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:
Sep. 12, 2000
Filed:
Apr. 06, 1998
Applicant:
Inventors:
Henry D Barthalow, Greencastle, PA (US);
Claude R Zimmerman, Mercersburg, PA (US);
Assignee:
Grove U.S. L.L.C., Shady Grove, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
9116 / ; 91530 ; 91173 ;
Abstract
The telescoping system includes a first and second fluid motor. The first fluid motor includes a first cylinder and a second cylinder nested in the first cylinder. The second fluid motor includes the second cylinder and a piston disposed in the second cylinder. The second cylinder has a double barrel outer wall forming a hydraulic fluid passageway. A hydraulic control system in the telescoping system includes a single control valve, solenoid valves, and holding valves, and controls extension and retraction of the telescoping system.