公开(公告)号：US3822067A

公开(公告)日：1974-07-02

申请号：US32162273

申请日：1973-01-08

Applicant: DRESSER IND

Inventor： BERRY R ,  BLACKWELL H

IPC: E21B37/08 ,  E21B37/10 ,  F16J15/00

CPC classification number: E21B37/08 ,  E21B37/10

Abstract: An improved reinforcing structure and method of making said structure are disclosed. The improved reinforcing structure is a polyfurcated cylinder having an integral base portion and a tines portion. The method of manufacture includes the steps of rolling a polyfurcated plate with an integral base and tines portion, rolling the base portion into a cylindrical shape and securing the abutting ends of the base.

Abstract translation: 公开了一种改进的加强结构和制造所述结构的方法。 改进的加强结构是具有整体基部和尖齿部分的多孔圆筒。 制造方法包括：将具有整体基部和尖齿部分的多孔板轧制的步骤，将基部滚动成圆柱形并固定基座的邻接端。

公开(公告)号：US3722053A

公开(公告)日：1973-03-27

申请号：US3722053D

申请日：1971-07-26

Applicant: DRESSER IND

Inventor： BERRY R ,  BLACKWELL H

IPC: E21B37/08 ,  E21B37/10 ,  B23P15/16

CPC classification number: E21B37/10 ,  E21B37/08 ,  Y10T29/49609

Abstract: An improved reinforcing structure and method of making said structure are disclosed. The improved reinforcing structure is a polyfurcated cylinder having an integral base portion and a tines portion. The method of manufacture includes the steps of rolling a polyfurcated plate with an integral base and tines portion, rolling the base portion into a cylindrical shape and securing the abutting ends of the base.

Abstract translation: 公开了一种改进的加强结构和制造所述结构的方法。 改进的加强结构是具有整体基部和尖齿部分的多孔圆筒。 制造方法包括：将具有整体基部和尖齿部分的多孔板轧制的步骤，将基部滚动成圆柱形并固定基座的邻接端。

公开(公告)号：US3722527A

公开(公告)日：1973-03-27

申请号：US3722527D

申请日：1969-03-11

Applicant: DRESSER IND

Inventor： BLACKWELL H

IPC: E21B43/12 ,  F04F1/08

CPC classification number: E21B43/123 ,  Y10T137/2934

Abstract: A gas lift valve used with well tubing, said valve employing a bellows means, pilot valve, and a power valve, the pilot valve being unconnected with the bellows means and differentially operated with a spring assist.