Title:
PNEUMATIC PRESSURE INDICATING ELEMENT FOR BALL FOR BALL GAME FILLED WITH AIR AND BALL FOR BALL GAME EQUIPPED WITH PNEUMATIC PRESSURE INDICATING ELEMENT
Document Type and Number:
WIPO Patent Application WO/2008/029487
Kind Code:
A1
Abstract:
A pressure measurement element for a ball for a ball game which exhibits durability
with simple structure without sacrificing the performance of the ball for a ball
game. The pneumatic pressure indicating element for a ball for a ball game filled
with air comprises a measuring means arranged at a position opposing an air injection
valve of the ball for a ball game filled with air including a tube formed of an elastic
body of hollow spherical shape and filled with compressed air and a skin layer
formed on the outer circumference thereof and measuring the internal pressure
of air filled in the tube, and a means for indicating the measurements from the
measuring means. A ball for a ball game equipped with this element is also provided.
Inventors:
SHISHIDO HIDEOMI (JP)
Application Number:
PCT/JP2006/318230
Publication Date:
March 13, 2008
Filing Date:
September 07, 2006
Export Citation:
Assignee:
SHISHIDO HIDEOMI (JP)
International Classes:
A63B41/12; A63B43/00
Domestic Patent References:
| WO2004018054A1 | 2004-03-04 |
Foreign References:
| US5677492A | 1997-10-14 | |||
| US5755634A | 1998-05-26 | |||
| JPH09178586A | 1997-07-11 | |||
| JPH08247871A | 1996-09-27 |
Attorney, Agent or Firm:
OKADA, Kei (Hosoya-cho Ota-sh, Gunma 42, JP)
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