Throwing disc employing raised aerodynamic sections

• US 3,312,472 A
• Filed: 07/05/1963
• Issued: 04/04/1967
• Est. Priority Date: 07/05/1963
• Status: Expired due to Term

• Current Assignee: Robert A. Kerr
• Original Assignee: Robert A. Kerr
• Inventors: Kerr, Robert A.
• Application Number:
  US04/293,040
• Time in Patent Office: 1,369 Days
• US Class Current: 473/589
• CPC Class Codes: A63H 33/18 Throwing or slinging toys, e.g. flying disc toys discs used in athletics A63B65/10as part of a game A63F9/02; sling weapons F41B3/00; spring toy guns F41B7/08

Claims

1. 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.