GB1473047A - Speaker grilles - Google Patents

Speaker grilles

Info

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
Application number
GB2505975A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NORTHERN ELECTRC COR
Original Assignee
NORTHERN ELECTRC COR
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NORTHERN ELECTRC COR filed Critical NORTHERN ELECTRC COR
Publication of GB1473047A publication Critical patent/GB1473047A/en
Expired legal-status Critical Current

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.
GB2505975A 1974-06-21 1975-06-11 Speaker grilles Expired GB1473047A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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
DK277775A (en) 1975-12-22
NO752097L (en) 1975-12-23
ES213321U (en) 1976-06-16
JPS5113508A (en) 1976-02-03
NL7507377A (en) 1975-12-23
IE41565L (en) 1975-12-21
NL165023B (en) 1980-09-15
BE830491A (en) 1975-10-16
ES213321Y (en) 1976-11-01
SE7507132L (en) 1975-12-22
IT1039191B (en) 1979-12-10
DE2527542A1 (en) 1976-01-08
CA992875A (en) 1976-07-13
IE41565B1 (en) 1980-01-30
FR2275955A1 (en) 1976-01-16

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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