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Patent Searching and Data


Title:
NEW TELESCOPIC SEALING CYLINDER
Document Type and Number:
WIPO Patent Application WO/2019/218287
Kind Code:
A1
Abstract:
Disclosed is a new telescopic sealing cylinder, comprising a middle cylinder (3), a bottom cylinder (1), a sealing cylinder cover (4) and a sealing cover (7), wherein the sealing cylinder cover (4) is mounted on the middle cylinder (3); the middle cylinder (3) is movably connected to the bottom cylinder (1) by means of a slidable seal ring (2); an accommodation cavity (8) is formed between the sealing cylinder cover (4) and the sealing cover (7); an upper gas discharge hole (6) for enabling an inner cavity and the outside to be in communication, and a lower gas discharge hole (9) for enabling the inner cavity and the middle cylinder (3) to be in communication are provided in the accommodation cavity (8); and a sealing ring (10) is mounted inside the accommodation cavity (8), and the sealing ring (10) abuts against the lower gas discharge hole (9) by means of an elastic reset member (11). By means of the design of the sealing ring, gas generated inside the sealing cylinder is automatically discharged. In addition, by means of the design of the elastic reset member, the function of the sealing ring being capable of being automatically reset after the completion of gas discharge is realized.

Inventors:
LIN YONGCHAO (CN)
WU CHANG-HSIN (CN)
Application Number:
PCT/CN2018/087191
Publication Date:
November 21, 2019
Filing Date:
May 17, 2018
Export Citation:
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Assignee:
LIN YONGCHAO (CN)
WU CHANG HSIN (CN)
International Classes:
B65D51/16; B65D21/08; B65D53/02
Foreign References:
CN204368680U2015-06-03
US4140148A1979-02-20
CN202156631U2012-03-07
CN106586226A2017-04-26
CN101409246A2009-04-15
CN204416022U2015-06-24
US4549668A1985-10-29
US4146147A1979-03-27
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