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. 12, 1993
Filed:
Oct. 07, 1991
Melvin H Lipner, Monroeville, PA (US);
Albert J Impink, Jr, Murrysville, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A system for a process facility monitors the execution of a procedure in which steps are defined with associated conditions. Each condition is one of an initial condition, sequential condition or constraining condition. While constraining conditions are checked for violations during several steps, sequential conditions are checked only during an associated step. The sequential conditions may be transformed into constraining conditions for subsequent steps by setting a transform flag either prior to execution of the procedure or during execution of the procedure in response to an operator request. Once a transformable sequential condition has been met or the step associated therewith has been completed, an enable flag is set making the sequential condition a transformed condition which is checked at the same time as the predefined constraining conditions.