公开(公告)号：US10518390B2

公开(公告)日：2019-12-31

申请号：US15301774

申请日：2015-03-04

Applicant: PASCAL ENGINEERING CORPORATION

Inventor： Takuya Takahashi

IPC: B23Q3/08 ,  B25B5/06 ,  B25B5/16

Abstract: The fluid clamp apparatus includes: a sliding piston member that vertically partitions its cylinder bore; first and second fluid pressure operation chambers; a fluid passage that, during an upward light-load stroke of the piston member, causes the back pressure in the second fluid pressure operation chamber to be received by the output rod to advance the output rod; a force multiplying mechanism that, during a heavy-load stroke of the piston member, multiplies the force acting on the piston member and transmits this force to the output rod; and a link mechanism that, during unclamping lowering operation of the piston member, links together the output rod and the piston member after lowering by a predetermined stroke amount.

公开(公告)号：US11458642B2

公开(公告)日：2022-10-04

申请号：US16612910

申请日：2018-05-31

Applicant: PASCAL ENGINEERING CORPORATION

Inventor： Takuya Takahashi

IPC: B25J15/04 ,  B25J19/00 ,  F16B7/04

Abstract: A locking mechanism (6) of the robot arm coupling device (1) includes: a concave engagement portion (3a) on the master plate (3); convex engagement portion (4a) on the tool plate (4) for inserting into the concave engagement portion (3a); a plurality of steel balls (16) installed at an external circumferential wall portion (15) of the concave engagement portion (3a), and are capable of being changed over between locking positions and unlocking positions; and an annular fluid pressure cylinder (20) capable of changing over the positions of the plurality of steel balls (16); and a space is defined more radially inward than the plurality of steel balls (16) and the fluid pressure cylinder (20).