Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Adjustable Rate Thermostatic Element

IP.com Disclosure Number: IPCOM000048118D
Original Publication Date: 1981-Dec-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Beliveau, M: AUTHOR

Abstract

This article discloses an adjustable rate thermostatic element that solves the problem of matching mechanical displacements per degree of temperature change to other associated functions and is usable over a wide range of temperatures.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 89% of the total text.

Page 1 of 2

Adjustable Rate Thermostatic Element

This article discloses an adjustable rate thermostatic element that solves the problem of matching mechanical displacements per degree of temperature change to other associated functions and is usable over a wide range of temperatures.

The drawing shows the thermostatic element which comprises a first relatively thick base material 10 of low expansion alloy of metal, such as nickel or the like. Overlying this base 10 is a thinner layer of high expansion metal, such as aluminum. This thin layer of the high expansion metal is firmly welded, brazed or riveted at each end to the base material 10. The two materials are selected to be of equal length at normal room temperature. Thus, the material is in a substantially flat position, as shown by the solid drawing.

Affixed to the unit are two slide mechanisms having a square opening through which the two metals may pass. These units can be secured to the base material by screws, etc. In any event they are made to be slideable such that the position between them may be adjusted. When the unit heats, the high expansion metal, such as aluminum, will go upward as it expands faster than the low expansion base material. However, in the case where the slide mechanisms are positioned, the amount of material permitted to expand upward is rigidly controlled by the slides. Thus, the slides cause the amount of bowing to be a function of the mechanical positioning of the slides with respect to the...