Valves and valve actuation – Rotary valves – Ball valve
Reexamination Certificate
2006-01-24
2006-01-24
Look, Edward K. (Department: 3751)
Valves and valve actuation
Rotary valves
Ball valve
C137S315180
Reexamination Certificate
active
06988709
ABSTRACT:
A bearing retainer for a valve having an internally mounted stem and valve member with a trunnion and a bearing positioned thereabout is disclosed. The bearing retainer has a retainer body having a bearing receiving opening extending from a first side to an opposed second side and a stem receiving slot formed in the first side thereof in open communication with the bearing receiving opening. The retainer body is disposable about the bearing, and the retainer body is configured such that the retainer body is rotatable about the trunnion upon the valve member, the bearing, and the bearing retainer being positioned in the valve chamber with the stem engaged with the valve member.
REFERENCES:
patent: 3277919 (1966-10-01), Piccardo
patent: 3497178 (1970-02-01), Priese
patent: 4254793 (1981-03-01), Scaramucci
patent: 4342330 (1982-08-01), Wieveg et al.
patent: 4867414 (1989-09-01), Hubacek
Grove, Energy Valve Division; Grove Ball Valves catalog; B-5 Material Specifications; Nov. 1998; p. 5; Bulletin No. 209; Grove; stafford, Texas.
Cooper Cameron Corporation; 1998-99 Product Source Book; DynaSeal® 370CT Trunnion Ball Valves; Jun. 1998; p. 11; vol. 1; Copper Cameron Corporation; Missouri City, Texas.
Dunlap Codding & Rogers P.C.
Fristoe Jr. John K.
Look Edward K.
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