Film take-up spool

Details Film take-up spool Film take-up spool

1989-05-09

1990-06-05

Petrakes, John

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 711, 354275, G03B 1726

Patent

active

049307126

ABSTRACT:
A take-up spool in a camera comprises a cylindrically-shaped major core portion having an outer peripheral surface for supporting a filmstrip, a minor core portion arranged coaxially with respect to the major core portion and having an outer peripheral surface located radially inward of the outer peripheral surface of the major core portion, and a plurality of film catching members projecting from the outer peripheral surface of the minor core portion. A series of film guiding surfaces equal in number to the number of film catching members extend radially between the respective peripheral surfaces of the major and minor core portions. Each of the film guiding surfaces is inclined at substantially the same angle as a tapered leading end of the filmstrip to guide the filmstrip toward one of the film catching members. The film catching members extend radially outward only as far as the outer peripheral surface of the major core portion to enable at least one of the film catching members to support the filmstrip in conformity with that peripheral surface.

REFERENCES:
patent: 4181271 (1980-01-01), Kluczynski et al.
patent: 4275855 (1981-06-01), Wakabayashi
patent: 4303325 (1981-12-01), Seely
patent: 4398679 (1983-08-01), Kluczynski et al.
patent: 4411509 (1983-10-01), Shirai
patent: 4687311 (1987-08-01), Desormeaux

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