Patent ID: 11874300
Assignee: NHK SPRING CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. The contact probe according to claim 12, wherein
the spring member comprises:
a first dense wound part, an outer circumference of the first dense wound part contacting the first cylindrical part;
a rough wound part wound with a previously set gap, the rough wound part extending from the first dense wound part; and
a second dense wound part, an outer circumference that of the second dense wound part contacting the second cylindrical part, and the second dense wound part being provided at an end part of the rough wound part on an opposite side of the first dense wound part,

a diameter of the first dense wound part is smaller than a diameter of the second dense wound part, and
a diameter of the rough wound part is smaller than the diameter of the first dense wound part.