GB1295052A - - Google Patents
Info
- Publication number
- GB1295052A GB1295052A GB727069A GB1295052DA GB1295052A GB 1295052 A GB1295052 A GB 1295052A GB 727069 A GB727069 A GB 727069A GB 1295052D A GB1295052D A GB 1295052DA GB 1295052 A GB1295052 A GB 1295052A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- casing
- generator
- contact
- extending
- 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
- G10K9/15—Self-interrupting arrangements
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Basic Packing Technique (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Electromagnets (AREA)
- Percussion Or Vibration Massage (AREA)
- Electromechanical Clocks (AREA)
Abstract
1295052 Sound generators JOSEPH LUCAS INDUSTRIES Ltd 28 Jan 1970 [11 Feb 1969] 7270/69 Heading G5J An electrically operated sound generator, including a movable contact motivated by an electromagnet, has a fixed contact 24 attached to an L-shaped copper strip, one arm 25b of the strip extending through the casing and forming a terminal, the other arm 25a extending through a slot 26 in the casing. Thus, the arm 25a can be bent, after assembly of the generator, to alter the distance by which the contact 24 is spaced from the electromagnet pole 17 and hence after the tuning of the sound generator.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB727069 | 1969-02-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1295052A true GB1295052A (en) | 1972-11-01 |
Family
ID=9829893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB727069A Expired GB1295052A (en) | 1969-02-11 | 1969-02-11 |
Country Status (6)
Country | Link |
---|---|
US (1) | US3631480A (en) |
AU (1) | AU1108470A (en) |
DE (1) | DE2005599A1 (en) |
ES (1) | ES156006Y (en) |
FR (1) | FR2032716A5 (en) |
GB (1) | GB1295052A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1298675A (en) * | 1969-06-11 | 1972-12-06 | Lucas Industries Ltd | Electromagnetic horns |
US3938143A (en) * | 1971-10-22 | 1976-02-10 | Stewart-Warner Corporation | Buzzer |
US3774200A (en) * | 1972-11-10 | 1973-11-20 | Gen Motors Corp | Buzzer including coil with wound connections |
US3864823A (en) * | 1974-01-08 | 1975-02-11 | Gen Signal Corp | Method of making a buzzer structure |
US4005413A (en) * | 1974-01-08 | 1977-01-25 | General Signal Corporation | Buzzer construction and method of adjusting the same |
US4075627A (en) * | 1977-02-02 | 1978-02-21 | Pittway Corporation | Electric horn |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB767059A (en) * | 1954-11-18 | 1957-01-30 | Trix Ltd | Improvements in or connected with magnetic sound generators |
-
1969
- 1969-02-11 GB GB727069A patent/GB1295052A/en not_active Expired
-
1970
- 1970-02-02 US US7799A patent/US3631480A/en not_active Expired - Lifetime
- 1970-02-03 ES ES1970156006U patent/ES156006Y/en not_active Expired
- 1970-02-04 FR FR7003812A patent/FR2032716A5/fr not_active Expired
- 1970-02-05 AU AU11084/70A patent/AU1108470A/en not_active Expired
- 1970-02-07 DE DE19702005599 patent/DE2005599A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
ES156006U (en) | 1970-04-16 |
US3631480A (en) | 1971-12-28 |
FR2032716A5 (en) | 1970-11-27 |
DE2005599A1 (en) | 1970-09-03 |
ES156006Y (en) | 1971-01-01 |
AU1108470A (en) | 1971-08-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |