Title:
PROBE OF TRENCHLESS GUIDANCE INSTRUMENT
Document Type and Number:
WIPO Patent Application WO/2019/157957
Kind Code:
A1
Abstract:
A probe of a trenchless guidance instrument, comprising a housing (1) and a transmitting antenna (111) provided in the housing (1). The transmitting antenna (111) comprises a magnetic core (1111) and a coil (1112). There are a plurality of magnetic cores (1111), which are sequentially provided along a length direction of the probe; the coil (1112) is wound around the periphery of the plurality of magnetic cores (1111). By sequentially providing a plurality of magnetic cores (1111) along a length direction of a probe to form the magnetic cores of a transmitting antenna (111), the magnetic cores can easily be produced, configuration of insulating parts is reduced, assembly of the transmitting antenna is facilitated, and production costs are reduced.
Inventors:
REN CHAO (CN)
GE CHANGPING (CN)
JIN XIANGXIANG (CN)
GE CHANGPING (CN)
JIN XIANGXIANG (CN)
Application Number:
PCT/CN2019/073868
Publication Date:
August 22, 2019
Filing Date:
January 30, 2019
Export Citation:
Assignee:
NINGBO JINDI ELECTRONIC CO LTD (CN)
International Classes:
E21B47/02
Foreign References:
| CN208010332U | 2018-10-26 | |||
| CN104373112A | 2015-02-25 | |||
| CN108708693A | 2018-10-26 | |||
| CN203822289U | 2014-09-10 | |||
| CN103336309A | 2013-10-02 | |||
| CN105277236A | 2016-01-27 | |||
| CN201496063U | 2010-06-02 | |||
| US7111693B1 | 2006-09-26 |
Attorney, Agent or Firm:
NINGBO CHANNEL PATENT ATTORNEYS OFFICE (CN)
Download PDF: