Patent US3344477A successfully refreshed from Google Patents.
US3344477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for molding of plastic under pressure
Assignee: Individual
•
Filing: 1964-10-05
•
Granted: 1967-10-03
•
Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Stokis Edmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:49
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/27; B29C45/28; B29C45/2803; Y; Y10; Y10S; Y10S425/00; Y10S425/812; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A NON-RETURN VALVE FOR PLASTIC INJECTION MOLDING, COMPRISING A VALVE BODY HAVING A BORE THERETHROUGH WITH A TAPERED ENLARGEMENT AT ONE END, A NON-RETURN VALVE MEMBER RECIPROCABLE IN THE BORE AND HAVING A HEAD HAVING A SHARP EDGE THAT ENGAGES SAID TAPERED ENLARGEMENT OF LONGITUDINALLY EXTENDING RIBS THEREON WHICH ENGAGE WITH MINMUM CLEARANCE THE BORE OF THE VALVE BODY AND WHICH DEFINE BETWEEN THEM LONGITUDINALLY EXTENDING PASSAGES THAT COMMUNICATE WITH THE UNDERSIDE OF SAID HEAD SAID RIBS BEING ENLARGED RADIALLY OUTWARDLY AT THEIR ENDS OPPOSITE SAID HEAD SO AS TO RETAIN SAID BODY IN SAID BORE BETWEEN SAID HEAD AND SAID ENLARGED RIB ENDS, SAID HEAD AND SAID ENLARGED ENDS BEING SPACED APART FROM EACH OTHER A DISTANCE SUFFICIENT TO PERMIT SUBSTANTIAL RECIPROCAL MOVEMENT OF SAID VALVE MEMBER IN SAID BORE.
Claim 2
Dependent Claim
131 words
A NON-RETURN VALVE FOR PLASTIC INJECTION MOLDING, COMPRISING A VALVE BODY HAVING A BORE THERETHROUGH WITH A TAPERED ENLARGEMENT AT ONE END, A NON-RETURN VALVE MEMBER RECIPROCABLE IN THE BORE AND HAVING A HEAD HAVING A SHARP EDGE THAT ENGAGES SAID TAPERED ENLARGEMENT OF LONGITUDINALLY EXTENDING RIBS THEREON WHICH ENGAGE WITH MINMUM CLEARANCE THE BORE OF THE VALVE BODY AND WHICH DEFINE BETWEEN THEM LONGITUDINALLY EXTENDING PASSAGES THAT COMMUNICATE WITH THE UNDERSIDE OF SAID HEAD SAID RIBS BEING ENLARGED RADIALLY OUTWARDLY AT THEIR ENDS OPPOSITE SAID HEAD SO AS TO RETAIN SAID BODY IN SAID BORE BETWEEN SAID HEAD AND SAID ENLARGED RIB ENDS, SAID HEAD AND SAID ENLARGED ENDS BEING SPACED APART FROM EACH OTHER A DISTANCE SUFFICIENT TO PERMIT SUBSTANTIAL RECIPROCAL MOVEMENT OF SAID VALVE MEMBER IN SAID BORE.
References Cited (Backward Citations)
US2396406A
Cited
US2629897A
Cited
US2770011A
Cited
US2892214A
Cited
GB922788A
Cited
US3151374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |