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. 10, 1982
Filed:
Feb. 17, 1981
Henry F Berdat, Manchester, CT (US);
The Gerber Scientific Instrument Company, South Windsor, CT (US);
Abstract
A plotting apparatus for plotting on a light sensitive material uses an optical head with an adjustable aperture plate to project a light beam through changeable apertures onto the light sensitive material. Encoding means are associated with the various apertures of the plate and comprise detectable indicia corresponding to the optical characteristics of the apertures. A detector on the optical head senses the indicia of the individual apertures as the plate is adjusted and sends signals corresponding to the identity of such characteristics to a control device responsible for adjustment of the plate or other component in the plotting apparatus.