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. 28, 1979
Filed:
Dec. 27, 1977
James B Starr, St. Paul, MN (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
The invention comprises a plurality of intrusion detection transducers connected together wherein each transducer has a central core extending along an axis and having a length along that axis defined as XL where X is an even number of at least two and L is a given length. At least one sensing winding wire is wound around the core to provide a first-hand winding of L/2 length, X-1 number of windings of length L, and a second end winding of L/2 length, each adjacent winding being a reverse polarity to the next adjacent winding. Means are provided to connect each transducer to the adjacent transducers such that the first end of one transducer connects to the second end of the adjacent transducer.