Nova Patents
EP0244736A3

Pressure detector

Abstract

The pressure transducer is provided with a metallic housing which has a closed pressure chamber (7) with a membrane (8) which separates it from the outer region and absorbs its pressure. Furthermore, sensors exposed to the pressure are arranged in the pressure chamber, which can be connected to an evaluation circuit by way of feedthroughs, possibly pressure-tight and electrically isolated. Here, a bar magnet located in the pressure chamber (7) is arranged on the type of membrane and at least two sensors (10) are provided, each of which is designed as a Hall element (10) with an active plane and extends with play up to the bar magnet (15). The Hall elements (l0) are arranged in differential circuit one behind the other

Term

Term ended

Projected expiry passed 28 April 2007, 19.4 years ago.

  1. Priority
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  4. Projected expiry
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Every citation, both ways

Citations
DocumentRelationOfficeCategoryCited during
EP0088270A2CitesEuropean Patent Office (EPO)ASearch report
DE2913935A1CitesGermanyASearch report
DE2946515A1CitesGermanyASearch report
US4581941ACitesUnited States of AmericaASearch report
WO8201068A1CitesWorld Intellectual Property Organization (WIPO)ASearch report