Title:
パイプまたは棒を把持するための装置
Document Type and Number:
Japanese Patent JP2004510934
Kind Code:
A
Abstract:
A device for gripping the external wall surface of a pipe or bar. The device includes a tubular body having at least one end open for insertion of a pipe or bar, and a cage with balls or rollers cooperating with a first tapered internal wall part of the body. A resilient mechanism pushes the cage in an axial direction to cause the balls or rollers to grip the external wall of an inserted pipe or bar. The device also has a compressible member located within the body and cooperating with a second tapered inner wall part of the body and movable relative thereto when increased fluid pressure is present within the body. Under increased pressure it also grips the external wall of the inserted pipe or bar.
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Inventors:
Warm Three, Owen
Robert Emmet
Robert Emmet
Application Number:
JP2002532842A
Publication Date:
April 08, 2004
Filing Date:
October 04, 2001
Export Citation:
Assignee:
BS W Limited
International Classes:
F16L37/06; F16L37/092; F16L37/23; F16L17/02; (IPC1-7): F16L37/06; F16L17/02; F16L37/23
Attorney, Agent or Firm:
Hiroshi Arafune
Yoshio Arafune
Yoshio Arafune