Photography – Camera detail – Body structure or housing
Reexamination Certificate
2000-04-07
2001-11-13
Gray, David M. (Department: 2851)
Photography
Camera detail
Body structure or housing
C396S538000
Reexamination Certificate
active
06317569
ABSTRACT:
FIELD OF THE INVENTION
The invention relates generally to the field of photography, and in particular to cameras. More specifically, the invention relates to a camera with a multi-function cartridge-positioning door-opening spring.
BACKGROUND OF THE INVENTION
Prior art U.S. Pat. No. 5,608,485 issued Mar. 4, 1997 discloses a camera having a well known chamber for receiving a film cartridge. A rotatable support spindle projects into the chamber to coaxially engage an exposed end of a film spool substantially inside the cartridge, when the cartridge is loaded in the chamber. A bottom cover-door pivots open to open the chamber and pivots closed to close the chamber. A multi-function spring is mounted on an inner side of the cover-door to urge the cartridge to coaxially engage the exposed spool end with the support spindle, when the cover-door is pivoted closed, and to urge the cover-door to pivot open, when the cover-door is unlatched in order to remove the cartridge from the chamber.
SUMMARY OF THE INVENTION
A camera comprising a cartridge loading chamber for receiving a film cartridge with a rotatable film spool having an exposed spool end, a rotatable support spindle which projects into the chamber to coaxially engage the spool end when the film cartridge is in the chamber, a door which pivots open to open the chamber and pivots closed to close the chamber, and a multi-function spring which urges the film cartridge to coaxially engage the spool end with the support spindle and urges the door to pivot open, is characterized in that:
the multi-function spring is a single springy piece which has a cartridge-positioning springy portion that is permanently positioned inside the chamber to urge the film cartridge to coaxially engage the spool end with the support spindle, regardless whether the door is closed, and has a door-opening spring portion that is permanently positioned outside the chamber to press against the door when the door is closed, regardless whether the film cartridge is in the chamber.
REFERENCES:
patent: 4361391 (1982-11-01), Haraguchi et al.
patent: 5506650 (1996-04-01), Stephenson, III et al.
patent: 5608485 (1997-03-01), Kataoka et al.
patent: 5682570 (1997-10-01), Wakabayashi
Eastman Kodak Company
Fields Roger A.
Gray David M.
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