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:
Nov. 17, 1987
Filed:
Sep. 23, 1985
Applicant:
Inventors:
Charles L Nemnich, Longmont, CO (US);
Charles D Hoyt, Northglenn, CO (US);
Assignee:
Ferrotec, Inc., Broomfield, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01P / ;
U.S. Cl.
CPC ...
7351 / ; 7351 / ; 73654 ;
Abstract
An accelerometer comprising a ferrofluid coated permanent magnet as a proof mass mounted for substantially friction-free movement in a hollow vessel on which vessel are mounted three coils that are used with an electrical circuit to detect and measure movement of the proof mass in response to an outside force and to return the proof mass to a null position.