Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1992-02-20
1993-07-06
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 57, F01C 104, F01C 2100
Patent
active
052248496
ABSTRACT:
A scroll fluid device includes meshing, involute scroll elements mounted for co-rotation in a support housing. One of the scroll elements is supported by a shaft extending through a bearing sleeve mounted so as to be pivotable about a pivot center located transversely of the center line of the shaft. Radial compliance movement of the shaft and bearing sleeve is also enabled about the pivot center. This enables the scroll element to pivot slightly about three independent axes to follow the movement of the opposed cooperating scroll element while at the same time providing radial compliance enabling the scroll flanks to open slightly in the event of an over pressurization between the scroll wraps. The pivot center is provided by a circular ball pivot element located between the bearing sleeve and adjacent fixed support structure.
REFERENCES:
patent: 4575318 (1986-03-01), Blain
patent: 4609334 (1986-09-01), Muir et al.
patent: 4730998 (1988-03-01), Kakuda et al.
patent: 4840549 (1989-06-01), Morishita et al.
Arthur D. Little Inc.
Vrablik John J.
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