发明申请
- 专利标题： COMPASS DEVICE
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申请号： US16693580申请日： 2019-11-25
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公开(公告)号： US20210055106A1公开(公告)日： 2021-02-25
- 发明人: Chiao-Hu CHANG , Wen-Ching CHANG , Shen-Wei CHANG
- 申请人： CHUAN CHING MECHANICAL INDUSTRIAL CO., LTD.
- 申请人地址： TW Taichung City
- 专利权人： CHUAN CHING MECHANICAL INDUSTRIAL CO., LTD.
- 当前专利权人： CHUAN CHING MECHANICAL INDUSTRIAL CO., LTD.
- 当前专利权人地址： TW Taichung City
- 优先权： TW108130041 20190822
- 主分类号： G01C17/38
- IPC分类号： G01C17/38 ; G01C21/26 ; G01C17/18 ; G01C17/20
摘要：
A compass device includes a base seat, a vial unit received in an accommodation hole of the base seat, an azimuth unit rotatably sleeved around the vial unit, a first spring wire disposed to resiliently retain the vial unit to the azimuth unit for magnetic declination adjustment, and a second spring wire disposed to resiliently retain the azimuth unit to the base seat for bearing angle measurement.
公开/授权文献
- US11041721B2 Compass device 公开/授权日：2021-06-22