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:
Jun. 21, 1994
Filed:
May. 11, 1992
Applicant:
Inventor:
Jack R McLean, Richmond, VA (US);
Assignee:
Reynolds Metals Company, Richmond, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; G05G / ;
U.S. Cl.
CPC ...
156358 ; 1565831 ; 1565838 ; 100 50 ;
Abstract
A computer controlled, laboratory heat-sealing machine is employed as a quality control device to ensure that adequate heat seals are formed under pre-defined and outputted pressure, dwell time and temperature parameters. The apparatus includes sensors for monitoring temperature and pressure conditions throughout the sealing dwell period. The clamping pressure is constantly adjusted to be maintained at a preset level by sensing the clamping pressure and controlling the top heat-sealing bar through an eccentrically driven crankshaft linkage. Load cell arrangements for monitoring pressure in high and low pressure ranges are also disclosed.