To display a date with high precision and without air bubbles remaining on teeth.
The plastic date indicator 1 integrally includes its body 5 which has a central hole 2 and is formed in a ring-plate shape; teeth 4 which are arranged circumferentially, on the inner circumferential edge of the central hole 2 of the body 5 at regular spacings and extend radially inward; a date display section 3, which is provided on the front side of the body 5 and on which figures indicating dates are displayed; and a plurality of gate traces 7 which are provided on the back side of the body 5 spaced in circumferential manner. Any two gate traces 7 which are adjacent to each other circumferentially are arranged in a circumferential manner, so as to have an equal angle, with the tooth bottom part 6 of the teeth 4 as a standard.
ASANO SHUJI
SAKUMI MICHIHIKO
KIMURA REIKO
JPS60148978U | 1985-10-03 | |||
JP2005022368A | 2005-01-27 | |||
JPH066800U | 1994-01-28 | |||
JP2003231156A | 2003-08-19 |
Noriaki Uchino
Nobuyuki Kimura