Film tensioning apparatus

Details Film tensioning apparatus Film tensioning apparatus

1998-06-26

2000-09-12

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310311, H01L 4108

Patent

active

061182087

ABSTRACT:
An acoustic or vibration sensor particularly useful in detecting nano-vibrations includes a body 40 having a generally C-shaped cross-sectional configuration. A base 44 is positioned within the body 40 and has at least one protrusion 68 extending from the base 44 intermediate end portions 48 of the C-shaped cross-section. A film 14 extends about the base 44 and over the protrusion 68 to form a space between a portion of the base 44 and the film 14. The film 14 is engaged with the end portions 48 of the C-shaped cross-section and urged at least partially into the space to place a desired tension on the film.

REFERENCES:
patent: 5624132 (1997-04-01), Blackburn et al.
patent: 5904654 (1999-05-01), Wohltmann et al.
patent: 5915932 (1999-06-01), Nabity et al.

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