Title:
FLYING RING
Document Type and Number:
WIPO Patent Application WO/2018/030282
Kind Code:
A1
Abstract:
Provided is a flying ring 10, which has a ring-shaped structure and is rotationally symmetric from an inner edge 21 to an outer edge 20. Said ring-shaped structure comprises an approximately horizontal bottom surface 41, and an arc-shaped lower surface inclined wall 50, which radially expands downwards from the inner edge 21 and connects with the bottom surface 41. With regard to the radial direction from the inner edge 21 to the outer edge 20, a ratio of the outer diameter to the inner diameter of the ring-shaped structure is less than 1.92. An angle Kc with regard to the lower surface inclined wall 50 is greater than 0° and 45° or less. A height Sh is less than or equal to a width Kw of the lower surface inclined wall 50 in the radial direction.
Inventors:
SHIBASAKI TAKENOBU (JP)
Application Number:
PCT/JP2017/028342
Publication Date:
February 15, 2018
Filing Date:
August 04, 2017
Export Citation:
Assignee:
SHIBASAKI TAKENOBU (JP)
International Classes:
A63B65/10; A63B67/06; A63H27/00
Foreign References:
| US4820230A | 1989-04-11 | |||
| JPS5024310Y1 | 1975-07-22 | |||
| JPS57166178A | 1982-10-13 | |||
| US6179737B1 | 2001-01-30 | |||
| US4114885A | 1978-09-19 | |||
| JP2017136375A | 2017-08-10 |
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