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:
Aug. 09, 1977
Filed:
Dec. 08, 1975
Darrell P Ophaug, Marion, IA (US);
Beryl W Layton, Cedar Rapids, IA (US);
Square D Company, Park Ridge, IL (US);
Abstract
An undervoltage trip coil and armature, with a pivotal member biased against and riding on the latch pin of the armature to sense its position. On occurrence of a low voltage condition, a trip lever causes the latch mechanism of the breaker to trip. The pivotal member then interferes with the latch and prevents reset. The undervoltage trip coil is normally energized to normally attract the undervoltage armature. On occurrence of a specified undervoltage condition the armature releases causing the trip lever to trip the latch mechanism and allowing the pivotal member to interfere with the latch of the breaker. During such condition, the breaker cannot be reset until the armature is attracted to the undervoltage coil under proper voltage condition.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile