Browse Prior Art Database

Diaphragm Actuator

IP.com Disclosure Number: IPCOM000095293D
Original Publication Date: 1965-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Lemke, GA: AUTHOR

Abstract

A pressure responsive diaphragm actuator is shown in plan view in drawing 1 and in cross-section along A-A in drawing 2. The actuator comprises a body of resilient material 10 having cavity 12 formed interiorly. An opening is provided in material 10 for connecting a pressure supply line 18 to the actuator. The actuator can be secured at one end to rigid member 20.

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Diaphragm Actuator

A pressure responsive diaphragm actuator is shown in plan view in drawing 1 and in cross-section along A-A in drawing 2. The actuator comprises a body of resilient material 10 having cavity 12 formed interiorly. An opening is provided in material 10 for connecting a pressure supply line 18 to the actuator. The actuator can be secured at one end to rigid member 20.

Cavity 12 is formed in material 10 so that one wall 16 has less thickness than opposite wall 14. Thus, when pressure is introduced into cavity 12, thinner wall 16 deflects more than thick wall 14. The result of this action is shown in drawing
3. The differential expansion causes the unrestrained end of member 10 to deflect in an upward direction. Deflection D is due to the introduction of pressure into cavity 12 with the resultant deformation of its opposite walls.

The device can be utilized as a pressure sensitive device to actuate a mechanical linkage, an electrical switch or the like. Material 10 can, for example, be formed from rubber or even from thin sections of metal. This is provided one wall is thinner than the other and that the overall assembly is sufficiently flexible so that the differential flexing of opposite walls 14 and 16 is able to cause the entire material 10 to be deflected. The device is shown mounted at one end to member 20. However, it can be fixedly mounted at some other spot on material 10 depending on the precise motion desired.

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