# US 5,708,854 A · One-time-use camera has driver for closing film cassette which is removed with closed cassette to disable camera after completed use

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- Number: US 5,708,854 A
- Document ID: US5708854A
- Status: Granted
- Kind: A
- Application number: 08/590,662
- Filed: 1996-01-24
- Granted: 1998-01-13
- Earliest claimed: 1996-01-24
- Assignees: Eastman Kodak Company
- Inventors: David Clinton Smart; Douglas Harold Pearson
- Web page: https://patentgrep.com/patent/US5708854A

## CPC

- G03B 17/02: Bodies
- G03B 17/30: Locating spools or other rotatable holders of coiled film
- G03B 2217/265: Details of light-proofing
- G03B 2217/268: Unloading the cartridge from the camera; Loading the cartridge into the camera
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)

## Abstract

A camera for use with a film cassette having a movable light lock supported within a film egress/ingress slot to be moved closed after a filmtrip is wound into the cassette, comprises a cassette-receiving chamber, and a movable driver to be moved to close the light lock before the cassette is removed from the chamber. An exterior ingress opening to the chamber is provided to admit an insertion tool into the chamber to push the cassette out of the chamber. The driver is located for the tool to push the driver out of the chamber with the cassette, whereby the camera will be disabled.

## Claims

### Claim 1

A camera for use with a film cassette having a movable light lock supported within a film egress/ingress slot to be moved closed after a filmstrip is wound into the cassette, comprises a cassette-receiving chamber, and a movable driver to be moved to close the light lock before the cassette is removed from said chamber, and is characterized in that:
an exterior ingress opening to said chamber is provided to admit an insertion tool into the chamber to push the cassette out of the chamber; and
said driver is located for the tool to push the driver out of said chamber with the cassette, whereby said camera will be disabled.

### Claim 2 (depends on 1)

A camera as recited in claim 1, wherein said driver has an engageable portion that is accessible through said ingress opening when the driver is moved to close the light lock, to permit the tool to be inserted through the ingress opening into engagement with said engageable portion to push the driver out of said chamber with the cassette, and that is not accessible through the ingress opening when the driver is not moved to close the light lock, to prevent the tool from being inserted through the ingress opening into engagement with said engageable portion.

### Claim 3 (depends on 2)

A camera as recited in claim 2, wherein said ingress opening and said engageable portion are similarly configured to be aligned when said driver is moved to close the light lock and not to be aligned when the driver is not moved to close the light lock.

### Claim 4 (depends on 2)

A camera as recited in claim 2, wherein film sensor means for sensing the presence of the filmstrip outside the cassette, proximate the slot, and for sensing the absence of the filmstrip outside the cassette once the filmstrip is wound into the cassette is connected to said driver to permit the driver to be moved to close the light lock in response to the film sensing means sensing the absence of the filmstrip.

### Claim 5

A camera for use with a film cassette having a movable light lock supported within a film egress/ingress slot to be moved closed after a filmstrip is wound into the cassette, comprises a cassette-receiving chamber, and a movable driver to be moved to close the light lock, and is characterized in that:
an exterior ingress opening to said chamber is provided to admit an insertion tool into the chamber; and
said driver has an engagement opening to receive the tool which is accessible through said ingress opening when the driver is moved to close the light lock at least partway, whereby the tool cannot be inserted through said ingress opening into said engagement opening when said driver is not moved to close the light lock.

### Claim 6

A camera for use with a film cassette having a movable light lock supported within a film egress/ingress slot to be moved closed after a filmstrip is wound into the cassette, comprises a cassette-receiving chamber, and a movable driver to be moved to close the light lock before the cassette is removed from said chamber, and is characterized in that:
an exterior ingress opening to said chamber is configured to admit a mating tool into said chamber to push the cassette out of the chamber; and
said driver has an engagement opening to receive the tool to push the driver out of said chamber with the cassette which is configured similar to said ingress opening and is moved into alignment with said ingress opening as the driver is moved to close the light lock, whereby the tool cannot be inserted through said ingress opening into said engagement opening when said driver is not moved to close the light lock.