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:
Oct. 08, 1996
Filed:
Jan. 27, 1995
Mats Bjorsne, Lyckeby, SE;
Bo Svensson, Karlskrona, SE;
Dynapac Heavy Equipment AB, Karlskrona, SE;
Abstract
The invention relates to a dual steering system for a tandem-type surface compacting machine equipped with two independent steering modes, for example, a machine equipped with both frame steering (3) and with individual steering (6) of one of the rollers (4a). The invention provides a control of both systems, one enabled by a steering-wheel activated steering valve (11) and the other enabled by a joystick-activated control valve ( 12). The control valve ( 12) is operatively connected to the switching valves (14a to 14d) which are activated with an electric switch in such a way that the machine operator can instantly select the steering mode whose activation with the steering wheel or joystick he deems most appropriate at any given time.