Patent US3304970A successfully refreshed from Google Patents.
US3304970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial feed waferizer
Assignee: Domtar Inc
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Filing: 1964-03-03
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Granted: 1967-02-21
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Expires: 1984-03-03
Abstract
No abstract record available.
Inventors
- 👤 Altosaar Heino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:42
CPC Classifications
B; B27; B27L; B27L11/00; B27L11/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
A WAFERER FOR REDUCING RANDOM LENGTH LOGS TO WAFERS INCLUDING: A WAFERING HEAD, A SURFACE ON SAID HEAD, A PLURALITY OF DISCRETE CUTTING EDGES ARRANGED IN A SPIRAL PATH ABOUT SAID SURFACE, EACH OF SAID CUTTING EDGES COMPRISING A MAIN CUTTING EDGE AND AN AUXILIARY CUTTINGS EDGE, A V-SHAPED CROSS SECTION PROJECTION EXTENDING FROM SAID SURFACE BETWEEN EACH CONSECUTIVE KNIFE IN SAID PATH, ONE SURFACE OF SAID V-SHAPED PROJECTION BEING SUBSTANTIALLY PARALLEL AND TRAILING EACH SAID MAIN CUTTING EDGE, THE OTHER SURFACE OF EACH SAID V-SHAPED PROJECTION BEING SUBSTANTIALLY PARALLEL TO AND TRAILING EACH SAID AUXILIARY CUTTING EDGE, THE LENGTH OF SAID ONE SURFACE IN AN AXIAL PLANE BEING EQUAL TO THE EFFECTIVE LENGTH OF SAID MAIN CUTTING EDGE AND THE AVERAGE LENGTH OF SAID OTHER SURFACE BEING EQUAL TO THE NUMBER OF CUTTING EDGES PER 360 DEGREES OF SAID SPIRAL PATH MULTIPLIED BY THE EFFECTIVE LENGTH OF THE AUXILIARY CUTTING EDGE, SAID MAIN CUTTING EDGE OF EACH CONSECUTIVE KNIFE BEING STEPPED FROM THE TRAILING END OF EACH SAID ONE SURFACE, SAID ONE SURFACE BEING POSITIONED TO ENGAGE AND STEADY A LOG FED TO SAID HEAD AND SAID OTHER SURFACE BEING POSITIONED TO ENGAGE AND PREVENT OVERFEEDING OF SAID LOG.
Claim 2
Dependent Claim
200 words
A WAFERER FOR REDUCING RANDOM LENGTH LOGS TO WAFERS INCLUDING: A WAFERING HEAD, A SURFACE ON SAID HEAD, A PLURALITY OF DISCRETE CUTTING EDGES ARRANGED IN A SPIRAL PATH ABOUT SAID SURFACE, EACH OF SAID CUTTING EDGES COMPRISING A MAIN CUTTING EDGE AND AN AUXILIARY CUTTINGS EDGE, A V-SHAPED CROSS SECTION PROJECTION EXTENDING FROM SAID SURFACE BETWEEN EACH CONSECUTIVE KNIFE IN SAID PATH, ONE SURFACE OF SAID V-SHAPED PROJECTION BEING SUBSTANTIALLY PARALLEL AND TRAILING EACH SAID MAIN CUTTING EDGE, THE OTHER SURFACE OF EACH SAID V-SHAPED PROJECTION BEING SUBSTANTIALLY PARALLEL TO AND TRAILING EACH SAID AUXILIARY CUTTING EDGE, THE LENGTH OF SAID ONE SURFACE IN AN AXIAL PLANE BEING EQUAL TO THE EFFECTIVE LENGTH OF SAID MAIN CUTTING EDGE AND THE AVERAGE LENGTH OF SAID OTHER SURFACE BEING EQUAL TO THE NUMBER OF CUTTING EDGES PER 360 DEGREES OF SAID SPIRAL PATH MULTIPLIED BY THE EFFECTIVE LENGTH OF THE AUXILIARY CUTTING EDGE, SAID MAIN CUTTING EDGE OF EACH CONSECUTIVE KNIFE BEING STEPPED FROM THE TRAILING END OF EACH SAID ONE SURFACE, SAID ONE SURFACE BEING POSITIONED TO ENGAGE AND STEADY A LOG FED TO SAID HEAD AND SAID OTHER SURFACE BEING POSITIONED TO ENGAGE AND PREVENT OVERFEEDING OF SAID LOG.
References Cited (Backward Citations)
US3216470A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |