Piezoelectric device

• US 20030074971A1
• Filed: 10/02/2002
• Published: 04/24/2003
• Est. Priority Date: 10/02/2001
• Status: Active Grant

• Current Assignee: Value Privatstiftung
• Original Assignee: Gaston Glock
• Inventors: Glock, Gaston
• Granted Patent: US 6,817,239 B2
• Time in Patent Office: Days
• US Class Current: 73/649
• CPC Class Codes: G01L 1/16 using properties of piezoelectric devices
• CPC Class Codes: G01L 5/14 for measuring the force of explosions; for measuring the energy of projectiles
• CPC Class Codes: G01N 2291/02827 Elastic parameters, strength or force
• CPC Class Codes: Y10S 310/80 Piezoelectric polymers, e.g. PVDF

Abstract

A piezoelectric device is assembled from a piezofilm sensor enclosed between two layers of a multilayer board with a printed circuit.

Claims

1. A piezoelectric device including a piezofilm sensor and a multilayer board having a printed circuit wherein the piezofilm sensor is enclosed between two adjacent layers of the board.

2. The device according to claim 1, wherein the surface of the piezofilm sensor is at least one fifth the surface of each adjacent layer.

3. The device according to claim 1, wherein the piezofilm sensor includes recesses sized to allow through-bondings of the layers between which the piezofilm sensor is arranged.

4. The device according to claim 1, wherein at least one of the two layers between which the piezofilm sensor is enclosed includes a recess on a side facing the piezofilm sensor, the recess being sized and configured to receive the piezofilm sensor.

5. The device according to claim 1, wherein the piezofilm sensor is configured as a measuring region for measuring mechanical impulses.

6. The device according to claim 5, wherein the mechanical impulse is caused by a hit, vibrations or an acceleration.