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Title:
サーボ制御の液圧ピストンで使用する機械的な止め具を提供するための装置、およびそれを操作する方法
Document Type and Number:
Japanese Patent JP4359559
Kind Code:
B2
Abstract:
Apparatus, and an accompanying method for use therein, that utilizes working and stopping servo-controlled hydraulic pistons wherein the stopping piston acts as a controlled mechanical stop for the working piston. Both pistons are spaced apart along and coaxially arranged around a common shaft, with each piston moving in a separate cylinder. The working piston is securely attached to the shaft, while the shaft moves through a central, longitudinal bore of the stopping piston. The stopping piston effectively "floats" in its cylinder and produces a greater force than the working piston. A radially extending stop element, situated on the shaft, has a surface configured to abuttingly engage with a complementary surface on the stopping piston such that the stopping piston, once appropriately positioned, controllably stops continued movement of the working piston in a very short time and over a very short distance with little strain induced in the apparatus.

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Inventors:
Ferguson, Hugo S.
Chen, Wei Chen
Application Number:
JP2004507796A
Publication Date:
November 04, 2009
Filing Date:
May 16, 2003
Export Citation:
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Assignee:
Dynamic Systems Incorporated
International Classes:
F15B9/08; F15B15/24; F15B3/00; G01N3/36; G01N3/00
Domestic Patent References:
JP3093605U
JP58128513A
JP6010605U
JP2000167699A
Attorney, Agent or Firm:
Fukami Hisaro
Morita Toshio
Yoshihei Nakamura
Yui Horii
Noto Kuto
Sakai Masayuki