公开(公告)号：US6032346A

公开(公告)日：2000-03-07

申请号：US25542

申请日：1998-02-18

申请人： Robert L. Holland

发明人： Robert L. Holland

IPC分类号： A47C1/16 ,  B25B27/00 ,  B23P11/00

CPC分类号： A47C1/16 ,  B25B27/0092 ,  Y10T29/49936 ,  Y10T29/53709 ,  Y10T29/53791

摘要： A bleacher seat cap installation tool is provided that has a first guide surface that slides along an edge of the seat board of the bleacher seat to be retrofit, and a second guide surface that guides a free end of a bleacher seat cap into position. The tool enables a single installer to install a bleacher seat cap quickly and easily, while avoiding injury or marring of the exterior surface of the bleacher seat cap.

摘要翻译： 提供了一种漂白器座盖安装工具，其具有沿着漂白器座椅的座板的边缘滑动以便改造的第一引导表面和将漂白器座盖的自由端引导到位的第二引导表面。 该工具使单个安装人员能够快速方便地安装漂白剂座盖，同时避免漂白剂座盖的外表面受伤或损坏。

公开(公告)号：US06182344B2

公开(公告)日：2001-02-06

申请号：US09453979

申请日：1999-12-02

申请人： Robert L. Holland

发明人： Robert L. Holland

IPC分类号： B23P1100

CPC分类号： A47C1/16 ,  B25B27/0092 ,  Y10T29/49936 ,  Y10T29/53709 ,  Y10T29/53791

摘要： A bleacher seat cap installation tool is provided that has a first guide surface that slides along an edge of the seat board of the bleacher seat to be retrofit, and a second guide surface that guides a free end of a bleacher seat cap into position. The tool enables a single installer to install a bleacher seat cap quickly and easily, while avoiding injury or marring of the exterior surface of the bleacher seat cap.

摘要翻译： 提供了一种漂白器座盖安装工具，其具有沿着漂白器座椅的座板的边缘滑动以便改造的第一引导表面和将漂白器座盖的自由端引导到位的第二引导表面。 该工具使单个安装人员能够快速方便地安装漂白剂座盖，同时避免漂白剂座盖的外表面受伤或损坏。

公开(公告)号：US4354554A

公开(公告)日：1982-10-19

申请号：US142096

申请日：1980-04-21

申请人： Michael B. Calhoun ,  Robert L. Holland, Jr. ,  Paul D. Scott

发明人： Michael B. Calhoun ,  Robert L. Holland, Jr. ,  Paul D. Scott

IPC分类号： E21B33/12 ,  E21B34/00 ,  E21B34/10 ,  E21B43/12 ,  E21B43/38 ,  F04D13/10 ,  E21B34/16

CPC分类号： E21B43/12 ,  E21B33/12 ,  E21B34/105 ,  E21B43/38 ,  F04D13/10 ,  E21B2034/002

摘要： A wire line removable well safety valve in an oil and gas well completion design including a tubing string, a well packer around the tubing string sealing with the well casing, and a submergible well pump on the tubing string below the packer. The safety valve controls flow of pumped well fluids through the tubing string, directs separated gas into the casing annulus around the tubing string above the packer, and shuts off the flow of pumped fluids and separated gas to the surface while permitting recirculation of pumped well fluids between the annulus and tubing string below the packer. The safety valve includes a housing having separate central and annular flow passages for pumped fluids and separated gas, respectively, a ball valve for controlling flow of pumped fluids in the central flow passage, an annular bypass valve for controlling flow of separated gas along the annular flow passage, and a recirculating valve between the central and annular flow passages for recirculation of pumped fluids when the ball and bypass valves are closed. The safety valve is held open hydraulically from the surface and includes means for closing the valve when hydraulic pressure fails, shutting off the flow of pumped fluids and bypass gas while permitting continuous operation of the well pump by recirculating pumped fluids below the packer.

摘要翻译： 一种油气井完井设计中的线路可拆卸井安全阀，包括油管柱，围绕油管柱的油井封隔器与井套密封，以及在封隔器下方的油管柱上的潜水井泵。 安全阀控制泵送井流体通过油管柱的流动，将分离的气体引导到封隔器上方的油管柱周围的壳体环空中，并且将泵送流体的流动和分离的气体切断到表面，同时允许泵送井液再循环 在封隔器下面的环形和油管柱之间。 安全阀包括一个壳体，分别具有用于泵送流体和分离气体的分离的中心和环形流动通道，用于控制中心流动通道中的泵送流体流动的球阀，用于控制分离气体沿环形流动的环形旁通阀 流通道和中央和环形流动通道之间的循环阀，用于在球和旁通阀关闭时循环泵送流体。 安全阀从表面液压地保持打开，并且包括当液压失效时关闭阀门的装置，关闭泵送流体的流动和旁路气体，同时允许通过将封闭器下方的泵送流体再循环来连续操作井泵。