GB1473047A - Speaker grilles - Google Patents
Speaker grillesInfo
- Publication number
- GB1473047A GB1473047A GB2505975A GB2505975A GB1473047A GB 1473047 A GB1473047 A GB 1473047A GB 2505975 A GB2505975 A GB 2505975A GB 2505975 A GB2505975 A GB 2505975A GB 1473047 A GB1473047 A GB 1473047A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ribs
- speaker
- grille
- june
- mask
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/023—Screens for loudspeakers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
- B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Telephone Set Structure (AREA)
Abstract
1473047 Speaker grilles; radio constructions NORTHERN ELECTRIC CO Ltd 11 June 1975 [21 June 1974] 25059/75 Headings H4J and H3Q A speaker grille comprises a plurality of parallel ribs 12 in a cover 10 of a housing (not shown) and a mask 17 secured to the ribs 12 (e.g. by sonic welding to smaller ribs 32) on an inner surface of the cover. An aperture (see Fig. 5, not shown) in the mask 17 is at a position to correspond with a speaker position. The ribs 12 each have a cross-section, normal to the longitudinal axis of the rib, substantially in the form of a Z and include upper and lower cross-bars 21, 22 (Fig. 4) connected by a web 23. The ribs are separated by sinuous channels 24, 25 extending completely through the grille. The outer and inner portions 24, 25 are offset relative to each other to substantially prevent direct view between the ribs 12 in a direction normal to the outer surface of the grille. As described the grille is applied to a telephone set including a speaker and microphone. It can also be applied in radio sets and in other forms of communication apparatus.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA203,106A CA992875A (en) | 1974-06-21 | 1974-06-21 | Speaker grills |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1473047A true GB1473047A (en) | 1977-05-11 |
Family
ID=4100464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2505975A Expired GB1473047A (en) | 1974-06-21 | 1975-06-11 | Speaker grilles |
Country Status (13)
Country | Link |
---|---|
JP (1) | JPS5113508A (en) |
BE (1) | BE830491A (en) |
CA (1) | CA992875A (en) |
DE (1) | DE2527542A1 (en) |
DK (1) | DK277775A (en) |
ES (1) | ES213321Y (en) |
FR (1) | FR2275955A1 (en) |
GB (1) | GB1473047A (en) |
IE (1) | IE41565B1 (en) |
IT (1) | IT1039191B (en) |
NL (1) | NL165023B (en) |
NO (1) | NO752097L (en) |
SE (1) | SE7507132L (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111328002A (en) * | 2018-12-17 | 2020-06-23 | 海湾安全技术有限公司 | Alarm and sound device |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5699127A (en) * | 1979-12-29 | 1981-08-10 | Electroplating Eng Of Japan Co | Automatic plating device |
DE9113951U1 (en) * | 1991-11-09 | 1992-01-02 | Metalpraecis Berchem + Schaberg Gesellschaft für Metallformgebung mbH, 4650 Gelsenkirchen | Shut-off device for installation in a pipeline carrying a hot flowing medium |
JP2010114806A (en) * | 2008-11-10 | 2010-05-20 | Toppan Printing Co Ltd | Speaker grill and manufacturing method thereof, and speaker with which the speaker grill is additionally provided |
-
1974
- 1974-06-21 CA CA203,106A patent/CA992875A/en not_active Expired
-
1975
- 1975-06-11 GB GB2505975A patent/GB1473047A/en not_active Expired
- 1975-06-12 NO NO752097A patent/NO752097L/no unknown
- 1975-06-19 SE SE7507132A patent/SE7507132L/en unknown
- 1975-06-19 DK DK277775A patent/DK277775A/en unknown
- 1975-06-20 ES ES1975213321U patent/ES213321Y/en not_active Expired
- 1975-06-20 IE IE1384/75A patent/IE41565B1/en unknown
- 1975-06-20 IT IT24629/75A patent/IT1039191B/en active
- 1975-06-20 FR FR7519442A patent/FR2275955A1/en not_active Withdrawn
- 1975-06-20 JP JP50074595A patent/JPS5113508A/ja active Pending
- 1975-06-20 DE DE19752527542 patent/DE2527542A1/en not_active Withdrawn
- 1975-06-20 BE BE157553A patent/BE830491A/en unknown
- 1975-06-20 NL NL7507377.A patent/NL165023B/en not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111328002A (en) * | 2018-12-17 | 2020-06-23 | 海湾安全技术有限公司 | Alarm and sound device |
CN111328002B (en) * | 2018-12-17 | 2024-06-11 | 海湾安全技术有限公司 | Alarm and sound device |
Also Published As
Publication number | Publication date |
---|---|
ES213321U (en) | 1976-06-16 |
ES213321Y (en) | 1976-11-01 |
DK277775A (en) | 1975-12-22 |
IE41565L (en) | 1975-12-21 |
CA992875A (en) | 1976-07-13 |
BE830491A (en) | 1975-10-16 |
FR2275955A1 (en) | 1976-01-16 |
JPS5113508A (en) | 1976-02-03 |
NO752097L (en) | 1975-12-23 |
IE41565B1 (en) | 1980-01-30 |
NL7507377A (en) | 1975-12-23 |
DE2527542A1 (en) | 1976-01-08 |
NL165023B (en) | 1980-09-15 |
IT1039191B (en) | 1979-12-10 |
SE7507132L (en) | 1975-12-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |