US3090994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic forming machine orifice structure
Assignee: OI Glass Inc
•
Filing: 1961-03-20
•
Granted: 1963-05-28
•
Expires: 1981-03-20
Abstract
No abstract record available.
Inventors
- 👤 Hans G Stenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:14
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/25; B29C48/255; B29C48/2556; B29C48/30; B29C48/32; B29C48/335; B29C48/34; B29C48/36; B29C48/375; B29C48/388; B29C2949/00; B29C2949/30; B29C2949/3032; B29C2949/3041; B29C48/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A PLASTIC FORMING MACHINE HAVING AN ORIFICE BLOCK IN WHICH A SUPPLY PASSAGE COMMUNICATES WITH A BLOCK BORE, MEANS ADAPTING THE BORE TO THE SIMULTANEOUS ISSUANCE THEREFROM OF A PLURALITY OF EXTRUDED TUBES COMPRISING A FIRST MANDREL POSITIONED IN THE BORE AND HAVING A PAIR OF OPEN-TOPPED RECESSES THEREIN, INDIVIDUAL SECONDARY MANDREL ELEMENTS SECURED IN SAID RECESSES TO DEFINE THEREWITH ANNULAR FLOW CHANNELS AND TO PROJECT BEYOND THE RECESSES, RESPECTIVELY, SEPARATE ORIFICE PLATES EACH COOPERATING WITH ONE OF THE PROJECTING SECONDARY MANDREL ELEMENTS TO DEFINE AN INDIVIDUAL EXTRUSION ORIFICE THEREWITH, AND INDIVIDUAL FLOW OPENINGS IN SAID FIRST MANDREL FOR SUPPLYING SEPARATE STEAMS OF PLASTIC MATERIAL FROM THE BLOCK SUPPLY PASSAGE TO THE MANDREL RECESSES AND HENCE TO THE INDIVIDUAL ORIFICES.
Claim 2
Dependent Claim
108 words
IN A METHOD OF SUPPLYING PLASTIC MATERIAL TO A PLURALITY OF EXTRUSION ORIFICES, THE STEP OF INITIALLY DIVIDING A SUPPLY STREAM OF MATERIAL INTO TWO SUBSTANTIALLY EQUAL STREAMS, FLOWING THE TWO STREAMS IN A DIRECTION AWAY FROM THE ORIFICES, MERGING THE STREAMS, REVERSING THE DIRECTION OF FLOW OF THE MERGED STREAM TO EFFECT FLOW TOWARD THE ORIFICES, AGAIN DIVIDING THE MERGED STREAM INTO A PLURALITY OF INDIVIDUAL STREAMS, REVERSING THE DIRECTION OF FLOW OF THE INDIVIDUAL STREAMS TO EFFECT FLOW THEREOF FROM THE ORIFICES, AGAIN REVERSING THE DIRECTION OF FLOW TO EFFECT FLOW OF THE STREAMS TOWARD THE ORIFICES, AND FINALLY ISSUING THE STREAMS FROM THE ORIFICES, RESPECTIVELY.
References Cited (Backward Citations)
US2688154A
Cited
US2780835A
Cited
US2871516A
Cited
US2978748A
Cited
US2977634A
Cited
US2961706A
Cited
US2960958A
Cited
GB862941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |