Patent US3243920A successfully refreshed from Google Patents.
US3243920A
Expired / Lapsed
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Cutting apparatus
Assignee: Individual
•
Filing: 1963-09-27
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Granted: 1966-04-05
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Expires: 1983-09-27
Abstract
No abstract record available.
Inventors
- 👤 Jr William B Hannum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:50
CPC Classifications
B; B24; B24C; B24C5/00; B24C1/00; B24C1/04; B24C1/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
CUTTING APPARATUS, COMPRISING IN COMBINATION, AN ENDLESS, FLEXIBLE, RESILIENT, HOLLOW CONVEYOR HAVING A BASE AND SIDEWALLS CONVERGING TOGETHER FROM THE BASE AND HELD CLOSED AGAINST ONE ANOTHER OPPOSITE THE BASE BY THE RESILIENCE OF THE CONVEYOR MATERIAL AND URGED APART BY PRESSURE AGAINST THE BASE IN THE REGION OPPOSITE THE CONVERGENCE OF THE SIDEWALLS, SPACED PULLEYS FOR SUPPORTING THE BASE OF THE CONVEYOR AND APPLYING PRESSURE TO THE BASE IN SAID REGION TO OPEN THE SIDEWALLS OF THE CONVEYOR OVER A LIMITED DISTANCE SO THAT ABRASIVE MATERIAL MAY BE INTRODUCED AT ONE PULLEY AND EJECTED AT THE OTHER, MEANS FOR INTRODUCING ABRASIVE MATERIAL INTO THE HOLLOW INTERIOR OF THE CONVEYOR WHEN ITS SIDEWALLS ARE OPENED AT ONE PULLEY, AND MOTOR MEANS FOR DRIVING SAID CONVEYOR AT SUFFICIENT SPEED TO PRODUCE ABRASION OR CUTTING OF A SURFACE IN PROXIMITY TO THE OTHER PULLEY AS THE ABRASIVE MATERIAL IS EJECTED BY CENTRIFUGAL FORCE AS THE CONVEYOR IS OPENED BY SAID OTHER PULLEY.
Claim 2
Dependent Claim
160 words
CUTTING APPARATUS, COMPRISING IN COMBINATION, AN ENDLESS, FLEXIBLE, RESILIENT, HOLLOW CONVEYOR HAVING A BASE AND SIDEWALLS CONVERGING TOGETHER FROM THE BASE AND HELD CLOSED AGAINST ONE ANOTHER OPPOSITE THE BASE BY THE RESILIENCE OF THE CONVEYOR MATERIAL AND URGED APART BY PRESSURE AGAINST THE BASE IN THE REGION OPPOSITE THE CONVERGENCE OF THE SIDEWALLS, SPACED PULLEYS FOR SUPPORTING THE BASE OF THE CONVEYOR AND APPLYING PRESSURE TO THE BASE IN SAID REGION TO OPEN THE SIDEWALLS OF THE CONVEYOR OVER A LIMITED DISTANCE SO THAT ABRASIVE MATERIAL MAY BE INTRODUCED AT ONE PULLEY AND EJECTED AT THE OTHER, MEANS FOR INTRODUCING ABRASIVE MATERIAL INTO THE HOLLOW INTERIOR OF THE CONVEYOR WHEN ITS SIDEWALLS ARE OPENED AT ONE PULLEY, AND MOTOR MEANS FOR DRIVING SAID CONVEYOR AT SUFFICIENT SPEED TO PRODUCE ABRASION OR CUTTING OF A SURFACE IN PROXIMITY TO THE OTHER PULLEY AS THE ABRASIVE MATERIAL IS EJECTED BY CENTRIFUGAL FORCE AS THE CONVEYOR IS OPENED BY SAID OTHER PULLEY.
References Cited (Backward Citations)
US2176497A
Cited
US3098324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |