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:
Jan. 23, 1990
Filed:
Oct. 22, 1987
Jean C Saint Gerand, Loire, FR;
Potain, Societe Anonyme, Rhone, FR;
Abstract
The machine comprises, above a rotating frame, a mast which is foldable into two elements, a jib pivoted at the top of mast and a jib head member for the placing of loads, pivoted at the end of the jib. Straightening and holding in working position is assured by a unit comprising at least one counterbrace, a tie connected to a foot of the jib head member, a set of posts, a back holding cable, and a first double-acting jack associated with a system of connecting rods pivoted on the mast elements. Another double-acting jack connects the jib to the foot of the jib head member to make the machine work at different radii. The machine can be used for holding, lifting and placing loads on small-building construction sites.