Johnson Service Corp.

Johnson Service Company

Ivshin Yefim

Paul E Thoma

Jeannine O Colla

Carl F Klein

Scott L Spence

Paul H Froehling

Gary F Oman

Arthur Barootian

Scott Lee Spence

Gary Francis Oman

Paul Edward Thoma

Carl Frederick Klein

Paul Harold Froehling

A capacitance elastomeric pressure sensor includes top and bottom mounting plates arranged to support a pair of electrode layers. The first electrode layer is supported on the upper surface of a dielectric disc held by an upper mounting plate. The second electrode layer is located beneath the disc and includes a conductive elastomeric layer overlying an elastomeric support layer. In the preferred embodiment, the elastomer is a silicone elastomer and the conductive layer is formed by admixing a conductive carbon powder with the silicone. The sensor is particularly effective in sensing pressure changes in this low range, e.g. 0-1 inch of water. In the most preferred embodiment the elastomeric layer is prestrained for temperature compensation.

Elastomer type low pressure sensor

Growing community of inventors

Shorewood, WI, United States of America

Ivshin Yefim