Metal working – Method of mechanical manufacture – Heat exchanger or boiler making
Reexamination Certificate
2011-03-01
2011-03-01
Bryant, David P (Department: 3726)
Metal working
Method of mechanical manufacture
Heat exchanger or boiler making
C029S898000, C029S898050, C029S898055, C029S527100, C029S527500, C029S527600, C029S530000, C264S299000
Reexamination Certificate
active
07895748
ABSTRACT:
Disclosed is a method of molding a resin coated bearing. When a molten resin is injected toward a substantially central portion of a disk space of forming dies from a sprue formed on an upper die, the molten resin is filled into a cavity through a film gate after the molten resin is led to the disk space from a pin gate, so that any weld is absent on a resin member, which covers an outer race, thus enabling uniformizing a coating member in resin strength and suppressing generation of crack on the coating member even at the time of high loading. Also, since the film gate formed on a whole peripheral edge of the disk space is formed from a lower die and an upper die, there is an advantage that after working suffices to take out a resin coated bearing from the both dies and to cut a runner in the disk space.
REFERENCES:
patent: 5728343 (1998-03-01), Ueno
patent: 08-142112 (1996-06-01), None
patent: 2003-176661 (2003-06-01), None
Machine Translation of JP2003-176661, 2003.
Ishihara Hiroshi
Ito Yoshichika
Matsumoto Shuichi
Naito Hiroshi
Nomura Takumi
Browdy and Neimark PLLC
Bryant David P
Daido Metal Company Ltd.
Sunhill Inc.
Walters Ryan J
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