Disclosed is an oil well sucker rod having a fiberglass rod with steel connectors on each end. Each connector has a rod-receiving receptacle having an open end, a closed end, and a plurality of axially spaced annular, tapered surfaces. The taper angles of the tapered surfaces are progresssively less toward the open end of the receptacle. An annular centering surface within the receptacle engages the end of the rod to the center the rod within the connector. A plurality of evenly spaced dimples on the connector extend into the receptacle to the center the rod within the connector at a point spaced from the centering surface.
申请公布号
US4919560(A)
申请公布日期
1990.04.24
申请号
US19890344673
申请日期
1989.04.28
申请人
FIBERGLASS TECHNOLOGIES, INC.
发明人
RUTLEDGE, JR., WOODROW T.;RUTLEDGE, RUSSELL P.;JONES, T. MIKE;MCCOWN, DON E.;HODNETT, J. TOM