Pumps – Expansible chamber type – Valved piston
Reexamination Certificate
2008-04-15
2008-04-15
Kramer, Devon C. (Department: 3746)
Pumps
Expansible chamber type
Valved piston
C417S550000, C417S551000
Reexamination Certificate
active
10479777
ABSTRACT:
A suction valve for reciprocating compressor includes a fixation part, which receives a driving force of a reciprocating motor, and is fixed-combined to the front end surface of a piston performing linear reciprocal movement in the cylinder, a switching part for switching a hollow channel formed to penetrate the piston having a certain area, and a plurality of arms for connecting the switching part and the fixation part to make the switching unit behave in a certain displacement section having the fixation part as a fixed point. Receiving driving force of the reciprocating motor, the piston is bent and straighten by the pressure difference, and stress is distributed evenly in the above process, and minimizing bulking phenomenon to prevent damage of a switching part. Also, the responsiveness of the valve can be improved.
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Untranslated Office Action issued by the Japanese Patent Office on Oct. 31, 2006 in connection with corresponding Japanese application No. 2002-591671.
Untranslated Office Action issued by the Chinese Patent Office on Aug. 26, 2005 in connection with corresponding Chinese application No. 01823413.5.
English translation of relevant portions of Chinese Patent Office Action issued Aug. 26, 2005 submitted in lieu of statement of relevancy of prior art teachings to the instant application.
Hyeon Seong-Yeol
Kang Kyung-Seok
Woo Sung-Tae
Hamo Patrick
Kramer Devon C.
LG Electronics Inc.
Ostrolenk Faber Gerb & Soffen, LLP
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