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.

Date of Patent:
May. 25, 1976

Filed:

Dec. 13, 1974
Applicant:
Inventors:

George S Harper, Cambridge, MD (US);

Lyal N Merriken, Cambridge, MD (US);

Assignee:

Airpax Electronics Incorporated, Cambridge, MD (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
335 63 ; 335 59 ; 335240 ;
Abstract

Disclosed is a magnetic circuit breaker having improved delay characteristics and particularly improved pulse tolerance. The trip coil of the breaker is spaced from the magnetic pole piece of a delay tube by a non-conductive, non-magnetic gap and the delay core is elongated to extend in its normal biased position through the electrical center of the coil. An inertia wheel is mechanically coupled to the trip armature to further increase pulse tolerance so as to reduce nuisance tripping in the presence of high but very short term overcurrents.


Find Patent Forward Citations

Harper, George. (1976). Circuit breaker with improved delay (U.S. Patent No. 3959755). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3959755

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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