Patent · US Active

Marker with a bone shaped magnetic core

US9711019B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

TYCO FIRE & SECURITY GMBH · CH

Inventors

Zhaohui Ren · Lo Wu, CN
Ding Jin · San Francisco, US
Fei Xue · Sunnyvale, US

Key dates

Filing date	Dec 2, 2015
Grant date	Jul 18, 2017
Priority date	—
Expiry date	Dec 2, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG08B13/2408
WIPO fieldControl
WIPO sectorInstruments

Abstract

Systems (100) and methods (1700) for providing a marker (102). The methods comprise forming a magnetic core (200) having a bone shape defined by two end portions (208, 212) and a center potion (210) disposed between the two end portions. The end portions each have a cross-sectional area larger than a cross-sectional area of the center portion. A coil (224) is disposed around the center portion. The coil is coupled to a passive electronic component (206) so as to form a resonator. The resonator is disposed in a housing (126) of the marker. The resonator resonates when an interrogation signal is produced by a transmitter circuit (112) located remote from and in proximity to the marker, whereby a variation in a magnetic field occurs.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.