EP 3000508 A4 20170118 - METHOD FOR INCREASING INTERNAL PRESSURE OF HOLLOW BALL AND DEVICE THEREFOR
Title (en)
METHOD FOR INCREASING INTERNAL PRESSURE OF HOLLOW BALL AND DEVICE THEREFOR
Title (de)
VERFAHREN ZUR ERHÖHUNG DES INNENDRUCKS EINER HOHLKUGEL UND VORRICHTUNG DAFÜR
Title (fr)
PROCÉDÉ ET DISPOSITIF D'ACCROISSEMENT DE LA PRESSION INTERNE D'UNE BALLE CREUSE
Publication
Application
Priority
- JP 2013114997 A 20130531
- JP 2014061044 A 20140325
- JP 2014063302 W 20140520
Abstract (en)
[origin: EP3000508A1] [Object] To provide a method for easily increasing the internal pressure of a hollow ball in a practical time. [Solution] A method for increasing the internal pressure of a hollow ball according to the present invention includes the steps of (1) putting a hollow ball 18 including an outer shell and a space surrounded by the outer shell, into a housing portion 4; (2) filling the housing portion 4 with a gas which is more excellent in permeability relative to the outer shell than oxygen gas and nitrogen gas; and (3) causing the gas to pass through the outer shell. When the outer shell contains natural rubber, preferably, in the step (2), the housing portion is filled with a gas having a permeability coefficient of 20 × 10 -17 m 4 /(N€¢s) at 25°C for the natural rubber. Preferably, in the step (2), the housing portion is filled with carbon dioxide gas.
IPC 8 full level
A63B 39/02 (2006.01); A63B 47/00 (2006.01); A63B 102/02 (2015.01)
CPC (source: EP)
A63B 39/025 (2013.01); A63B 39/027 (2013.01); A63B 2039/022 (2013.01); A63B 2102/02 (2015.10)
Citation (search report)
- [XI] WO 2011087628 A2 20110721 - DIRST WILLIAM F [US]
- [X] US 7658211 B1 20100209 - DIRST WILLIAM F [US]
- See references of WO 2014192585A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3000508 A1 20160330; EP 3000508 A4 20170118; CN 105246563 A 20160113; CN 105246563 B 20181207; JP 2015006315 A 20150115; JP 6423164 B2 20181114; WO 2014192585 A1 20141204
DOCDB simple family (application)
EP 14803727 A 20140520; CN 201480031177 A 20140520; JP 2014061044 A 20140325; JP 2014063302 W 20140520