Capacitor transducer

• US 3,249,833 A
• Filed: 11/16/1964
• Issued: 05/03/1966
• Est. Priority Date: 11/16/1964
• Status: Expired due to Term

• Current Assignee: Robert E. Vosteen
• Original Assignee: Robert E. Vosteen
• Inventors: Vosteen, Robert E.
• Application Number:
  US04/411,642
• Time in Patent Office: 533 Days
• US Class Current: 361/283.1
• CPC Class Codes: G01L 13/025 using diaphragms
• CPC Class Codes: G01L 19/04 Means for compensating for effects of changes of temperature , i.e. other than electric compensation
• CPC Class Codes: G01L 9/0048 Details about the mounting of the diaphragm to its support or about the diaphragm edges, e.g. notches, round shapes for stress relief
• CPC Class Codes: G01L 9/0072 using variations in capacitance
• CPC Class Codes: G01L 9/12 by making use of variations in capacitance , i.e. electric circuits therefor

Claims

1. AN ELECTRICAL CAPACITOR DEVICE COMPRISING A PAIR OF CAPACITOR PLATES ARRANGED PARALLEL TO EACH OTHER, A THIN METALLIC FOIL PARALLEL TO AND DISPOSED BETWEEN SAID PLATES, A PAIR OF ANNULAR FLANGES HAVING PARALLEL FACES OPPISITE EACH OTHER WITH SAID FOIL THEREBETWEEN, AND MEANS IN CONTACT WITH THE FOIL FOR STRECTCHING IT WHILE CLAMPING IT BETWEEN THE FLANGES, SAID MEANS COMPRISING SURFACE ON AT LEAST ONE OF SAID FLANGE FACES DEFINING AN ANNULAR GROOVE THEREIN, A RING LYING PARTIALLY IN SAID GROOVE, SIAD FOIL BEING OF SUCH SIZE AS TO OVERLIE SAID RING AND GROOVE SO AS TO BE STRETCHED WHEN THE FLANGES ARE CLAMPED TOGETHER, AND MEANS FOR FASTENING SAID FLANGE TOGETHER TO CLAMP THE FOIL BETWEEN THE FLANGES AFTER STRETCHING THE FOIL BETWEEN SAID RING AND GROOVE.