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Louver Opening/Shutting Mechanism Using Shape Memory Alloys

IP.com Disclosure Number: IPCOM000043985D
Original Publication Date: 1984-Oct-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Hama, T: AUTHOR

Abstract

For automatically driving a shutter plate to open or shut louver openings for a printer box according as the temperature in the box increases or decreases, a spring made of shape memory alloys is provided at a shutter plate for the louver. As the print duty is increased, the temperature in the box is also increased and, when it reaches a critical temperature inherent in the alloy, the spring is extended to push the shutter plate at a predetermined distance to align the openings of the shutter plate with those of the louver, so that the temperature in the box can be decreased through the openings.

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Louver Opening/Shutting Mechanism Using Shape Memory Alloys

For automatically driving a shutter plate to open or shut louver openings for a printer box according as the temperature in the box increases or decreases, a spring made of shape memory alloys is provided at a shutter plate for the louver. As the print duty is increased, the temperature in the box is also increased and, when it reaches a critical temperature inherent in the alloy, the spring is extended to push the shutter plate at a predetermined distance to align the openings of the shutter plate with those of the louver, so that the temperature in the box can be decreased through the openings. As the temperature is lowered in the above manner, the shape of the spring returns to the origin of the compressed state to shut the louver, whereby the noise of the printer mechanism is substantially prevented from coming out of the printer box.

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