Method of manufacturing resin boot for constant-velocity universal joint
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United States of America Patent
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May 26, 2009
Grant Date -
Jun 23, 2005
app pub date -
Aug 18, 2004
filing date -
Dec 22, 2003
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Abstract
There is disclosed a manufacturing apparatus and method which are capable of smoothly removing a tripod boot integrated by secondary molding from a core without deforming the boot and which are superior in manufacturing efficiency and which are inexpensive, and a resin boot for a constant-velocity universal joint. The apparatus includes: divided molds which hold a primarily molded resin boot main body from the outside; a core which holds the boot main body from the inside; a runner mechanism which injects/charges a molten resin material into a secondary molding space formed between the core and an other-end annular fastening portion; and an ejection mechanism for removing the tripod boot in which portions having different thicknesses are integrally and secondarily molded on an inner periphery of the other-end annular fastening portion from the core. The ejection mechanism is provided with a plurality of ejectors in positions avoiding gates of the runner mechanism, and ejecting forces are applied onto lower end surface of the other-end annular fastening portion of the tripod boot from the ejectors to stably and smoothly remove the tripod boot from the core.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- FUKOKU CO., LTD.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Sueoka, Kazuhiko | Ageo, JP | 17 | 132 |
Takada, Yasuji | Ageo, JP | 13 | 55 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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