US3312472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throwing disc employing raised aerodynamic sections
Assignee: Individual
•
Filing: 1963-07-05
•
Granted: 1967-04-04
•
Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 Robert A Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:07
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A DEVICE COMPRISING AN ANNULAR, SUBSTANTIALLY RIGID DISC WHICH IS ASYMMETRICAL WITH REFERENCE TO ITS HORIZONTAL AXIS AND WHICH HAS AN ELEVATED SECTION ON ITS TOP SURFACE AND AN ELEVATED SECTION ON ITS BOTTOM SURFACE, EACH OF SAID SECTIONS COMPRISING LESS THAN ONE-HALF OF THE TOTAL SURFACE AREA OF ITS CORRESPONDING SIDE AND SAID SECTIONS HAVING ANNULAR WALLS RELATIVE TO THE HORIZONTAL SURFACES OF THE DISC AND ONE OF SAID SECTIONS HAVING A MEANS DIAMETER SIGNIFICANTLY SMALLER THAN THE MEAN DIAMETER OF THE OTHER AND ONE OF SAID SECTIONS HAVING A THICKNESS SIGNIFICANTLY GREATER THAN THE THICKNESS OF THE OTHER OF SAID SECTIONS AND SAID DISC BEING SUBSTANTIALLY SOLID IN ITS CROSS SECTION AND THE ANGLE OF THE WALL OF SAID ELEVATED SECTION ON SAID TOP SURFACE BEING FROM ABOUT 100* TO ABOUT 165* TO THE HORIZONTAL TOP SURFACE OF THE DISC AND THE ANGLE OF THE WALL OF SAID ELEVATED SECTION OF SAID BOTTOM SURFACE BEING ABOUT 100* TO ABOUT 165* TO THE HORIZONTAL BOTTOM SURFACE OF SAID DISC.
Claim 2
Independent Claim
170 words
A DEVICE COMPRISING AN ANNULAR, SUBSTANTIALLY RIGID DISC WHICH IS ASYMMETRICAL WITH REFERENCE TO ITS HORIZONTAL AXIS AND WHICH HAS AN ELEVATED SECTION ON ITS TOP SURFACE AND AN ELEVATED SECTION ON ITS BOTTOM SURFACE, EACH OF SAID SECTIONS COMPRISING LESS THAN ONE-HALF OF THE TOTAL SURFACE AREA OF ITS CORRESPONDING SIDE AND SAID SECTIONS HAVING ANNULAR WALLS RELATIVE TO THE HORIZONTAL SURFACES OF THE DISC AND ONE OF SAID SECTIONS HAVING A MEANS DIAMETER SIGNIFICANTLY SMALLER THAN THE MEAN DIAMETER OF THE OTHER AND ONE OF SAID SECTIONS HAVING A THICKNESS SIGNIFICANTLY GREATER THAN THE THICKNESS OF THE OTHER OF SAID SECTIONS AND SAID DISC BEING SUBSTANTIALLY SOLID IN ITS CROSS SECTION AND THE ANGLE OF THE WALL OF SAID ELEVATED SECTION ON SAID TOP SURFACE BEING FROM ABOUT 100* TO ABOUT 165* TO THE HORIZONTAL TOP SURFACE OF THE DISC AND THE ANGLE OF THE WALL OF SAID ELEVATED SECTION OF SAID BOTTOM SURFACE BEING ABOUT 100* TO ABOUT 165* TO THE HORIZONTAL BOTTOM SURFACE OF SAID DISC.
References Cited (Backward Citations)
US158918A
Cited
US1513968A
Cited
US1986937A
Cited
US2126245A
Cited
US2690339A
Cited
US2744356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |