Patent US4332634A successfully refreshed from Google Patents.
US4332634A
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US
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Method of preparing a resealable valve
Assignee: Medical Engineering Corp
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Filing: 1981-01-14
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Granted: 1982-06-01
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Expires: 2001-01-14
Abstract
Abstract A mehod of preparing a resealable valve which has a resealable inner core and an outer reinforced cover comprises first molding a hollow shell having a domed top and a bottom with a central opening, then turning the shell inside out and affixing a layer containing reinforcing fabric to the inside of the domed top, next turning the shell right side out and covering the bottom including the central opening with a layer containing reinforcing fabric to complete the cover, filling the thus formed cover with an uncured elastomer and finally curing the cover and its elastomer contents to form the resealable valve.
Inventors
- 👤 Steven M. Aperavich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:48
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/12; Y; Y10; Y10S; Y10S428/00; Y10S428/912; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1005; Y10T156/1028; Y10T156/103
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A method of preparing a resealable valve which has a resealable inner core and an outer reinforced cover which comprises first molding a hollow shell having a domed top and a bottom with a central opening, turning the shell inside out, affixing a layer containing reinforcing fabric to the inside of the domed top, turning the shell right side out and covering the bottom including the central opening with a layer containing reinforcing fabric to complete the cover, filling the thus formed cover with an uncured elastomer and then curing the cover and its elastomer contents to form a resealable valve having a resealable hard gel inner core and an outer reinforced protective cover.
Claim 2
Independent Claim
114 words
A method of preparing a resealable valve which has a resealable inner core and an outer reinforced cover which comprises first molding a hollow shell having a domed top and a bottom with a central opening, turning the shell inside out, affixing a layer containing reinforcing fabric to the inside of the domed top, turning the shell right side out and covering the bottom including the central opening with a layer containing reinforcing fabric to complete the cover, filling the thus formed cover with an uncured elastomer and then curing the cover and its elastomer contents to form a resealable valve having a resealable hard gel inner core and an outer reinforced protective cover.
Claim 3
Dependent Claim
13 words
The method of claim 1 in which the elastomer employed is silicone rubber.
Claim 4
Dependent Claim
12 words
The method of claim 1 in which the reinforcing fabric is dacron.
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) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |