Direction indicating compasses
AssigneeYeoman Marine Limited
InventorsHugh John Agnew, Gwyn David Walter Parfitt
Life of this patent
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Abstract
A portable compass comprises a body (18) and a compass needle (22) mounted on the body for indicating North/South. A bearing signal representing a required bearing is received, for example from a GPS receiver, and a display (30) responsive to the bearing signal receiving means indicates a required position of the compass needle relative to the body. A fixed indicator (26) on the body points to the required bearing when the body is oriented so that the compass needle is in the required position relative to the body.
Claims13
A portable compass for directing a user toward a predetermined geographical location, the compass comprising:
- a body (18);
- a compass needle (22) mounted on the body for indicating North/South;
- means (16) for receiving a bearing signal representing a required bearing to said predetermined geographical location;
- a display (30) responsive to the bearing signal receiving means to indicate a required position of the compass needle relative to the body;
- and
- a fixed indicator (26) on the body which points towards the predetermined geographical location when the body is oriented so that the compass needle is in the required position relative to the body indicated by the display.
A portable direction indicating device for directing a user toward a predetermined geographical location, the device comprising:
- a body;
- means mounted on the body for indicating the direction of a reference bearing regardless of the orientation of the body;
- means for receiving a bearing signal representing a required bearing to said predetermined geographical location relative to said reference bearing;
- a display responsive to the bearing signal receiving means to indicate a required position of the reference bearing indicating means relative to the body;
- and
- a fixed indicator on the body which points towards the predetermined geographical location when the body is oriented so that the reference bearing indicating means is in the required position relative to the body indicated by the display.
A portable compass comprising a body;
- a direction indicator mounted on the body and arranged to indicate a direction of a reference bearing regardless of an orientation of the body;
- a receiver of a bearing signal that represents a required bearing;
- a display responsive to the receiver to indicate a required position of the direction indicator relative to the body;
- and
- an indicator on the body arranged to point to the required bearing as the body becomes oriented into a position with respect to the direction indicator so that the direction indicator enters into the required position relative to the body.
Dependencies are inferred from the claim text.