Scroll type fluid machine having counter weight provided on...

Details Scroll type fluid machine having counter weight provided on... Scroll type fluid machine having counter weight provided on...

2007-03-27

2008-11-25

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Weight balanced working member or partition

C418S055100, C418S055500, C418S057000

Reexamination Certificate

active

07455508

ABSTRACT:
A scroll type fluid machine having a driving system including a counter weight and a sub weight, in which an efficiency of an assembling operation is enhanced by simplifying an assembling structure of the driving system. In the fluid machine, a sub weight (17) is provided on a rotary shaft (16) and a counter weight (20) is provided on a driving bush (19) . The driving bush (19) is attached to the rotary shaft (16) by an attachment bolt (23) to prevent relative rotation between the rotary shaft and the driving bush. The rotary shaft (16) supported by a main bearing (18) and is driven in rotation by a motor (9), with the result that an orbiting scroll (4) performs an orbiting motion with respect to a fixed scroll (2).

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