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. 12, 1988
Filed:
Oct. 25, 1985
Applicant:
Inventors:
Frederick L Maltby, Jenkintown, PA (US);
Edward R Woerner, North Wales, PA (US);
Thomas E Meacham, Jr, Holland, PA (US);
Steven R Petersen, Ambler, PA (US);
Assignee:
Drexelbrook Controls, Inc., Horsham, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01F / ; G01G / ;
U.S. Cl.
CPC ...
324 / ; 340620 ; 7330 / ; 361284 ;
Abstract
A probe comprises a plurality of longitudinally extended conductors forming a probe electrode, a laterally displaced ground electrode and two laterally displaced active guard electrodes interposed between the probe electrode and the ground electrode. The conductors are surrounded by solid insulation and the probe guard electrodes are driven at substantially the same potential as the probe electrode. The probe is utilized to measure the condition of materials in which the probe is immersed.