Terrestrial magnetic sensor
First Claim
Patent Images
1. A terrestrial magnetic sensor comprising:
- a bobbin body having a magnetic core inserting groove,a silicon gel filled in the magnetic core inserting groove,a magnetic core buried in the silicon gel filled in the magnetic core inserting groove, anda bobbin cover for closing the magnetic core inserting groove of the bobbin body.
1 Assignment
0 Petitions
Accused Products
Abstract
A terrestrial magnetic sensor has a bobbin body having a magnetic core inserting groove, a silicon gel filled in the magnetic core inserting groove, a magnetic core buried in the silicon gel filled in the magnetic core inserting groove, and a bobbin cover for closing the magnetic core inserting groove of the bobbin body. Thus, this terrestrial magnetic sensor can suppress the decrease in the magnetic permeability by burying a magnetic core in a silicon gel and can be hardly affected by the influences of the variations in an environmental temperature and an external stress.
-
Citations
8 Claims
-
1. A terrestrial magnetic sensor comprising:
-
a bobbin body having a magnetic core inserting groove, a silicon gel filled in the magnetic core inserting groove, a magnetic core buried in the silicon gel filled in the magnetic core inserting groove, and a bobbin cover for closing the magnetic core inserting groove of the bobbin body. - View Dependent Claims (2, 3, 4)
-
-
5. A magnetic detector comprising:
-
a toroidal bobbin having a toroidal chamber defined therein, the toroidal chamber being filled with a heat insulating gel; a ring-shaped magnetic core enclosed in said chamber and encased in said gel so as to be substantially insulated from the influences of environmental temperature; and a coil wound about the toroidal bobbin for magnetically exciting the magnetic core. - View Dependent Claims (6, 7, 8)
-
Specification