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:
Aug. 29, 1978
Filed:
Feb. 24, 1977
Louis F Fairchild, Cedar Rapids, IA (US);
Robert R Brecht, Keystone, IA (US);
Iowa Manufacturing Company, Cedar Rapids, IA (US);
Abstract
An hydraulic system controlling the steering and width of an articulated expandable tandem roller turns both rolls at the same time in opposite directions when the machine is being steered or in the same direction when being expanded or contracted. An operator controlled electrical system, also governing travel of the machine in either opposite direction, controls steering and width adjustment and automatically reverses the 'hand' of the steering when the direction of travel of the machine is reversed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile