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. 29, 1985
Filed:
Aug. 24, 1982
Andrew Zsolnay, Manhattan Beach, CA (US);
Kelly M Perkins, Anchorage, AK (US);
Leiv H Blad, Van Nuys, CA (US);
Lockheed Corporation, Burbank, CA (US);
Abstract
This invention is directed to a method of automatically controlling curing of a thermosetting polymeric material. The method comprises the steps of (a) applying heat to the polymeric material to initiate curing; (b) measuring a selected characteristic of the polymeric material at various times during the cure cycle thereof; (c) generating a set of signals corresponding to the measurements made; (d) determining from the signals the optimum time for applying pressure to the polymeric material; and (e) automatically applying pressure to the polymeric material at the optimum time, in a closed-loop system. The selected characteristic measured may be the capacitance or the dissipation of the polymeric material. In general, the pressure is automatically applied immediately after the minimum capacitance level is reached but before hardening of the polymeric material.