Photography – Having camera indicator – Film condition indicator
Reexamination Certificate
1999-11-19
2001-10-02
Perkey, W. B. (Department: 2851)
Photography
Having camera indicator
Film condition indicator
Reexamination Certificate
active
06298200
ABSTRACT:
FIELD OF THE INVENTION
The invention relates generally to the field of photography, and in particular to an exposure count indicator for a camera.
BACKGROUND OF THE INVENTION
Practically every camera that is available today includes an exposure count indicator. Typically, the exposure count indicator provides a visible indication of the number of frames that remain available to be exposed on a filmstrip in the camera, i.e. the current number of exposures that can be made on the filmstrip. Conversely, the exposure count indicator can provide a visible indication of the number of frames actually exposed on the filmstrip, i.e. the number of exposures actually made. In either case, the exposure count indicator includes a numerical scale of successive exposure count indicia that are evenly spaced from one another. The scale of indicia range from the number “1” which indicates either that only one frame remains available to be exposed on the filmstrip, or only one frame has been actually exposed, to a higher number which is the maximum number of exposures, for example “15”, “24”or “40”. This is shown in prior art U.S. Pat. No. 4,839,678 issued Jun. 13, 1989, and U.S. Pat. No. 2,340,624 issued Feb. 1, 1944.
PRIOR ART PROBLEM
When one views the respective indicia preparatory to exposing successive frames on a filmstrip in the camera, the only warning that there are a few frames left to be exposed is the particular indicia, e.g. “3”, currently being viewed. No other warning is provided that one is coming close to the end of the filmstrip.
SUMMARY OF THE INVENTION
Generally, an exposure count indicator for providing a visible indication of the number of frames that remain available to be exposed or are actually exposed on a filmstrip in a camera, the exposure, count indicator comprising:
a numerical scale of successive exposure count indicia which follow immediately one after the other in sequence, at least some of which that follow immediately one after the other in sequence are spaced differently than others that follow immediately one after the other in sequence.
More specifically, an exposure count indicator for providing a visible indication of the number of frames that remain available to be exposed or are actually exposed on a filmstrip in a camera, comprises:
a numerical scale of successive exposure count indicia at least divided into an initial range of indicia that are evenly spaced from one another a particular distance and a remaining range of indicia that are evenly spaced from one another a different distance less than the particular distance the exposure count indicia that are in the initial range are spaced from one another, in order that when one views the respective indicia in the remaining range after all of the indicia in the initial range have been viewed it can serve as a warning that one is coming closer to the end of the filmstrip because the indicia in the remaining range are spaced apart a lesser distance than the indicia in the initial range.
Preferably, a movable indicating element is supported for movement relative to the exposure count indicia to first operate as a pointer successively at the respective indicia in the initial range and then operate as a pointer successively at the respective indicia in the remaining range.
REFERENCES:
patent: 2340624 (1944-02-01), Simmon
patent: 4338015 (1982-07-01), Holmes
patent: 4839678 (1989-06-01), Zawodny et al.
patent: 6160963 (2000-12-01), Kameyama et al.
Allen Loretta E.
Smart David C.
Eastman Kodak Company
Fields Roger A.
Perkey W. B.
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