公开(公告)号：US3596567A

公开(公告)日：1971-08-03

申请号：US3596567D

申请日：1969-08-12

Applicant: MILTON L BENJAMIN ,  DAVID D WALKER ,  ERICKSON TOOL CO

Inventor： BENJAMIN MILTON L ,  WALKER DAVID D ,  CO ERICKSON TOOL

IPC: B23B31/30 ,  F15B20/00 ,  F15B11/08 ,  F15B13/042

CPC classification number: F15B20/004 ,  B23B31/302 ,  Y10T137/1098 ,  Y10T137/1153 ,  Y10T137/87193 ,  Y10T137/87225

Abstract: A fail-safe control valve assembly for rotatable fluid motors. The valve assembly rotates with the motor and a pair of free floating check valve members of the assembly are movable radially against their valve seats aided by centrifugal action to trap fluid in the motor in the event of loss of source pressure. One of the check valve members controls inlet flow and the other exhaust flow, or vice versa, depending upon the direction in which the motor is actuated. Valve spools exposed to the inlet and exhaust flow pressure differential act on the valve members to hold that valve member controlling exhaust flow removed from its valve seat. The spools are radially movable outward away from the valve seats to facilitate valve closing.

公开(公告)号：US1742432A

公开(公告)日：1930-01-07

申请号：US2040525

申请日：1925-04-03

Applicant: DAVID D WALKER

Inventor： AIKENS THOMAS N

IPC: B60B1/12

CPC classification number: B60B1/12

公开(公告)号：US1641366A

公开(公告)日：1927-09-06

申请号：US442425

申请日：1925-01-24

Applicant: DAVID D WALKER

Inventor： AIKENS THOMAS N

IPC: B21D39/02

CPC classification number: B21D39/02

公开(公告)号：US1426942A

公开(公告)日：1922-08-22

申请号：US52114321

申请日：1921-12-09

Applicant: DAVID D WALKER

Inventor： AIKENS THOMAS N

IPC: B60B1/00

CPC classification number: B60B1/00

公开(公告)号：US1596862A

公开(公告)日：1926-08-24

申请号：US49935421

申请日：1921-09-08

Applicant: DAVID D WALKER

Inventor： AIKENS THOMAS N

IPC: B21D51/00 ,  B21D53/26

CPC classification number: B21D51/00 ,  B21D53/26 ,  Y10T29/53717

公开(公告)号：US3941014A

公开(公告)日：1976-03-02

申请号：US542106

申请日：1975-01-20

Applicant: Milton L. Benjamin ,  David D. Walker

Inventor： Milton L. Benjamin ,  David D. Walker

IPC: B23Q16/10 ,  B23B29/32

CPC classification number: B23Q16/102 ,  Y10T74/1476 ,  Y10T74/1488

Abstract: A precision heavy duty indexer characterized in that the indexing member is hydraulically actuated to a locking position whereat it is locked to the indexer housing in desired precise indexed position without circumferential or radial play and without transmission of torque load to the indexer drive means or without transmission of radial load to the indexing member-housing bearings; and is hydraulically actuated to unlocking position whereat it is released from said housing for indexing movement and whereat it is engaged by said drive means operative to index the indexing member to the next indexed position. The indexer herein is further characterized in that the indexer drive means comprises a hydraulic motor driven worm which meshes with a worm wheel having driving engagement with said indexing member, said worm having a sensor-counter thereon to de-energize said hydraulic motor when the indexing member has been indexed through a predetermined angle from one indexed position to the next.

Abstract translation: 一种精密重型分度器，其特征在于，分度构件被液压致动到锁定位置，在该位置处，分度构件被锁定到所需的精确分度位置，而不会周期性地或径向地进行，并且没有传递扭矩负载到分度器驱动装置或没有传递 径向载荷到分度构件壳体轴承; 并且被液压致动到解锁位置，在该位置上它从所述壳体释放以进行分度运动，并且其中所述驱动装置与所述驱动装置接合以将分度构件索引到下一个分度位置。 本发明的分度器的特征还在于，分度器驱动装置包括一个液压马达驱动的蜗杆，其与具有与所述分度构件的驱动啮​​合的蜗轮啮合，所述蜗杆具有传感器计数器，以在分度时断开所述液压马达 构件已经从一个索引位置到另一个索引位置以预定角度被索引。

公开(公告)号：US1498771A

公开(公告)日：1924-06-24

申请号：US49637321

申请日：1921-08-29

Applicant: DAVID D WALKER

Inventor： AIKENS THOMAS N

IPC: B21D53/00 ,  B21D53/26

CPC classification number: B21D53/00 ,  B21D53/26 ,  Y10T29/49522