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:
Feb. 11, 1992
Filed:
Sep. 07, 1990
Applicant:
Inventor:
Henri Cholet, Le Pecq, FR;
Assignee:
Institut Francais du Petrole, Rueil Malmaison, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166312 ; 15104061 ; 134 2212 ; 134 24 ; 1341 / ;
Abstract
According to one significant characteristic of this invention, the device includes a nozzle (38) for projecting cleaning fluid and connected to a deflector (44) which directs the fluid jet in the direction of the wall of the drain and in particular towards the lower wall of said drain where solid sediments or deposits accumulate. In one embodiment the fluid jet projected by the nozzle (38) and loaded with particles removed from the drain is sucked in via a Venturi effect and the fluid and particles are brought back to the surface.