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Title: Expanded-ring swab cup cage

Abstract

A reinforcement cage, useful in well swab cups of the type having an annular body of elastomeric material with an axial bore extending it, is described. The cage includes a series of axially disposed annularly-spaced wire members, held at their lower ends between an outer ring of dimensionally stable hardened metal and an inner ring of softer metal which is initially inserted within the wire members and subsequently radially expanded to confine them tightly between the rings which form the base of the cup. The outer ring has an inwardly extending flange covering the lower ends of the wires and the inner ring, and the inner ring has an upwardly extending portion terminating above a flex zone of the wires and above the level of the outer ring to help prevent slumping of the elastomeric body downward and outward between the wire members. (5 claims)

Inventors:
Publication Date:
OSTI Identifier:
5005242
Patent Number(s):
US 3724337
Assignee:
Oil States Rubber Co.
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 18 May 1971
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; OIL WELLS; CLEANING; WELL SERVICING; EQUIPMENT; DESIGN; RINGS; SEALS; WIRES; WELLS; 020300* - Petroleum- Drilling & Production

Citation Formats

Richardson, M R. Expanded-ring swab cup cage. United States: N. p., 1973. Web.
Richardson, M R. Expanded-ring swab cup cage. United States.
Richardson, M R. Tue . "Expanded-ring swab cup cage". United States.
@article{osti_5005242,
title = {Expanded-ring swab cup cage},
author = {Richardson, M R},
abstractNote = {A reinforcement cage, useful in well swab cups of the type having an annular body of elastomeric material with an axial bore extending it, is described. The cage includes a series of axially disposed annularly-spaced wire members, held at their lower ends between an outer ring of dimensionally stable hardened metal and an inner ring of softer metal which is initially inserted within the wire members and subsequently radially expanded to confine them tightly between the rings which form the base of the cup. The outer ring has an inwardly extending flange covering the lower ends of the wires and the inner ring, and the inner ring has an upwardly extending portion terminating above a flex zone of the wires and above the level of the outer ring to help prevent slumping of the elastomeric body downward and outward between the wire members. (5 claims)},
doi = {},
url = {https://www.osti.gov/biblio/5005242}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1973},
month = {4}
}