US3347289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for rip sawing of logs and timbers
Assignee: VYZKUMNY A VYVOJOVY USTAV DREVARDSKY
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Filing: 1966-10-12
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Granted: 1967-10-17
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Expires: 1986-10-12
Abstract
No abstract record available.
Inventors
- 👤 Kotesovec Vladimir
- 👤 Zizka Jan
- 👤 Janata Vlastimil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:47
CPC Classifications
B; B23; B23D; B23D45/00; B23D45/10; B23D45/105; B27; B27L; B27L11/00; B27L11/007; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0304; Y10T83/0311; Y10T83/647; Y10T83/6476; Y10T83/768; Y10T83/7872; Y10T83/929; Y10T83/9319; Y10T83/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
AN APPARATUS FOR RIP SAWING HEAVY ELONGATED WOODEN MEMBERS SUCH AS LOGS AND TIMBERS COMPRISING, IN COMBINATION: (A) A SUPPORT; (B) TWO SETS OF SAW BLADES MOUNTED ON SAID SUPPORT FOR ROTATION ABOUT TWO RESPECTIVE SPACED AXES EXTENDING IN A COMMON DIRECTION, (1) EACH SAW BLADE HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED CHIP FORMING TEETH, AND A ROUNDED GULLET BETWEEN EACH PAIR OF CIRCUMFERENTIALLY ADJACENT TEETH, (2) EACH CHIP FORMING TOOTH HAVING A CUTTING EDGE, A FACE ANGLE OF AT LEAST 40*, AND A CONCAVE FACE STARTING FROM SAID CUTTING EDGE AND LEADING INTO AN ASSOCIATED GULLET IN SAID BLADE, (3) THE WALLS OF THE GULLET DEFINING AN ENCLOSED CIRCLE IN A PLANE RADIAL RELATIVE TO THE AXIS OF THE BLADE, THE CIRCLE HAVING A RADIUS BETWEEN 1/5 AND 1/4 OF THE PERIPHERAL DIAMETER OF SAID BLADE;
Claim 2
Independent Claim
137 words
AN APPARATUS FOR RIP SAWING HEAVY ELONGATED WOODEN MEMBERS SUCH AS LOGS AND TIMBERS COMPRISING, IN COMBINATION: (A) A SUPPORT; (B) TWO SETS OF SAW BLADES MOUNTED ON SAID SUPPORT FOR ROTATION ABOUT TWO RESPECTIVE SPACED AXES EXTENDING IN A COMMON DIRECTION, (1) EACH SAW BLADE HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED CHIP FORMING TEETH, AND A ROUNDED GULLET BETWEEN EACH PAIR OF CIRCUMFERENTIALLY ADJACENT TEETH, (2) EACH CHIP FORMING TOOTH HAVING A CUTTING EDGE, A FACE ANGLE OF AT LEAST 40*, AND A CONCAVE FACE STARTING FROM SAID CUTTING EDGE AND LEADING INTO AN ASSOCIATED GULLET IN SAID BLADE, (3) THE WALLS OF THE GULLET DEFINING AN ENCLOSED CIRCLE IN A PLANE RADIAL RELATIVE TO THE AXIS OF THE BLADE, THE CIRCLE HAVING A RADIUS BETWEEN 1/5 AND 1/4 OF THE PERIPHERAL DIAMETER OF SAID BLADE;
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |