GB993491A - Improvements in or relating to electro-mechanical filters - Google Patents
Improvements in or relating to electro-mechanical filtersInfo
- Publication number
- GB993491A GB993491A GB3578862A GB3578862A GB993491A GB 993491 A GB993491 A GB 993491A GB 3578862 A GB3578862 A GB 3578862A GB 3578862 A GB3578862 A GB 3578862A GB 993491 A GB993491 A GB 993491A
- Authority
- GB
- United Kingdom
- Prior art keywords
- projections
- coupling
- wires
- lie
- coupling wires
- 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
- H03H9/46—Filters
- H03H9/48—Coupling means therefor
- H03H9/50—Mechanical coupling means
Abstract
993,491. Electromechanical filters. SIEMENS & HALSKE A.G. Sept. 20, 1962 [Sept. 25, 1961], No. 35788/62. Heading H3U. Coupling wires 3, 4 are attached to projections 13, 14 on the surfaces of resonators, e.g. flexural resonators 1, 2. These may be associated with transducers 5, 6 in the form of electroded plates of electrostrictive material. The coupling wires may be spot welded to the projections which are formed, e.g. by embossing or by extruding the resonator with a longitudinal rib. Alternatively, the projections may comprise two small tongues, one on either side of the coupling wire. As shown, the coupling wires lie outside the nodal lines A, A<SP>1</SP> and B, B<SP>1</SP> and transmit vibrations by bending. The filter is supported by bent wires 15-18 which lie in nodal planes and are subject to torsion. In an alternative embodiment, the coupling wires lie on the nodal lines and serve also as supporting members.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES0075908 | 1961-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB993491A true GB993491A (en) | 1965-05-26 |
Family
ID=7505722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3578862A Expired GB993491A (en) | 1961-09-25 | 1962-09-20 | Improvements in or relating to electro-mechanical filters |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE622792A (en) |
| CH (1) | CH405523A (en) |
| DE (1) | DE1616684B1 (en) |
| GB (1) | GB993491A (en) |
| NL (2) | NL141338B (en) |
| SE (1) | SE310527B (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1933306A (en) * | 1931-04-30 | 1933-10-31 | Gen Electric | Electrical frequency analyzer |
-
0
- NL NL283596D patent/NL283596A/xx unknown
- BE BE622792D patent/BE622792A/xx unknown
-
1961
- 1961-09-25 DE DE19611616684 patent/DE1616684B1/en active Pending
-
1962
- 1962-08-31 CH CH1037262A patent/CH405523A/en unknown
- 1962-09-20 GB GB3578862A patent/GB993491A/en not_active Expired
- 1962-09-25 SE SE1029762A patent/SE310527B/xx unknown
- 1962-09-25 NL NL283596A patent/NL141338B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1616684B1 (en) | 1969-11-06 |
| CH405523A (en) | 1966-01-15 |
| NL141338B (en) | 1974-02-15 |
| NL283596A (en) | |
| SE310527B (en) | 1969-05-05 |
| BE622792A (en) |
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