US3099442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for feeding sheet material
Assignee: Primerica Inc
•
Filing: 1961-04-11
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Granted: 1963-07-30
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Expires: 1981-04-11
Abstract
No abstract record available.
Inventors
- 👤 Wendricks Roland Norbert
- 👤 Weygant Robert Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:49
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/46; B65H3/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A METHOD OF SINGLY FEEDING THE LOWERMOST SHEET FROM A STACKED QUANTITY OF THIN FLEXIBLE SHEETS COMPRISING THE STEPS OF, PLACING SAID STACKED SHEETS ON A SUPPORT SURFACE, SAID SUPPORT SURFACE FORMING TRANSVERSELY DIVERGENT PASSAGES WITH THE LONGITUDINAL EDGE PORTIONS OF SAID LOWERMOST SHEET, INTRODUCING PRESSURIZED AIR BETWEEN SAID SUPPORT SURFACE AND SAID LOWERMOST SHEET, SAID AIR FLOWING AT A HIGH VELOCITY TOWARDS THE LONGITUDINAL EDGES OF SAID SHEET THEREBY CREATING A PRESSURE DIFFERENTIAL ON THE LONGITUDINAL EDGE PORTIONS OF THE LOWERMOST SHEET AND CAUSING SAID EDGE PORTIONS TO BE BENT AND DEPRESSED TOWARDS SAID SUPPORT SURFACE WHILE SIMULTANEOUSLY BEING SPACED THEREFROM DUE TO THE AIR FLOWING THEREBETWEEN, ENGAGING SAID LOWERMOST SHEET AT THE DEPRESSED PORTIONS THEREOF, AND ADVANCING SAID LOWERMOST SHEET FROM BENEATH SAID STACKED QUANTITY OF SHEETS.
Claim 2
Independent Claim
129 words
A METHOD OF SINGLY FEEDING THE LOWERMOST SHEET FROM A STACKED QUANTITY OF THIN FLEXIBLE SHEETS COMPRISING THE STEPS OF, PLACING SAID STACKED SHEETS ON A SUPPORT SURFACE, SAID SUPPORT SURFACE FORMING TRANSVERSELY DIVERGENT PASSAGES WITH THE LONGITUDINAL EDGE PORTIONS OF SAID LOWERMOST SHEET, INTRODUCING PRESSURIZED AIR BETWEEN SAID SUPPORT SURFACE AND SAID LOWERMOST SHEET, SAID AIR FLOWING AT A HIGH VELOCITY TOWARDS THE LONGITUDINAL EDGES OF SAID SHEET THEREBY CREATING A PRESSURE DIFFERENTIAL ON THE LONGITUDINAL EDGE PORTIONS OF THE LOWERMOST SHEET AND CAUSING SAID EDGE PORTIONS TO BE BENT AND DEPRESSED TOWARDS SAID SUPPORT SURFACE WHILE SIMULTANEOUSLY BEING SPACED THEREFROM DUE TO THE AIR FLOWING THEREBETWEEN, ENGAGING SAID LOWERMOST SHEET AT THE DEPRESSED PORTIONS THEREOF, AND ADVANCING SAID LOWERMOST SHEET FROM BENEATH SAID STACKED QUANTITY OF SHEETS.
References Cited (Backward Citations)
US2806696A
Cited
US2953371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |