US4755334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the continuous production of articles or coatings with contours of complicated shape
Assignee: Bayer AG
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Filing: 1985-06-05
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Granted: 1988-07-05
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Expires: 2005-06-05
Abstract
Abstract The present invention is directed to a process for the continuous production of articles or coatings with contours wherein a liquid material is introduced at one end into the mold cavity formed between at least two travelling continous shaping faces, said material being cured in the mold cavity and subsequently removed from the mold, characterized in that (i) the travelling faces are moved downwards at least in the region of the material feed, (ii) the stream of material supplied is moved to and fro transversely to the direction of advance of the faces, and (iii) the quantity of material supplied is controlled so as to fill the mold cavity with a uniform coating and an apparatus for use therein.
Inventors
- 👤 Wolfgang Grimm
- 👤 James M. Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:33
CPC Classifications
B; B29; B29C; B29C39/00; B29C39/14; B29C39/20; B29C39/148; B29C39/22; B29C39/24; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/54; B29K; B29K2105/00; B29K2105/0002; B29K2105/06; B29K2105/08; B29K2105/10; B29K2105/101; B29L; B29L2031/00; B29L2031/32; B29L2031/324; B29L2031/709; B29L2031/7092; Y; Y10; Y10S; Y10S264/00; Y10S264/74
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
179 words
A process for the continuous production of articles or coatings with contours wherein a liquid material is introduced at one end into the mold cavity formed between at least two travelling continuous shaping faces, said material being cured in the mold cavity and subsequently removed from the mold, characterized in that (i) the travelling faces are moved downwards at least in the region of the liquid material feed, (ii) the stream of liquid material supplied is moved to and fro transversely to the direction of advance of the faces, and (iii) the quantity of liquid material is supplied through an open inlet of the mold cavity and is controlled so as to fill the mold cavity with a coating having a non-uniform thickness said control being effected by varying the rate of advance of the travelling faces or by varying the oscillation rate of the stream while the quantity of liquid material supplied to the mold remains constant or by varying the quantity of liquid material supplied to the mold while the oscillation rate of the stream remains constant.
Claim 2
Dependent Claim
179 words
A process for the continuous production of articles or coatings with contours wherein a liquid material is introduced at one end into the mold cavity formed between at least two travelling continuous shaping faces, said material being cured in the mold cavity and subsequently removed from the mold, characterized in that (i) the travelling faces are moved downwards at least in the region of the liquid material feed, (ii) the stream of liquid material supplied is moved to and fro transversely to the direction of advance of the faces, and (iii) the quantity of liquid material is supplied through an open inlet of the mold cavity and is controlled so as to fill the mold cavity with a coating having a non-uniform thickness said control being effected by varying the rate of advance of the travelling faces or by varying the oscillation rate of the stream while the quantity of liquid material supplied to the mold remains constant or by varying the quantity of liquid material supplied to the mold while the oscillation rate of the stream remains constant.
Claim 3
Dependent Claim
21 words
The process of claim 1, characterized in that control is effected by varying the rate of advance of the travelling faces.
Claim 4
Dependent Claim
31 words
The process of claim 1, characterized in that control is effected by varying the oscillation rate of the stream while the quantity of liquid material supplied to the mold remains constant.
Claim 5
Dependent Claim
30 words
The process of claim 1, characterized in that control is effected by varying the quantity of liquid material supplied to the mold while oscillation rate of the stream remains constant.
Claim 6
Dependent Claim
18 words
The process of claim 1, characterized in that polyurethane elastomer forming materials are used as the liquid material.
References Cited (Backward Citations)
US3226457A
Cited
US3267191A
Cited
US3660548A
Cited
GB1101786A
Cited
US3487143A
Cited
US4309375A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |