Class 166/130 - Packer expanded by upper valve

Subclass of Class 166 - Wells
Definition: Devices wherein the packer blocking portion is expanded
No. of patents: 2
Last issue date: 11/28/2000

Number	Title	Issue Date
6152224	Downhole apparatus Apparatus for use in setting packers and other fluid actuated devices includes a tubular body (222), a valve (228) for controlling the flow of well fluid through a port (234) in the body (222) and a valve actuator (224) mounted on the body (222) and movab...	11/28/2000
4332267	Ball valve assembly An improved mounting and sealing assembly is provided for a rotating ball valve required to open under increased differential pressures and close against high flow rates. The valve assembly includes a trunnion-mounted ball and two pressure biased sealing ...	06/01/1982

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