US5989664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic product and manufacturing method therefor
Assignee: Ebara Corp
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Filing: 1996-08-09
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Granted: 1999-11-23
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Expires: 2016-08-09
Abstract
Abstract A plastic product comprising an inner core portion made of plastic and having a solid shape or a hollow shape including an internal cavity, and a fiber-reinforced plastic layer formed on inner and/or outer surfaces of the inner core portion, whereby the plastic product has light weight, high strength and excellent vibration suppressing and noise shielding ability.
Inventors
- 👤 Hirokazu Takayama
- 👤 Toshiyuki Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:11
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/34; B29C70/342; B29C64/00; B29C64/10; B29C64/106; B29C64/124; B29C70/06; B29C70/08; B29C70/086; B29C70/088; B29L; B29L2031/00; B29L2031/748; B29L2031/7496; B29L2031/7498; B33; B33Y; B33Y80/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49249; Y10T29/49256; Y10T29/49259; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1362; Y10T428/139; Y10T428/1393; Y10T428/24; Y10T428/24744
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
67 words
A plastic product comprising: an inner core made of a plastic material suitable for a photo-forming technique and formed by the photo-forming technique, said inner core having a monolithic structure and a three dimensional solid or hollow shape including at least one projection projecting from a surface of the inner core; and a fiber-reinforced plastic layer formed on a substantially entirety of the surface of said core.
Claim 2
Dependent Claim
67 words
A plastic product comprising: an inner core made of a plastic material suitable for a photo-forming technique and formed by the photo-forming technique, said inner core having a monolithic structure and a three dimensional solid or hollow shape including at least one projection projecting from a surface of the inner core; and a fiber-reinforced plastic layer formed on a substantially entirety of the surface of said core.
Claim 3
Dependent Claim
18 words
A plastic product according to claim 1, wherein said fiber-reinforced plastic layer is formed from a fiber-reinforced prepreg.
Claim 4
Dependent Claim
41 words
A plastic product according to claim 2, wherein said fiber-reinforced prepreg is a carbon fiber mat impregnated with an epoxy resin, or a glass fiber mat impregnated with a thermosetting resin and maintained in a gel form in an intermediate product.
Claim 5
Dependent Claim
23 words
A plastic product according to claim 3, wherein said plastic product is a component of a high speed and high pressure rotary machine.
Claim 6
Dependent Claim
23 words
A plastic product according to claim 2, wherein said fiber-reinforced plastic layer has an elastic modules higher than that of said inner core.
Claim 7
Dependent Claim
23 words
A plastic product according to claim 2, wherein said plastic product is a component of a high speed and high pressure rotary machine.
Claim 8
Dependent Claim
23 words
A plastic product according to claim 1, wherein said fiber-reinforced plastic layer has an elastic modules higher than that of said inner core.
Claim 9
Dependent Claim
23 words
A plastic product according to claim 7, wherein said plastic product is a component of a high speed and high pressure rotary machine.
Claim 10
Dependent Claim
23 words
A plastic product according to claim 1, wherein said plastic product is a component of a high speed and high pressure rotary machine.
Claim 11
Dependent Claim
17 words
A plastic product according to claim 9, wherein said component is a pump casing or an impeller.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-22 | 2003-05-24 | 2003-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-22 | 2007-05-24 | 2007-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-22 | 2011-05-24 | 2011-11-23 | $7700.00 | Window Closed / Lapsed |