GB625533A - Improvements in piezoelectric crystal apparatus - Google Patents
Improvements in piezoelectric crystal apparatusInfo
- Publication number
- GB625533A GB625533A GB21774/47A GB2177447A GB625533A GB 625533 A GB625533 A GB 625533A GB 21774/47 A GB21774/47 A GB 21774/47A GB 2177447 A GB2177447 A GB 2177447A GB 625533 A GB625533 A GB 625533A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frame
- electrode
- crystal
- spring
- hinged
- 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
- 239000013078 crystal Substances 0.000 title abstract 7
- 239000011810 insulating material Substances 0.000 abstract 1
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 abstract 1
- 239000010956 nickel silver Substances 0.000 abstract 1
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
- H03H9/09—Elastic or damping supports
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
- H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
- H03H3/04—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
625,533. Piezo-electric crystal mountings. WESTERN ELECTRIC CO., Inc. Aug. 7, 1947, No. 21774. Convention date, Sept. 3, 1941. [Class 40 (v)] A piezo-electric crystal element is clamped by its periphery between a fixed electrode and a frame work, the other electrode being hinged to the framework to permit adjustment of the air-gap. As shown, the hinged electrode 51, Fig. 5, is incorporated in a plug-in holder, Fig. 4, having the supporting pins (not shown) in its base. A crystal plate 40 is supported between raised corners of the fixed electrode 50 and corresponding projections on a frame 52. This frame, which slides into grooves 61 in the sides of case 10 has an aperture, opposite the middle of the crystal, in which the second electrode 51 is hinged by a spring 72 fastened to the frame and if desired insulated therefrom. The fixed electrode 50 is pressed against the crystal by a V-shaped spring 56 bearing on a plate 54 which rests on the far side of the case. The hinged electrode is adjusted by a nut 80 having a nose (not shown) bearing on the electrode and which screws onto stud 82 secured to part 83 of the frame. The edge 86 of the nut is calibrated and may be secured by means of a toothed part 85 engaging the milled part 87 of the edge. The crystal and fixed electrode are supported by an insulating block 58 pressed upwards by a spring 47 in the base of the case and sideways movement is prevented by a bow-spring 43 bearing against an insulating strip 45, and a further bow-spring 48. A gasket 92 between the top-plate 11 and the case and a further gasket and cover (Figs. 1 and 2, not shown) seal the container. The frame and electrodes may be made of nickelsilver though the frame may alternatively be made of an insulating material.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US409370A US2319357A (en) | 1941-09-03 | 1941-09-03 | Variable air-gap crystal holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB625533A true GB625533A (en) | 1949-06-29 |
Family
ID=23620184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21774/47A Expired GB625533A (en) | 1941-09-03 | 1947-08-07 | Improvements in piezoelectric crystal apparatus |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2319357A (en) |
| FR (1) | FR948694A (en) |
| GB (1) | GB625533A (en) |
| NL (1) | NL65447C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2427825A (en) * | 1943-11-06 | 1947-09-23 | Rca Corp | Art of mounting piezoelectric crystals |
-
0
- NL NL65447D patent/NL65447C/xx active
-
1941
- 1941-09-03 US US409370A patent/US2319357A/en not_active Expired - Lifetime
-
1947
- 1947-07-01 FR FR948694D patent/FR948694A/en not_active Expired
- 1947-08-07 GB GB21774/47A patent/GB625533A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL65447C (en) | |
| FR948694A (en) | 1949-08-08 |
| US2319357A (en) | 1943-05-18 |
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