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. 09, 1999
Filed:
Jan. 24, 1997
Richard W Lea, Caldecott, GB;
R.W.L. Consultants Limited, Leicestershire, GB;
Abstract
In order to monitor the operation of a system or apparatus, a physical parameter of the system or apparatus is repeatedly changed or periodically oscillated within defined limits. Under normal conditions, stable oscillation will occur. In the event of a fault or system failure, oscillations will become unstable and a fault indicator may be generated. A communication system which may use the foregoing monitoring method includes a plurality of function units arranged in groups with individulal units in each group being connected to each other in series. A separate address is allocated to each group of function units and communication with units in each group is achieved sequentially.