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. 18, 1983
Filed:
Oct. 31, 1980
Jobst Brandt, Palo Alto, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A moving-medium XY plotter is provided with a platen which has a concave surface extending uniformly in the direction of pen motion. A drive roller and pinch roller assembly located near the bottom of the concavity provides the motion of the recording medium orthogonal to the pen motion, while at the same time curving the recording medium into the shape of a trough. This curvature stabilizes the motion of the recording medium by significantly enhancing its resistance to compressional buckling and ensures that the recording medium, as a result of its natural stiffness, will firmly contact the platen where writing is to occur.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile