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:
Jul. 09, 1991
Filed:
Apr. 12, 1990
James Martucci, Libertyville, IL (US);
Robert Lewis, Lindenhurst, IL (US);
Dawn C Matthews, Grayslake, IL (US);
Randall A Zielsdorf, Whitefish Bay, WI (US);
Clintec Nutrition Co., Deerfield, IL (US);
Abstract
A filter system for mass/weight apparatus that produces an electrical signal correlated to a mass/weight including a mechanical design for the apparatus so that the resonant vibrational frequency thereof falls above signal components of interest in the electrical signal, a fifth order low pass analog signal, and a digital low pass filter having 21/2 poles at a cut-off frequency designated so as to preserve signed characteristics in the signal of interest and significantly attenuate signal characteristics due to resonant vibrational noise.