Device for determining and/or monitoring a predetermined...

Details Device for determining and/or monitoring a predetermined... Device for determining and/or monitoring a predetermined...

Filed on

2006-05-16

Date issued

2006-05-16

Examiner

Williams, Hezron (Department: 2856)

Patent Class

Measuring and testing

SubClass

Liquid level or depth gauge

Type

Reexamination Certificate

Status

active

Patent number

07043981

Description

ABSTRACT:
Disclosed is a device for determining and/or monitoring a predetermined level. The multipurpose inventive device comprises the following: a mechanical oscillating structure which is placed at the same height as the predetermined level, a pot-shaped housing which is sealed on one end by a membrane (3), piezo-electric elements (15,17) which are arranged in a pile (13) and which, when in operation, are used to place the oscillating structure in an oscillating state, in addition to detecting oscillations according to a momentary level and to make said oscillations accessible for further processing and/or evaluation, being confined between a first and second die (19,21) whose respective ends are adjacent to the pile (13), wherein the pile (13) is clamped along the longitudinal axis of the housing (1) between a pressure screw (24) which is screwed into the housing (1) and the membrane (3).

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patent: 4118793 (1992-12-01), None
patent: 19814669 (1999-10-01), None

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