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)

Applications Claiming Priority (1)

Publications (1)

Family

ID=4100464

Family Applications (1)

Country Status (13)

Families Citing this family (4)

• 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/xx unknown
  • 1975-06-19 DK DK277775A patent/DK277775A/da unknown
  • 1975-06-20 DE DE19752527542 patent/DE2527542A1/de not_active Withdrawn
  • 1975-06-20 NL NL7507377.A patent/NL165023B/xx not_active Application Discontinuation
  • 1975-06-20 FR FR7519442A patent/FR2275955A1/fr not_active Withdrawn
  • 1975-06-20 IE IE1384/75A patent/IE41565B1/en unknown
  • 1975-06-20 IT IT24629/75A patent/IT1039191B/it active
  • 1975-06-20 JP JP50074595A patent/JPS5113508A/ja active Pending
  • 1975-06-20 ES ES1975213321U patent/ES213321Y/es not_active Expired
  • 1975-06-20 BE BE157553A patent/BE830491A/xx unknown

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