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Title:
TWO-WAY HAND-DRAWN PNEUMATIC CYLINDER PISTON
Document Type and Number:
WIPO Patent Application WO/2016/008279
Kind Code:
A1
Abstract:
Provided is a two-way hand-drawn pneumatic cylinder piston, comprising a piston main body (1) provided with an inner hole (11) and outer hole (12) at its center position; a plurality of radially arranged partitions (17), which divide the space between the upper and lower surfaces of the piston main body (1) into two separate intake air-guiding chambers (3) and outlet air-guiding chambers (5) not in communication with each other, are arranged between the upper and lower surfaces of the piston main body (1); the intake air-guiding chamber (3) is in communication with the space in the inner hole (11); the outlet air-guiding chamber (5) is in communication with the space (X) between the outer hole (12) and the inner hole (11); a first cover plate (6) covering the outer end opening between the two partitions (17) dividing the intake air-guiding chamber (3) is fixed at said outer end opening; a second cover plate (7) covering the outer end opening between the two partitions (17) dividing the outlet air-guiding chamber (5) is fixed at said outer end opening. The entire piston has only two cover plate components requiring additional adhesive fixation; assembly is convenient, and the probability of air leaking is reduced.

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Inventors:
MEDICI, Gaetano (Via Belvedere 13, Brignano Gera d'Adda, 20053, IT)
Application Number:
CN2015/000482
Publication Date:
January 21, 2016
Filing Date:
July 01, 2015
Export Citation:
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Assignee:
GRI LEISURE AND SPORT EQUIPMENT CO., LTD. (No.32, Yangmeishuxia Shengli Village, Sanqishi Tow, Yuyao Zhejiang 2, 315412, CN)
International Classes:
F04B33/00; F04B39/00; F04B53/14
Foreign References:
CN204024975U2014-12-17
CN104196697A2014-12-10
CN103362776A2013-10-23
DE2005339B21977-09-08
CN2450405Y2001-09-26
TWM363516U2009-08-21
CN203412716U2014-01-29
US6648615B22003-11-18
US4842489A1989-06-27
Attorney, Agent or Firm:
NINGBO CHANNEL PATENT ATTORNEYS OFFICE (17D Sunshine Mansion, 65 South Jiefang RoadNingbo, Zhejiang 0, 315010, CN)
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