Pumps – Condition responsive control of drive transmission or pump... – Adjustable cam or linkage
Reexamination Certificate
2007-05-22
2007-05-22
Koczo, Jr., Michael (Department: 3746)
Pumps
Condition responsive control of drive transmission or pump...
Adjustable cam or linkage
C417S221000, C418S060000
Reexamination Certificate
active
10845193
ABSTRACT:
A variable capacity rotary compressor including upper and lower compression chambers having different capacities, and a rotating shaft. Upper and lower eccentric cams are provided on the rotating shaft to be eccentric from the rotating shaft in a same direction. Upper and lower eccentric bushes are fitted over the upper and lower eccentric cams, respectively, to be eccentric from the rotating shaft in opposite directions, with a slot provided at a predetermined position between the upper and lower eccentric bushes. A locking pin functions to change a position of the upper or lower eccentric bush to a maximum eccentric position. A restraining unit is set along an edge of the slot to prevent the upper or lower eccentric bush from slipping. The restraining unit includes first and second elastic pieces which are respectively provided at positions adjacent to first and second ends of the slot.
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Chinese Patent Office Action, mailed Nov. 28, 2006, and issued in corresponding Chinese Patent Application No. 200410047819X.
Cho Sung Hea
Lee Seung Kap
Sung Chun Mo
Koczo, Jr. Michael
Staas & Halsey , LLP
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