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:
May. 28, 1985
Filed:
Jul. 13, 1983
Carl I Swanson, Boylston, MA (US);
Kidde, Inc., Saddle Brook, NJ (US);
Abstract
An electrical protection system including a plurality of suppressor units each activatable by either a first or a second electrical current responsive activator to suppress abnormal condition. The system further includes a supervisory electrical current source, an activation electrical current source, a first connector circuit connecting all of the first activators in series and a second connector circuit connecting all of the second activators in series. A control circuit connects the supervisory source in parallel with the first and second connector circuits so as to provide in each a predetermined supervisory current that is insufficient to energize the activators. Included in the control circuit is an initiator device for selectively connecting the activation source to the first and second connector circuits so as to provide therethrough an activation current flow greater than the supervisory current flow and sufficient to energize the activators and thereby activate the suppressor units to suppress the abnormal conditions. Also included in the control circuit is a monitor system for monitoring the supervisory current flow through each of the first and second connector circuits.