GB499707A - Piezo-electric vibration systems - Google Patents
Piezo-electric vibration systemsInfo
- Publication number
- GB499707A GB499707A GB14357/38A GB1435738A GB499707A GB 499707 A GB499707 A GB 499707A GB 14357/38 A GB14357/38 A GB 14357/38A GB 1435738 A GB1435738 A GB 1435738A GB 499707 A GB499707 A GB 499707A
- Authority
- GB
- United Kingdom
- Prior art keywords
- masses
- crystal
- piezo
- threaded
- clamping ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/0504—Holders; Supports for bulk acoustic wave devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/09—Elastic or damping supports
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
499,707. Piezo - electric crystals. STANDARD TELEPHONES & CABLES, Ltd. May 13, 1938, No. 14357. Convention date, May 14, 1937. [Class 40 (v)] Additional masses 2, 3, Fig. 2, are clamped to two opposite faces of a crystal 1 to modify its natural frequency. The masses may be of metal such as steel, aluminium or those known under the Registered Trade Marks "Elinvar" and "Invar" and the frequency may be adjusted by altering the amount of an additional piece of solder &c. 4 fixed to the member 2. The masses 2, 3, Fig. 3, are cylindrical and threaded reversely to be engaged by a clamping ring 8, or they may be flanged as shown in Fig. 4 and pressed on to the crystal 1 by rings 7 over which the clamping ring 8 is threaded. The ring 8 may be provided with fixing lugs. A spring mounting enabling the pressure of the masses on the crystal to be varied may be provided. The Specification as open to inspection under Sect. 91 comprises also a "transformer" wherein several crystals separated by conducting or non-conducting discs are provided. It is also stated that the masses may be cemented to the crystal. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR903471X | 1937-05-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB499707A true GB499707A (en) | 1939-01-27 |
Family
ID=9404642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14357/38A Expired GB499707A (en) | 1937-05-14 | 1938-05-13 | Piezo-electric vibration systems |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE903471C (en) |
FR (1) | FR832818A (en) |
GB (1) | GB499707A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE755220C (en) * | 1939-09-29 | 1953-12-14 | Zeiss Carl Fa | Piezoelectric coupling device for high frequency circuits |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR667387A (en) * | 1928-04-19 | 1929-10-16 | Improvements to frequency stabilizers | |
GB414764A (en) * | 1933-02-13 | 1934-08-13 | Marcel Charles Tournier | Improvements in mechanical frequency standards such as piezoelectric crystals |
-
1937
- 1937-05-14 FR FR832818D patent/FR832818A/en not_active Expired
-
1938
- 1938-05-12 DE DEI3307D patent/DE903471C/en not_active Expired
- 1938-05-13 GB GB14357/38A patent/GB499707A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE755220C (en) * | 1939-09-29 | 1953-12-14 | Zeiss Carl Fa | Piezoelectric coupling device for high frequency circuits |
Also Published As
Publication number | Publication date |
---|---|
DE903471C (en) | 1954-02-08 |
FR832818A (en) | 1938-10-04 |
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