Patent US3201826A successfully refreshed from Google Patents.
US3201826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for stretching strips of plastic material
Assignee: Individual
•
Filing: 1962-12-03
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Granted: 1965-08-24
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Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Bruckner Gernot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:57
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/04; B29C55/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
AN APARATUS FOR STRETCHING PLASTIC SHEET MATERIAL IN THE LONGITUDINAL DIRECTION COMPRISING TWO STRETCHING ROLLS PARALLEL TO AND SPACED FROM EACH OTHER, THE SECOND ROLL BEING DRIVEN AT A HIGHER SPEED THAN THE FIRST ROLL SO AS TO EXERT A LONGITUDINAL TRACTION UPON THE SHEET MATERIAL RUNNING OVER SAID STRETCHING ROLLS , MEANS FOR HEATING SAID SHEET MATERIAL BETWEEN SAID STRETCHING ROLLS, A ROTATABLE SUPPORT, AND AT LEAST ONE PAIR OF PRESSURE ROLLS BETWEEN SAID STRETCHING ROLLS AND FOLLOWING SAID HEATING MEANS FOR PRESSING THE MARGINAL PARTS OF SAID SHEET MATERIAL AGAINST SAID ROTATABLE SUPPORT, SAID PRESSURE ROLLS BEING INCLINED RELATIVE TO EACH OTHER SO THAT THEIR AXES INTERSECT AT A CERTAIN DISTANCE FROM A STRAIGHT LINE CONNECTING THE CENTERS OF ROTATION OF SAID PRESSURE ROLLS IN THE DIRECTION OF MOVEMENT OF SAID SHEET MATERIAL.
Claim 2
Dependent Claim
135 words
AN APARATUS FOR STRETCHING PLASTIC SHEET MATERIAL IN THE LONGITUDINAL DIRECTION COMPRISING TWO STRETCHING ROLLS PARALLEL TO AND SPACED FROM EACH OTHER, THE SECOND ROLL BEING DRIVEN AT A HIGHER SPEED THAN THE FIRST ROLL SO AS TO EXERT A LONGITUDINAL TRACTION UPON THE SHEET MATERIAL RUNNING OVER SAID STRETCHING ROLLS , MEANS FOR HEATING SAID SHEET MATERIAL BETWEEN SAID STRETCHING ROLLS, A ROTATABLE SUPPORT, AND AT LEAST ONE PAIR OF PRESSURE ROLLS BETWEEN SAID STRETCHING ROLLS AND FOLLOWING SAID HEATING MEANS FOR PRESSING THE MARGINAL PARTS OF SAID SHEET MATERIAL AGAINST SAID ROTATABLE SUPPORT, SAID PRESSURE ROLLS BEING INCLINED RELATIVE TO EACH OTHER SO THAT THEIR AXES INTERSECT AT A CERTAIN DISTANCE FROM A STRAIGHT LINE CONNECTING THE CENTERS OF ROTATION OF SAID PRESSURE ROLLS IN THE DIRECTION OF MOVEMENT OF SAID SHEET MATERIAL.
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |