Patent US3148410A successfully refreshed from Google Patents.
US3148410A
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Method and apparatus for stretching film
Assignee: John Dalglish and Sons Ltd
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Filing: 1962-12-06
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Granted: 1964-09-15
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Expires: 1982-12-06
Abstract
No abstract record available.
Inventors
- 👤 Laurie Kenneth Somerville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:50
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/10; B29C55/12; B29C55/16; B29C55/165; Y; Y10; Y10S; Y10S425/00; Y10S425/053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
APPARATUS FOR STRETCHING FILM COMPRISING AT LEAST ONE PAIR OF INTERSPACED OPPOSED DRAWING DEVICES ADAPTED TO ACT ON OPPOSITE EDGE PORTIONS OF THE FILM FED THERETO IN A STRETCHABLE AND TAUT STATE SO AS TO STRETCH THE FILM LONGITUDINALLY, EACH SAID DRAWING DEVICE COMPRISING FIRST AND SECOND LOWER WHEELS, AN ENDLESS DRIVE MEANS EXTENDING AROUND SAID FIRST AND SECOND LOWER WHEELS, AND AN UPPER WHEEL PRESSING DOWNWARDS ON THE DRIVE MEANS SO AS TO FORM A NIP FOR THE FILM EDGE PORITONS, SAID DRAWING DEVICES BEING MUTUALLY ANGLED DIVERGENTLY IN THE DIRECTION OF TRAVEL OF THE FILM SO THAT THE FILM IS STRETCHED LATERALLY SUBSTANTIALLY SIMULTANEOUSLY WITH THE LONGITUDINAL STRETCHING.
Claim 2
Dependent Claim
110 words
APPARATUS FOR STRETCHING FILM COMPRISING AT LEAST ONE PAIR OF INTERSPACED OPPOSED DRAWING DEVICES ADAPTED TO ACT ON OPPOSITE EDGE PORTIONS OF THE FILM FED THERETO IN A STRETCHABLE AND TAUT STATE SO AS TO STRETCH THE FILM LONGITUDINALLY, EACH SAID DRAWING DEVICE COMPRISING FIRST AND SECOND LOWER WHEELS, AN ENDLESS DRIVE MEANS EXTENDING AROUND SAID FIRST AND SECOND LOWER WHEELS, AND AN UPPER WHEEL PRESSING DOWNWARDS ON THE DRIVE MEANS SO AS TO FORM A NIP FOR THE FILM EDGE PORITONS, SAID DRAWING DEVICES BEING MUTUALLY ANGLED DIVERGENTLY IN THE DIRECTION OF TRAVEL OF THE FILM SO THAT THE FILM IS STRETCHED LATERALLY SUBSTANTIALLY SIMULTANEOUSLY WITH THE LONGITUDINAL STRETCHING.
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |