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:
Jan. 09, 1979
Filed:
Oct. 04, 1976
Hugh M Arthur, London, GB;
Timothy C Harrington, London, GB;
Molins Limited, , GB;
Abstract
Apparatus for determining the height of a column of tobacco or similar particulate material in a downwardly extending channel, comprising a first capacitor, a second capacitor formed partly by an electrode plate extending above and below the desired average level of the top surface of the tobacco column in the channel during use, a third capacitor formed partly by an electrode plate lying permanently below the top surface of the tobacco column, and an electrical circuit which compares the value of the second capacitor with the sum of the values of the first and third capacitors and from which output signal can be obtained which reflects that comparison.