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. 14, 1980
Filed:
Feb. 09, 1979
Samuel Rhine, Beaumont, TX (US);
Helena Laboratories Corporation, Beaumont, TX (US);
Abstract
In a chart recorder where a print head is used to record data on a moving strip of chart paper, an improved apparatus for biasing the print head against the moving chart paper. The biasing apparatus provided includes a cantilevered leaf spring to maintain a constant and preset pressure between the print head and the moving chart paper. The distal or fixed end of the leaf spring is anchored to the frame of the chart recorder and the print head is mounted on the free end of the cantilevered leaf spring so that the leaf spring maintains a constant pressure between the print head and the moving chart paper. The cantilevered spring is adjustable to provide the desired amount of pressure between the print head and the moving chart paper. When a new roll of chart paper is inserted into the chart recorder, the cantilever spring re-establishes and maintains the pressure between the print head and the new roll of chart paper.