公开(公告)号：US3927474A

公开(公告)日：1975-12-23

申请号：US38630373

申请日：1973-08-07

Applicant: LAITRAM CORP

Inventor： LAPEYRE JAMES M ,  FOWLER JOHN T

IPC: G01C17/26 ,  G01C19/36 ,  G01C17/18 ,  G06M1/272

CPC classification number: G01C17/26 ,  G01C19/36

Abstract: A magnetic compass in which the compass card and magnet are relatively movable with respect to each other such that only the magnet is gimballed to seek alignment with the earth''s magnetic field irrespective of the inclination of the compass card. The compass magnet is rotatably mounted within a gimbal assembly and is operative to become aligned with the axis of the earth''s magnetic field to seek the dip angle of the magnetic field while providing a rotational torque to cause rotation of the compass card to its balanced position indicative of compass heading. In alternative implementation, the compass magnet is maintained in substantially horizontal disposition to enhance the restoring torque.

Abstract translation: 指南针卡和磁铁相对于彼此相对移动的磁罗盘，使得只要磁铁被击球以寻求与地球磁场的对准，而与罗盘卡的倾斜无关。 指南针磁体可旋转地安装在万向架组件内并且可操作地与地球磁场的轴线对准以寻求磁场的倾角，同时提供旋转扭矩以使罗盘卡的旋转到其平衡位置 指南针标题。 在替代实施方案中，罗盘磁铁保持基本上水平的布置以增强恢复扭矩。