US3287486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding apparatus and method employing thermal expansion and contraction
Assignee: Uniroyal Inc
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Filing: 1963-04-15
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Granted: 1966-11-22
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Expires: 1983-04-15
Abstract
No abstract record available.
Inventors
- 👤 Herbert F Jurgeleit
- 👤 Max M Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:09
CPC Classifications
B; B30; B30B; B30B1/00; B30B1/005; B29; B29C; B29C33/00; B29C33/20; B29C33/22; B29C33/24; B29C43/00; B29C43/003; B29C45/00; B29C45/17; B29C45/64; B29D; B29D22/00; B29K; B29K2021/00; Y; Y10; Y10S; Y10S425/00; Y10S425/026
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
150 words
A PRESSING PROCESS COMPRISING THE STEPS OF (1) HEATING IN UNISON A FIRST PLURALITY OF THERMALLY RESPONSIVE STRAIN DEVICES CONNECTING A PAIR OF PRESSING ELEMENTS TO ELONGATE THE DEVICES, (2) TAKING UP THE GAPS FORMED BETWEEN A PRESSING ELEMENT AND THE HEAD PORTION OF THE DEVICES OF THE FIRST PLURALITY IN STEP (1), (3) COOLING IN UNISON THE DEVICES OF THE FIRST PLURALITY TO REDUCE THE ELONGATION AND PRESS THE PAIR OF PRESSING ELEMENTS TOWARDS EACH OTHER, (4) HEATING IN UNISON A SECOND PLURALITY OF THERMALLY RESPONSIVE STRAIN DEVICES CONNECTING THE PAIR OF PRESSING ELEMENTS TO ELONGATE THE DEVICES, (5) TAKING UP THE GAPS FORMED BETWEEM A PRESSING ELEMENT AND THE HEAD PORTIONS OF THE DEVICES OF THE SECOND PLURALITY IN STEPS (3) AND (4), (6) COOLING IN UNISON THE DEVICES OF THE SECOND PLURALITY TO REDUCE THE ELONGATION AND FURTHER PRESS THE PAIR OF PRESSING ELEMENTS TOWARDS EACH OTHER.
Claim 2
Dependent Claim
150 words
A PRESSING PROCESS COMPRISING THE STEPS OF (1) HEATING IN UNISON A FIRST PLURALITY OF THERMALLY RESPONSIVE STRAIN DEVICES CONNECTING A PAIR OF PRESSING ELEMENTS TO ELONGATE THE DEVICES, (2) TAKING UP THE GAPS FORMED BETWEEN A PRESSING ELEMENT AND THE HEAD PORTION OF THE DEVICES OF THE FIRST PLURALITY IN STEP (1), (3) COOLING IN UNISON THE DEVICES OF THE FIRST PLURALITY TO REDUCE THE ELONGATION AND PRESS THE PAIR OF PRESSING ELEMENTS TOWARDS EACH OTHER, (4) HEATING IN UNISON A SECOND PLURALITY OF THERMALLY RESPONSIVE STRAIN DEVICES CONNECTING THE PAIR OF PRESSING ELEMENTS TO ELONGATE THE DEVICES, (5) TAKING UP THE GAPS FORMED BETWEEM A PRESSING ELEMENT AND THE HEAD PORTIONS OF THE DEVICES OF THE SECOND PLURALITY IN STEPS (3) AND (4), (6) COOLING IN UNISON THE DEVICES OF THE SECOND PLURALITY TO REDUCE THE ELONGATION AND FURTHER PRESS THE PAIR OF PRESSING ELEMENTS TOWARDS EACH OTHER.
Claim 3
Dependent Claim
131 words
A PRESSING APPARATUS COMPRISING AT LEAST TWO PRESSING ELEMENTS ADAPTED TO EXERT CLOSING PRESSURE, A PLURALITY OF SETS OF ELONGATED THERMALLY RESPONSIVE STRAIN DEVICES, MEANS FOR EACH SET FOR HEATING THE DEVICES THEREOF IN UNISON, MEANS ADAPTED TO CONTROL THE HEATING MEANS TO HEAT THE DEVICES OF A SUCCESSIVE SET AFTER THE DEVICES OF A PRECEDING SET HAVE COMMENCED COOLING, AND MEANS TO TAKE UP THE GAPS CAUSED BETWEEN HEAD PORTIONS OF THE DEVICES OF A PARTICULAR SET AND A PRESSING ELEMENT BY THE THERMAL AXIAL ELONGATION OF THE DEVICES OF THAT PARTICULAR SET THE THERMAL AXIAL CONTRACTION OF THE DEVICES OF ANOTHER SET; WHEREBY THERE IS A CONTINUOUS EXERTION OF RESTRAINING PRESSURE BY COOL DEVICES TO PREVENT RETREAT OF THE PRESSING ELEMENTS FROM ONE ANOTHER DURING HEATING OF OTHER DEVICES.
Claim 4
Dependent Claim
131 words
A PRESSING APPARATUS COMPRISING AT LEAST TWO PRESSING ELEMENTS ADAPTED TO EXERT CLOSING PRESSURE, A PLURALITY OF SETS OF ELONGATED THERMALLY RESPONSIVE STRAIN DEVICES, MEANS FOR EACH SET FOR HEATING THE DEVICES THEREOF IN UNISON, MEANS ADAPTED TO CONTROL THE HEATING MEANS TO HEAT THE DEVICES OF A SUCCESSIVE SET AFTER THE DEVICES OF A PRECEDING SET HAVE COMMENCED COOLING, AND MEANS TO TAKE UP THE GAPS CAUSED BETWEEN HEAD PORTIONS OF THE DEVICES OF A PARTICULAR SET AND A PRESSING ELEMENT BY THE THERMAL AXIAL ELONGATION OF THE DEVICES OF THAT PARTICULAR SET THE THERMAL AXIAL CONTRACTION OF THE DEVICES OF ANOTHER SET; WHEREBY THERE IS A CONTINUOUS EXERTION OF RESTRAINING PRESSURE BY COOL DEVICES TO PREVENT RETREAT OF THE PRESSING ELEMENTS FROM ONE ANOTHER DURING HEATING OF OTHER DEVICES.
References Cited (Backward Citations)
US2585818A
Cited
US2990583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |