US3371384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection valve pressure regulator
Assignee: Lenslite Co Inc
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Filing: 1965-05-06
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Granted: 1968-03-05
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Expires: 1985-05-06
Abstract
No abstract record available.
Inventors
- 👤 Nouel Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:43
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/20; B29C45/23; Y; Y10; Y10S; Y10S425/00; Y10S425/224; Y10S425/225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
AN INJECTION VALVE PRESSURE REGULATOR COMPRISING A NOZZLE HAVING A CHAMBER AND ADAPTED TO INTRODUCE PLASTIC MATERIAL INTO A MOLD CAVITY, A PAIR OF PASSASGES LEADING INTO AND OUT OF SAID CHAMBER, VALVE MEANS IN SAID CHAMBER INCLUDING OPPOSED SEATS AT SAID PASSAGES AND A VALVE MEMBER MOVABLE TO ENGAGE SAID SEATS AND CLOSE SAID PASSAGES, SAID VALVE MEMBER HAIVNG SECTIONS OF DIFFERENT DIAMETER SUBJECT TO PRESSURE OF PLASTIC MATERIAL BEING INJECTED AND RESPONSIVE TO THE BACK PRESSURE RESULTING FROM A FILLED CONDITION OF A MOLD CAVITY TO URGE THE VALVE MEMBER AGAINST ONE OF SAID SEATS TO INTERRUPT THE FLOW OF PLASTIC MATERIAL TO SAID CHAMBER, A FLUID PRESSURE DEVICE CONNECTED TO SAID VALVE MEMBER, SAID FLUID PRESSURE DEVICE COMPRISING A PAIR OF PISTONS EACH SLIDABLE IN A CYCLINDER, MEANS FOR APPLYING PRESSURE FLUID TO ONE CYLINDER TO PROVIDE A FORCE FOR URGING SAID VALVE MEMBER TO A POSITION INTERMEDIATE SAID VALVE SEATS, AND MEANS FOR APPLYING PRESSURE FLUID TO THE SECOND CYLINDER TO MOVE SAID VALVE MEMBER AGAINST SAID OTHER VALVE SEAT TO CLOSE THE NOZZLE CONNECTION WITH THE MOLD.
Claim 2
Dependent Claim
182 words
AN INJECTION VALVE PRESSURE REGULATOR COMPRISING A NOZZLE HAVING A CHAMBER AND ADAPTED TO INTRODUCE PLASTIC MATERIAL INTO A MOLD CAVITY, A PAIR OF PASSASGES LEADING INTO AND OUT OF SAID CHAMBER, VALVE MEANS IN SAID CHAMBER INCLUDING OPPOSED SEATS AT SAID PASSAGES AND A VALVE MEMBER MOVABLE TO ENGAGE SAID SEATS AND CLOSE SAID PASSAGES, SAID VALVE MEMBER HAIVNG SECTIONS OF DIFFERENT DIAMETER SUBJECT TO PRESSURE OF PLASTIC MATERIAL BEING INJECTED AND RESPONSIVE TO THE BACK PRESSURE RESULTING FROM A FILLED CONDITION OF A MOLD CAVITY TO URGE THE VALVE MEMBER AGAINST ONE OF SAID SEATS TO INTERRUPT THE FLOW OF PLASTIC MATERIAL TO SAID CHAMBER, A FLUID PRESSURE DEVICE CONNECTED TO SAID VALVE MEMBER, SAID FLUID PRESSURE DEVICE COMPRISING A PAIR OF PISTONS EACH SLIDABLE IN A CYCLINDER, MEANS FOR APPLYING PRESSURE FLUID TO ONE CYLINDER TO PROVIDE A FORCE FOR URGING SAID VALVE MEMBER TO A POSITION INTERMEDIATE SAID VALVE SEATS, AND MEANS FOR APPLYING PRESSURE FLUID TO THE SECOND CYLINDER TO MOVE SAID VALVE MEMBER AGAINST SAID OTHER VALVE SEAT TO CLOSE THE NOZZLE CONNECTION WITH THE MOLD.
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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |