Light intercepting device of a camera

Details Light intercepting device of a camera Light intercepting device of a camera

1981-01-19

1982-04-13

Griffin, Donald A.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 716, 354288, G03B 1904, G03B 104, G03B 1702

Patent

active

043244700

ABSTRACT:
In a camera which has a through-hole formed in a portion of a wall forming a chamber for containing therein a magazine of roll film wound around a spool shaft which faces the end surface of the spool shaft and to which is mountable an electric film rewind device having a drive shaft inserted into the chamber through the through-hole and coupled to the spool shaft and wherein a light-intercepting ring having a contact surface bearing against the end surface of the spool shaft and biased axially of the spool shaft toward the interior of the chamber is slidably fitted in the through-hole, the light-intercepting ring has on said contact surface an annular ridge projected axially of the spool shaft. The ridge is provided at a location which is adjacent to and along the end surface during the contact thereof with the end surface.

REFERENCES:
patent: 3474714 (1969-10-01), Bihlmaier et al.
patent: 3589639 (1971-06-01), Engelsmann et al.
patent: 3679148 (1972-07-01), Daitoku et al.

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