The apparatus includes a membrane support, and a hydrophilic polymer membrane matrix disposed on the membrane support.

The apparatus further includes a membrane housing configured to hold the membrane support.

The diaphragm piston (21) extends through the diaphragm base (1) and the diaphragm piston (21) covers a pump chamber (31) of the diaphragm cover (3).

Advantageously, the membrane support comprises a piezoelectric membrane tensioning mechanism.

The membrane carrier and electrode are connected to one another such that the membrane carrier extends past the electrode by a predetermined amount.

The top membrane support assembly is positionable over the bottom membrane support assembly with the upper opening aligned with the lower opening.

The pressure compensation device comprises a membrane support and a longitudinally extending membrane system.

In a similar manner to the microphone capsule, the sound transducer has an adhesive tape ring (30) between the diaphragm (20) and the diaphragm carrier, which ring is used to fasten the diaphragm (20) to the diaphragm carrier (40).

The invention relates to an hydrophilic membrane comprising a membrane carrier and a hydrophilic coating with good properties.

A sensor window membrane (70) is coupled to the membrane holder (60) proximate the aperture (68).

A membrane support apparatus is provided which includes a top section, a mating base section and a membrane support surface within the mated sections.

The latter mechanical assembly includes a membrane support (101) on which the piezoelectric membrane is mounted, and a wave-propagating mechanism (108) disposed on one side of the piezoelectric membrane.

A membrane (3) is supported on a membrane support (2) which is mounted within the housing (1).

Also provided is a separation membrane that uses the separation membrane support to have high film peel strength, and a fluid separation membrane.

The membrane support base defines one or more air passages.