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:
Nov. 02, 1999
Filed:
Sep. 11, 1997
Matthew Levine, Parkland, FL (US);
Other;
Abstract
An improved chart recorder integrates a variety of flexible control functions, including the ability to program a plurality of set points, which are advantageously made visually apparent on the chart recorder paper and used for direct equipment control. In a preferred embodiment, a reversible stepper motor is used in conjunction with an operator input, enabling a user to incrementally advance one or more pens in two dimensions in conjunction with paper travel. The chart paper may further optionally include a machine-readable code containing chart-related information, including scale resolution, with the recorder being programmed to detect and interpret the machine-readable code and adjust pen movement to ensure compatibility with the scale resolution. By providing a single unit which both indicates set points and delivers control outputs in accordance therewith, ambiguity is removed as to which piece of equipment may be responsible in the event of a malfunction, since the chart recorder may, itself, communicate all relevant information.