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:
Oct. 04, 1988
Filed:
Jan. 12, 1987
Applicant:
Inventor:
Peter R Turner, Church Brampton, GB;
Assignee:
Molins, PLC, Milton Keynes, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73597 ; 198524 ; 209536 ;
Abstract
The position of a rod-like article of the tobacco industry is detected by measuring the delay in receiving sound transmitted towards and reflected from the article. In a preferred arrangement a stack level detector comprises a transmitter (22) for pulsed ultrasound (above 20 kHz), a receiver (24) and a circuit (10) for measuring the delay. The circuit (10) may include a latch (30) which generates regular pulses having duration corresponding to the delay.