Patent ID: 6973732
Filing Date: 2005-12-13
Classification: G01C

Abstract:
1. A magnetic compass comprising: a base having a hollow base body and a top cover covering said hollow base body, said hollow base body having a receiving chamber, a top opening in a top side of said receiving chamber, a battery chamber, a battery insertion opening in a top side of said battery chamber, and an illuminant chamber in communication between said receiving chamber and said battery chamber, said top cover closing said top opening of said hollow base body, said top cover having a view window corresponding to said receiving chamber and a through hole corresponding to said battery chamber; a compass body situated within said receiving chamber of said hollow base body of said base, said compass body having a housing, a magnetic needle pivotally mounted within said housing, and an indication card mounted in said housing; a battery set mounted within said battery chamber, said battery set having a first terminal thereof aimed at said battery insertion opening and a second terminal; an illuminant situated within said illuminant chamber and aimed at a periphery of said compass body, said illuminant having a first terminal suspended in said battery insertion opening and a second terminal; a push button supported on the first terminal of said illuminant above said battery chamber and partially inserted through the through hole of said top cover to the outside of said base for pressing by the user to force the first terminal of said illuminant downwards into contact with the first terminal of said battery set; and a top lid pivotally connected with one end thereof to said base by a pivot for covering said base, said top lid having a biconvex lens mounted therein; wherein said hollow base body further comprises a locating chamber disposed at one side of and in communication with said battery chamber; said magnetic compass further comprises an electrically conductive member for connecting one terminal of said battery set to the second terminal of said illuminant, said conductive member having a base frame mounted in said locating chamber, and a contact portion extended from said base frame and inserted into said battery chamber and pressed on the second terminal of said battery set; the second terminal of said illuminant is electrically connected to said base frame of said conductive member.