Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2005-09-13
2005-09-13
Wu, David W. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S492000, C524S571000, C524S574000
Reexamination Certificate
active
06943209
ABSTRACT:
The present invention provides a vibration-insulating rubber molded product having flash, where a thicker portion of the flash can be easily evaluated by visually observing a light-transmittance thereof to prevent the product from 5 cracking, and to find damage of a mold used for forming the product with ease.The vibration-insulating rubber molded product of the present invention comprises a rubber component, a silica powder and a carbon black. The content of the carbon black is determined such that (a) a portion having a thickness of 1 mm or less in the flash is substantially transparent or translucent with white or gray color, and that (b) a portion having a thickness of 2 mm or more in the flash is substantially opaque with black color, whereby whether the flash includes a portion having a thickness of 2 mm or more can be evaluated by visual observation.
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patent: 4769179 (1988-09-01), Kato et al.
patent: 5064905 (1991-11-01), Stamhuis et al.
patent: 5094829 (1992-03-01), Krivak et al.
patent: 5605950 (1997-02-01), Evans et al.
patent: A5239289 (1993-09-01), None
Birch & Stewart Kolasch & Birch, LLP
Honda Giken Kogyo Kabushiki Kaisha
Lee Rip A.
Wu David W.
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