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:
May. 04, 1993
Filed:
Mar. 25, 1991
Applicant:
Inventor:
John P Downing, Jr, Port Townsend, WA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
73 6175 ; 422 681 ; 422 8213 ;
Abstract
A sensor for detecting particle flux in a stream has a hollow armored housing enclosing a vibration transducer coupled to the housing for detecting particles impinging on the housing. Also enclosed in the housing is a data logging and control unit for recording particle flux for later retrieval. An ultrasonic acoustic beacon for signalling the condition of the sensor and for indicating the position of the sensor in the event of displacement is also mounted on the sensor. Additionally a brightly colored long buoyant pennant is attached for enabling visual relocation of a displaced sensor.