US4336009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding tool
Assignee: Woco Franz Josef Wolf and Co GmbH
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Filing: 1980-11-18
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Granted: 1982-06-22
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Expires: 2000-11-18
Abstract
Abstract A molding tool including an edge-sealing profile designed to bind the surface section of a molded article which is not to be coated, and which is integral with the surface of the molding tool that is under compression when the tool is closed.
Inventors
- 👤 Franz-Josef Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:34
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/14; B29C45/14336; B29C45/14418; B29C2045/14459; Y; Y10; Y10S; Y10S425/00; Y10S425/806
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
In a molding tool having oppositely facing first and second surfaces defining a mold cavity therebetween for the rubber injection coating of the outer rim of a circular disk, the improvement comprising: means for sharply defining a boundary transition between said coating on said outer rim of said disk and the remaining surfaces of said disk, said means including oppositely facing, triangular cross-sectioned projections extending merely a fraction of a millimeter from said first and second surfaces, and which projections engage said disk sufficiently close to said boundary transition during injection of said coating to result in no noticable impression in said disk except upon removal of said coating.
Claim 2
Dependent Claim
109 words
In a molding tool having oppositely facing first and second surfaces defining a mold cavity therebetween for the rubber injection coating of the outer rim of a circular disk, the improvement comprising: means for sharply defining a boundary transition between said coating on said outer rim of said disk and the remaining surfaces of said disk, said means including oppositely facing, triangular cross-sectioned projections extending merely a fraction of a millimeter from said first and second surfaces, and which projections engage said disk sufficiently close to said boundary transition during injection of said coating to result in no noticable impression in said disk except upon removal of said coating.
Claim 3
Dependent Claim
13 words
The molding tool of claim 1 wherein said projections have isosceles triangular cross-sections.
Claim 4
Dependent Claim
13 words
The molding tool of claim 1 wherein said projections have right-angle triangular cross-sections.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |