Title:
INTERNAL PRESSURE TYPE AUTOMATIC COMPENSATION PISTON
Document Type and Number:
WIPO Patent Application WO/2018/086510
Kind Code:
A1
Abstract:
An internal pressure type automatic compensation piston. The piston comprises a piston body (1), a sealing body (2) mounted on the piston body (1), and a gland (5). The sealing body (2) is located between the piston body (1) and the gland (5). A passage (7) is provided in the piston body (1). A check valve (6) is provided in the passage (7). An annular internal cavity (8) is provided between the piston body (1) and the sealing body (2), and is communicated with an internal cavity of a cylinder sleeve by means of the passage (7). A sealing ring (14) is mounted between the piston body (1) and the sealing body (2). The piston solves the technical problems in the existing piston of a poor sealing property and proneness to leakage of a pressure medium.
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Inventors:
ZHANG JUN (CN)
Application Number:
PCT/CN2017/109697
Publication Date:
May 17, 2018
Filing Date:
November 07, 2017
Export Citation:
Assignee:
ZHANG JUN (CN)
International Classes:
F16J1/02
Foreign References:
| CN206280489U | 2017-06-27 | |||
| CN204942520U | 2016-01-06 | |||
| CN201310620Y | 2009-09-16 | |||
| CN202884000U | 2013-04-17 | |||
| CN201843992U | 2011-05-25 | |||
| CN203847474U | 2014-09-24 | |||
| JP2011032938A | 2011-02-17 |
Attorney, Agent or Firm:
XI'AN ZHIBANG PATENT & TRADEMARK AGENT CO., LTD. (CN)
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