公开(公告)号：US20190153819A1

公开(公告)日：2019-05-23

申请号：US15818305

申请日：2017-11-20

申请人： Britain A. Fisher ,  Timothy Cragin ,  Jason Allen ,  Rick Patterson ,  Douglas J. Lehr ,  Emily Hanson

发明人： Britain A. Fisher ,  Timothy Cragin ,  Jason Allen ,  Rick Patterson ,  Douglas J. Lehr ,  Emily Hanson

IPC分类号： E21B34/10

CPC分类号： E21B34/108 ,  E21B34/103 ,  E21B2034/007

摘要： A slow response time tool including a biasing arrangement, a piston in operable communication with the biasing arrangement, a chamber receptive to the piston, a retardation arrangement defining a helical pathway in fluid communication with the chamber.

公开(公告)号：US10550666B2

公开(公告)日：2020-02-04

申请号：US15818305

申请日：2017-11-20

申请人： Britain A. Fisher ,  Timothy Cragin ,  Jason Allen ,  Rick Patterson ,  Douglas J. Lehr ,  Emily Hanson

发明人： Britain A. Fisher ,  Timothy Cragin ,  Jason Allen ,  Rick Patterson ,  Douglas J. Lehr ,  Emily Hanson

IPC分类号： E21B34/10 ,  E21B34/00

摘要： A slow response time tool including a biasing arrangement, a piston in operable communication with the biasing arrangement, a chamber receptive to the piston, a retardation arrangement defining a helical pathway in fluid communication with the chamber.