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:
Dec. 12, 1978
Filed:
Jun. 22, 1977
Applicant:
Inventor:
Robert L Fleischer, Schenectady, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
250253 ;
Abstract
A method and apparatus are described for determining the occurrence or non-occurrence of subsurface air flow and, in the event of the occurrence of subsurface air flow, being able to determine its direction into or out of the earth. The determinations are accomplished by the use of a pair of alpha particle detectors, each of which is disposed in a protective enclosure to constitute a detector unit. A pair of such units is employed, the two units being buried in the earth spaced from each other and at different depths. Readings detecting alpha particle emission are taken on both units and compared.