Tip seal for scroll type compressor and manufacturing method the

Details Tip seal for scroll type compressor and manufacturing method the Tip seal for scroll type compressor and manufacturing method the

1995-10-26

1997-06-10

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

F04C 1804, F04C 2700

Patent

active

056369760

ABSTRACT:
One or two submarine gates 23 are located at portions of a mold corresponding to one or both ends of a tip seal to be molded. Synthetic resin is injected through the submarine gates 23. When the mold is opened after the synthetic resin is solidified, a molded product is cut off and separated by shearing from a runner 22 at a tip 23a of each of the submarine gates 23. Thus, no convex portion is formed as a gate trace on the end of the tip seal as a molded product when it is cut off. When the tip seal having no convex portion on the end thereof is inserted into the mounting groove of a scroll type compressor, the tip seal exhibits an excellent sealing property. With the aforesaid method, a tip seal excellent in a sealing property can be easily manufactured.

REFERENCES:
patent: 3994636 (1976-11-01), McCullough et al.
patent: 5364247 (1994-11-01), Fukanuma et al.

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