US3200878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for controlling the working temperature in machines operating upon plastic materials
Assignee: Associated Electrical Industries Ltd
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Filing: 1961-10-04
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Granted: 1965-08-17
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Expires: 1981-10-04
Abstract
No abstract record available.
Inventors
- 👤 Ainley Alfred John
- 👤 Wright John Albert
- 👤 Heap Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:34
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/92; B29C2948/00; B29C2948/92; B29C2948/92009; B29C2948/92209; B29C2948/92323; B29C2948/92361; B29C2948/9238; B29C2948/924; B29C48/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
APPARATUS FOR CONTROLLING THE WORKING TEMPERATURE IN MACHINES FOR OPERATING UPON PLASTIC MATERIAL OF THE KING IN WHICH PLASTIC MATERIAL IS FORCED ALONG AN ELECTRICALLY HEATED CYLINDER, COMPRISING A CYLINDER, HELICAL TUBULAR COOLING COILS FOR CONVEYING A COOLING LIQUID, SAID COILS BEING WRAPPED IN HELICAL FORMATION AROUND AND DIRECTLY IN CONTACT WITH SAID CYLINDER AND EACH FED WITH A SUPPLY OF SAID COOLING LIQUID, A CYLINDRICAL SLEEVE DIRECTLY IN CONTACT WITH AND SURROUNGING THE COOLING COILS, AND
Claim 2
Dependent Claim
77 words
APPARATUS FOR CONTROLLING THE WORKING TEMPERATURE IN MACHINES FOR OPERATING UPON PLASTIC MATERIAL OF THE KING IN WHICH PLASTIC MATERIAL IS FORCED ALONG AN ELECTRICALLY HEATED CYLINDER, COMPRISING A CYLINDER, HELICAL TUBULAR COOLING COILS FOR CONVEYING A COOLING LIQUID, SAID COILS BEING WRAPPED IN HELICAL FORMATION AROUND AND DIRECTLY IN CONTACT WITH SAID CYLINDER AND EACH FED WITH A SUPPLY OF SAID COOLING LIQUID, A CYLINDRICAL SLEEVE DIRECTLY IN CONTACT WITH AND SURROUNGING THE COOLING COILS, AND
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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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |