Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Maurice A. Williams0
Robert J. Williams0
Date of Patent
December 15, 2009
Patent Application Number
11579756
Date Filed
May 9, 2005
Patent Primary Examiner
Patent abstract
A choke for a screw device include a choking plug comprising a plurality of choking plug segments, and a choking ring cooperating with the choking plug, the choking ring comprising a plurality of choking ring segments. The plug segments may be releasably mounted to a hub is releasably mounted to a shaft of the screw device, and the choking ring segments releasably mounted to the barrel.
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