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:
Aug. 03, 1993
Filed:
Jan. 23, 1992
Applicant:
Inventor:
LeGrand A Daly, South Bend, IN (US);
Assignee:
L. A. Daly Company, South Bend, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166369 ; 166 53 ; 166 67 ; 166 751 ;
Abstract
Apparatus for continuously recovering oil-only from mature wells with typically low production. The apparatus includes a continuous chain which is suspended in the oil-containing portion of the well. By continuously moving the chain, oil is drawn out of the well and deposited in a collection box.