US4110491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for encapsulating and coagulating elastomers
Assignee: EIDP Inc
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Filing: 1976-06-29
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Granted: 1978-08-29
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Expires: 1996-06-29
Abstract
Abstract Method and apparatus for encapsulating and coagulating an elastomeric latex wherein the latex is introduced as drops into an encapsulating-coagulating liquid via a draft tube through which the encapsulating-coagulating liquid is impelled downwardly in generally linear flow, and thereafter recycling the encapsulating-coagulating liquid into the top of the draft tube free of particulate elastomeric product.
Inventors
- 👤 Robert M. Secor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:06
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/14; C08C1/16; Y; Y10; Y10S; Y10S528/00; Y10S528/931; Y10S528/934; Y10S528/936; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
86 words
A method for encapsulating and coagulating elastomer latices comprising, in sequence, supplying said latices as multiple streams of separate drops by gravity fall through the surface of an encapsulating-coagulating liquid, followed by liquid-impelled generally linear transit of the particles through a vertically oriented flow-constrained zone to which encapsulating-coagulating liquid is supplied continuously at the top end and suspending the particles outside said flow-constrained zone while recycling said encapsulating-coagulating liquid from the lower end of said flow-constrained zone into said top end free of solid product particles.
Claim 2
Independent Claim
86 words
A method for encapsulating and coagulating elastomer latices comprising, in sequence, supplying said latices as multiple streams of separate drops by gravity fall through the surface of an encapsulating-coagulating liquid, followed by liquid-impelled generally linear transit of the particles through a vertically oriented flow-constrained zone to which encapsulating-coagulating liquid is supplied continuously at the top end and suspending the particles outside said flow-constrained zone while recycling said encapsulating-coagulating liquid from the lower end of said flow-constrained zone into said top end free of solid product particles.
Claim 3
Dependent Claim
42 words
A method for encapsulating and coagulating elastomeric latices according to claim 1 wherein said liquid is subjected to at least some turbulent flow in its transit from the discharge end of said flow-constrained zone to the top end of said flow-constrained zone.
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) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |