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. 23, 1976
Filed:
Dec. 03, 1974
Applicant:
Inventor:
Bernard M Bourges, Le Plessis-Belleville, FR;
Assignee:
Societe Anonyme: Poclain, Le Plessis-Belleville, FR;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01B / ;
U.S. Cl.
CPC ...
91173 ; 9118 / ; 9141 / ; 92 75 ; 92 52 ; 92152 ;
Abstract
This invention relates to a telescopic jack constituted by a main cylinder, a first piston sliding in said main cylinder, a first piston rod fast with the first piston which passes in tight manner through a first bottom of the cylinder, a second piston which may be disposed in a bore of the first rod and is mounted to slide with respect to the first piston, and by a second piston rod which is fast with the second piston. The second piston rod passes through the second bottom of the cylinder whilst the piston is separable from the rod. One application of the invention is the production of an inexpensive telescopic jack.