US4440820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic molding
Assignee: FIJITSU Ltd A CORP OF
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Filing: 1981-12-24
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Granted: 1984-04-03
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Expires: 2001-12-24
Abstract
Abstract A plastic molding, such as a key top with signs or letters appearing on its face has a first part molding having projections formed at its top defining an enclosed area. A second part molding of a color other than that of the first part molding is adhered to the surface of the first part molding in a manner permitting the ends of the projections to be exposed. The first part molding has a plurality of through holes formed in mesh configuration. At least one of the projections corresponds to at least one of the through holes. The second part molding is adhered to the first part molding to be buried in the plastic material of the second part molding. Part of the plastic material of the first part molding is filled into the enclosed area via the through holes. In a method of making such plastic molding, an inner member of the mold die may be used commonly regardless of the sign or letter provided in the plastic molding.
Inventors
- 👤 Masahiko Shiho
- 👤 Yasunori Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:43
CPC Classifications
B; B41; B41J; B41J5/00; B41J5/08; B41J5/12; B29; B29C; B29C45/00; B29C45/16; B29L; B29L2031/00; B29L2031/46; B29L2031/466; H; H01; H01H; H01H2229/00; H01H2229/044; H01H2229/046; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24174; Y10T428/24182; Y10T428/24273; Y10T428/24322; Y10T428/24331
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
209 words
A plastic molding comprising a first part molding of a determined color having a top and projections formed at said top and defining an enclosed area, said first part molding having a plurality of scattered through holes formed therein, each of said through holes being positioned in a matrix configuration to maintain a predetermined distance between adjacent through holes, at least one of said projections corresponding to at least one of said through holes, all or some of the corresponding through holes being formed within said enclosed area; and a second part molding of a color different from that of said first part molding adhered to the top of said first part molding including said enclosed area to permit exposure of the face at the end of said one of said projections, said second part molding being adhered to at least one part of said top and back of said first part molding to permit said first part molding to be buried in the plastic material of said second part molding, said plastic material on said top and back being joined together via said through holes, with part of said plastic material on said back being filled in said enclosed area via at least one of said through holes.
Claim 2
Dependent Claim
209 words
A plastic molding comprising a first part molding of a determined color having a top and projections formed at said top and defining an enclosed area, said first part molding having a plurality of scattered through holes formed therein, each of said through holes being positioned in a matrix configuration to maintain a predetermined distance between adjacent through holes, at least one of said projections corresponding to at least one of said through holes, all or some of the corresponding through holes being formed within said enclosed area; and a second part molding of a color different from that of said first part molding adhered to the top of said first part molding including said enclosed area to permit exposure of the face at the end of said one of said projections, said second part molding being adhered to at least one part of said top and back of said first part molding to permit said first part molding to be buried in the plastic material of said second part molding, said plastic material on said top and back being joined together via said through holes, with part of said plastic material on said back being filled in said enclosed area via at least one of said through holes.
Claim 3
Dependent Claim
51 words
A plastic molding as claimed in claim 1, wherein said plastic molding is a key top which functions to operate a press button switch and said one of said projections forms a sign within said enclosed area, said sign being a capital letter which is one of A, B and O.
References Cited (Backward Citations)
US2863241A
Cited
US3354249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |