DK152639C - PROCEDURE AND APPARATUS FOR SPREADING AND DETERMINING A THIN FILM - Google Patents
PROCEDURE AND APPARATUS FOR SPREADING AND DETERMINING A THIN FILMInfo
- Publication number
- DK152639C DK152639C DK445382A DK445382A DK152639C DK 152639 C DK152639 C DK 152639C DK 445382 A DK445382 A DK 445382A DK 445382 A DK445382 A DK 445382A DK 152639 C DK152639 C DK 152639C
- Authority
- DK
- Denmark
- Prior art keywords
- spreading
- procedure
- determining
- thin film
- thin
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/24—Tensioning by means acting directly on free portions of diaphragm or cone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK445382A DK152639C (en) | 1982-10-08 | 1982-10-08 | PROCEDURE AND APPARATUS FOR SPREADING AND DETERMINING A THIN FILM |
EP19830903379 EP0121555A1 (en) | 1982-10-08 | 1983-10-07 | Diaphragm stretching apparatus |
PCT/DK1983/000093 WO1984001683A1 (en) | 1982-10-08 | 1983-10-07 | Diaphragm stretching apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK445382A DK152639C (en) | 1982-10-08 | 1982-10-08 | PROCEDURE AND APPARATUS FOR SPREADING AND DETERMINING A THIN FILM |
DK445382 | 1982-10-08 |
Publications (3)
Publication Number | Publication Date |
---|---|
DK445382A DK445382A (en) | 1984-04-09 |
DK152639B DK152639B (en) | 1988-03-28 |
DK152639C true DK152639C (en) | 1989-03-13 |
Family
ID=8133650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK445382A DK152639C (en) | 1982-10-08 | 1982-10-08 | PROCEDURE AND APPARATUS FOR SPREADING AND DETERMINING A THIN FILM |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0121555A1 (en) |
DK (1) | DK152639C (en) |
WO (1) | WO1984001683A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4568414A (en) * | 1984-09-21 | 1986-02-04 | At&T Technologies, Inc. | Methods and apparatus for tensioning sheet material |
EP0305540B1 (en) * | 1987-03-04 | 1994-11-23 | Hosiden Corporation | Diaphragm unit of a condenser microphone, a method of fabricating the same, and a condenser microphone |
US6532293B1 (en) * | 2000-02-08 | 2003-03-11 | Knowles Electronics Llc | Acoustical transducer with reduced parasitic capacitance |
US7184563B2 (en) | 2003-03-04 | 2007-02-27 | Knowles Electronics Llc. | Electret condenser microphone |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE361603A (en) * | 1928-06-18 | |||
US1943425A (en) * | 1931-12-26 | 1934-01-16 | Kellogg Switchboard & Supply | Diaphragm |
GB884364A (en) * | 1957-05-02 | 1961-12-13 | Rola Celestion Ltd | Improvements in or relating to electrostatic loudspeakers |
JPS5110924A (en) * | 1974-07-16 | 1976-01-28 | Sony Corp |
-
1982
- 1982-10-08 DK DK445382A patent/DK152639C/en not_active IP Right Cessation
-
1983
- 1983-10-07 EP EP19830903379 patent/EP0121555A1/en not_active Withdrawn
- 1983-10-07 WO PCT/DK1983/000093 patent/WO1984001683A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
DK152639B (en) | 1988-03-28 |
WO1984001683A1 (en) | 1984-04-26 |
DK445382A (en) | 1984-04-09 |
EP0121555A1 (en) | 1984-10-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PHB | Application deemed withdrawn due to non-payment or other reasons | ||
RPHB | Correction of: application shelved due to non-payment |
Free format text: 880704 |
|
RPHB | Correction of: application shelved due to non-payment | ||
PBP | Patent lapsed |