Artificial feather for shuttlecock, shuttlecock, and method of manufacturing artificial feather for shuttlecock
a technology of artificial feather and shuttlecock, which is applied in the field of artificial feather for shuttlecocks, can solve the problems of limiting the amount of feather manufactured for use in natural feather shuttlecocks, affecting the durability of hitting impressions, and affecting the performance of natural feather shuttlecocks, so as to achieve the effect of improving the hitting impression without losing durability
Inactive Publication Date: 2014-06-05
YONEX CO LTD
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- Abstract
- Description
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- Application Information
AI Technical Summary
Benefits of technology
The invention provides an artificial feather for shuttlecocks that improves hitting impression without compromising durability.
Problems solved by technology
However, the feather used as the material for natural feather shuttlecocks are collected from the aforementioned waterfowls and moreover, feathers of specific portions of the waterfowl are suitable for shuttlecocks which does not mean that feathers from any portion of the waterfowl can be used and thus the amount of feather for a shuttlecock that can be collected from one waterfowl is a miniscule number.
In other words, there is a limit to the amount of feather manufactured for use in natural feather shuttlecocks.
Further, there has been a situation of a large amount of geese, used for food that had been the main source for feather, being disposed due to bird flu epidemic in recent years.
Therefore, material procurement is predicted to become more difficult and the price of natural feather shuttlecocks to rise further in the future.
Meanwhile, shuttlecocks with resin feather integrally formed in a ring shape is well known as artificial feather shuttlecocks, however, the feathers of these artificial feather shuttlecocks do not move independently as with natural feather shuttlecocks so that flight performance similar to natural feather shuttlecocks is difficult to be achieved.
Method used
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[0086]In order to evaluate the durability and the hitting impression of the artificial feather shuttlecock 1, samples (reference sample, standard sample, samples A-E, comparison samples 1, 2) of the artificial feather shuttlecock 1 with different materials for the rachis portion 14 were made. FIG. 6 is a chart showing the materials (and evaluation results) of the samples.
[0087]The shape of the artificial feather shuttlecock 1 in each of the samples are as shown in FIGS. 1, 2, 4, and 5, and are all the same (the shape, size, and weight and the like of the artificial feather shuttlecock that has not been explained follow the regulations of Nippon Badminton Association Rules). The material of each of the samples are all the same, expect for the material of the rachis portion 14.
[0088]The base material (matrix) of the resin to be the material of the rachis portion 14 is the same in all of the samples, and the material is 12 nylon (PA12).
[0089]“GF” in the chart refers to glass fibe...
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Abstract
An artificial feather for a shuttlecock including: a sheet form vane portion; and a rachis portion supporting the vane portion, the rachis portion being made of resin including glass fiber and carbon nanotube.
Description
TECHNICAL FIELD[0001]The present invention relates to an artificial feather for shuttlecocks, a shuttlecock, and a method of manufacturing artificial feather for a shuttlecock.BACKGROUND ART[0002]As badminton shuttlecocks, there are those using waterfowl feather (natural feather) (natural feather shuttlecocks) and those using artificial feather (artificial feather shuttlecocks) artificially manufactured using nylon resin and the like, for the feathers.[0003]As is well known, natural feather shuttlecocks have a structure using approximately 16 natural feathers of geese, ducks or the like, and the ends of the stems of the feathers are embedded into the hemispherical platform (base portion) made of cork covered with skin. The feather used for natural feather shuttlecocks have a feature of the specific gravity being small and being extremely light. For example, the specific gravity of the stem portion is approximately 0.4 and the vane portion is approximately 0.15. Additionally, feather...
Claims
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Patent Timeline
Login to View More IPC IPC(8): A63B67/18A63B67/19
CPCA63B2209/02B82Y30/00A63B67/187A63B67/19A63B67/18
Inventor YONEYAMA, WATARU
Owner YONEX CO LTD