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:
Nov. 11, 1986
Filed:
Nov. 27, 1984
Applicant:
Inventor:
Alfred Hill, Bath, GB;
Assignee:
AEPLC, Rugby, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
1510 / ; 1510404 ; 152565 ; 15308 ; 166 82 ; 175 84 ;
Abstract
A scraper ring system for removing fluid from a relatively moving cylindrical surface such as a piston rod which comprises a series of overlapping blades or leaves which are pressed against the rod surface at an acute angle either by a garter spring or when the blades are part of a continuous strip, by the natural resilience of the strip and blades. The blades are located in a housing and passages are provided for the discharge of any removed fluid.