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Browse Prior Art Database

THERMAL ACTUATOR

IP.com Disclosure Number: IPCOM000025616D
Original Publication Date: 1986-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 80K

Publishing Venue

Xerox Disclosure Journal

Abstract

A bi-metallic strip is a compound strip of metal formed by welding together two strips of metal whose coefficients of thermal expansion are different. A change in temperature causes the two metals to change in length differentially and in an amount proportional to the temperature resulting in a curvature of the bi-metalk strip. The Figures illustrate how such bi-metallic

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XEROX DISCLOSURE JOURNAL

THERMAL ACTUATOR

C Proposed Carl I. Bouwens 1 assifi ca tio n

U.S. C1.337/36

Int. C1. HOlh 61/00

FIG 2

A bi-metallic strip is a compound strip of metal formed by welding together two strips of metal whose coefficients of thermal expansion are different. A change in temperature causes the two metals to change in length differentially and in an amount proportional to the temperature resulting in a curvature of the bi-metalk strip. The Figures illustrate how such bi-metallic

Volume 11 Number 5 September/October 1986 221

[This page contains 1 picture or other non-text object]

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THERMALACTUATOR(Cont'd)

strips can be used to control the position of or apply a force to a machine component and in particular, to a machine Component in an electrostatographic reproducing apparatus. A flexible, electrically insulated heating element can be bonded to a bi-metallic strip and the power to the strip controlled by a microprocessor in the machine In this way machine components such as blades or rolls can be engaged in a highly controlled manner and automatically disengaged when the machine is idle Figure 1 illustrates the use of such a bi-metallic strip 10 with a insulated heating element applied to it to control the position of a roll 12 which is mounted on a shaft 14 which has a positioning element 16 connected to the bi-metallic strip which is connected to one end of the positioning block 18, In opposition to the metallic strip when locating t...