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公开(公告)号：US20170138377A1
公开(公告)日：2017-05-18
申请号：US14941259
申请日：2015-11-13
发明人： Joseph Edison Huseman , Eric Dale Larson , Jamie Clay Gamble , Wayne Harvey , Alexander McAuley , Juan Pedro Trevino
IPC分类号： F15B15/14
CPC分类号： F15B15/1471 , E21B17/07 , E21B19/004 , F15B15/02 , F15B15/1476 , F15B15/226 , F15B20/007 , F15B2211/8752
摘要： A mechanism to reduce load of a hydraulic cylinder having a body, a stem movable within the body, and a piston rod connected to the stem. The mechanism includes a mechanism body attached to the body and defining a recess, and a retainer attached to the mechanism adjacent the opening of the recess so that the retainer substantially fills the opening of the recess, and having an aperture that receives an end of the piston rod. The mechanism further includes a cap attached to the piston rod of the hydraulic cylinder within the recess, the cap having a diameter greater than the diameter of the aperture in the retainer, and a spring connected to the cap at a first end and to the retainer at a second end so that as the piston rod moves relative to the failsafe mechanism body, to reduce load transfer between the piston rod and the cylinder body.
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公开(公告)号：US09945401B2
公开(公告)日：2018-04-17
申请号：US14941259
申请日：2015-11-13
发明人： Joseph Edison Huseman , Eric Dale Larson , Jamie Clay Gamble , Wayne Harvey , Alexander McAuley , Juan Pedro Trevino
CPC分类号： F15B15/1471 , E21B17/07 , E21B19/004 , F15B15/02 , F15B15/1476 , F15B15/226 , F15B20/007 , F15B2211/8752
摘要： A mechanism to reduce load of a hydraulic cylinder having a body, a stem movable within the body, and a piston rod connected to the stem. The mechanism includes a mechanism body attached to the body and defining a recess, and a retainer attached to the mechanism adjacent the opening of the recess so that the retainer substantially fills the opening of the recess, and having an aperture that receives an end of the piston rod. The mechanism further includes a cap attached to the piston rod of the hydraulic cylinder within the recess, the cap having a diameter greater than the diameter of the aperture in the retainer, and a spring connected to the cap at a first end and to the retainer at a second end so that as the piston rod moves relative to the failsafe mechanism body, to reduce load transfer between the piston rod and the cylinder body.
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