The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 1978
Filed:
Mar. 07, 1977
Nils Ruder, Fareham Hants, GB;
Normark Corporation, Minneapolis, MN (US);
Abstract
A compass design particularly for wrist mounted and hand held compasses which includes a first exterior, fluid tight case having a pair of pivot members respectively on the upper and lower surfaces thereof for rotatably mounting a second interior case member which second case member is provided with a horizontally pivotal magnet body which magnet body is permitted to move a predetermined degree with respect to a normal horizontal position to accommodate for magnetic inclination and which outer case is filled with liquid to place the inner case in substantial equilibrium between the pivot members such that the inner magnet bearing case will be substantially frictionally free to rotate in the outer case. The mounting for the magnet body within the inner case allows the magnet body to oscillate and therefore provide free movement even though the magnet is not held in a horizontal position.