Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1987-04-28
1989-04-25
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418178, 291564R, F01C 104, F01C 2108, B23P 1510
Patent
active
048243450
ABSTRACT:
A scroll type fluid displacement apparatus is disclosed in which a pair of scrolls interfit at an angular and radial offset, each scroll including a circular end plate and a spiral element. The outer wall surface of each spiral element, which extends from an outer terminal end of the spiral element to the point of contact with the outer terminal end of the opposed spiral element at the orbital position where the sealed off fluid pockets are initially formed, is a rough unfinished surface. Accordingly, the time for manufacturing each spiral element is reduced and waste of material which is produced when the scroll surfaces are finished by turning is decreased.
REFERENCES:
patent: 4303379 (1981-12-01), Hiraga et al.
patent: 4304535 (1981-12-01), Terauchi
patent: 4403494 (1983-09-01), McCullough
patent: 4433564 (1984-02-01), Fukushima et al.
patent: 4436465 (1984-03-01), Fukushima et al.
patent: 4487248 (1984-12-01), Fukushima et al.
patent: 4666380 (1987-05-01), Hirano et al.
Technical Memorandum-"Mass Production Manufacturing Techniques For Scroll Components", Jan, 1979.
Fukuhara Seiichi
Fukushima Eiji
Sanden Corporation
Vrablik John J.
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