least one riser post extends upwardly from the base and is attached to the lower undercarriage arm so that it intersects the cable between the spaced support sheaves. A sheave mounted on the riser arm intersects and supports the cable when the elongate member is lowered. As the elongate member is lowered, the riser post supports an increasing portion of the downward load. The net load on the cable is reduced and the elongate member can be elevated from a horizontal or near horizontal position with much less force.