Title:
CIRCUMFERENCE GAUGE
Document Type and Number:
Japanese Patent JP3425433
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To preform by one person, swelling up an official ball to a specific circumference dimension by applying an official gauge (a) to the maximum circumference position of the official ball W.
SOLUTION: A collapsed official ball W is inserted in a circumference gauge 1 combined with a pair of measurement gauges 2 and 2a of endless ring having the same length in one body so as to cross at two intersection portion locations. Only by injecting air in the official ball W until the outer surface contacts the both inner surfaces of the measurement gauges 2 and 2a, the official ball W becomes of specific circumference dimension and the injection and measurement work can be done by one person.
Inventors:
Kouji Namikami
Application Number:
JP2001179734A
Publication Date:
July 14, 2003
Filing Date:
June 14, 2001
Export Citation:
Assignee:
Kouji Namikami
International Classes:
G01B3/10; G01B5/02; (IPC1-7): G01B3/10; G01B5/02
Domestic Patent References:
| JP6154201U |
Other References:
【文献】登録実用新案3005814(JP,U)
Attorney, Agent or Firm:
Monichi Nishiyama