GB2349035B - Hands-free megaphone - Google Patents

Hands-free megaphone

Info

Publication number
GB2349035B
GB2349035B GB0006887A GB0006887A GB2349035B GB 2349035 B GB2349035 B GB 2349035B GB 0006887 A GB0006887 A GB 0006887A GB 0006887 A GB0006887 A GB 0006887A GB 2349035 B GB2349035 B GB 2349035B
Authority
GB
United Kingdom
Prior art keywords
megaphone
hands
free
free megaphone
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 - Fee Related
Application number
GB0006887A
Other versions
GB2349035A (en
GB0006887D0 (en
Inventor
Robert Leonard Carpenter
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB0006887D0 publication Critical patent/GB0006887D0/en
Publication of GB2349035A publication Critical patent/GB2349035A/en
Application granted granted Critical
Publication of GB2349035B publication Critical patent/GB2349035B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
GB0006887A 1999-04-14 2000-03-23 Hands-free megaphone Expired - Fee Related GB2349035B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9908380.0A GB9908380D0 (en) 1999-04-14 1999-04-14 Rob Carpenter's voice thrower

Publications (3)

Publication Number Publication Date
GB0006887D0 GB0006887D0 (en) 2000-05-10
GB2349035A GB2349035A (en) 2000-10-18
GB2349035B true GB2349035B (en) 2003-12-10

Family

ID=10851418

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9908380.0A Ceased GB9908380D0 (en) 1999-04-14 1999-04-14 Rob Carpenter's voice thrower
GB0006887A Expired - Fee Related GB2349035B (en) 1999-04-14 2000-03-23 Hands-free megaphone

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9908380.0A Ceased GB9908380D0 (en) 1999-04-14 1999-04-14 Rob Carpenter's voice thrower

Country Status (1)

Country Link
GB (2) GB9908380D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6940984B2 (en) * 2001-05-22 2005-09-06 Robert Leonard Carpenter Hands-free megaphone
AU770159B2 (en) * 2001-10-23 2004-02-12 Robert Leonard Carpenter Hands-free megaphone

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237341A (en) * 1978-09-25 1980-12-02 Richards Paul E Portable self-contained amplifier and loudspeaker apparatus
GB2081550A (en) * 1980-07-16 1982-02-17 Gentex Corp Microphone arrangement for face masks
JPS59140800A (en) * 1983-01-31 1984-08-13 Hiroyuki Ito Portable loudspeaker
FR2543392A1 (en) * 1983-03-15 1984-09-28 Pain Genevieve On-belt amplifier
US5463693A (en) * 1993-11-10 1995-10-31 Audiopack Sound Systems Inc. Voice amplification adapter assembly for face mask
JPH08237799A (en) * 1995-02-28 1996-09-13 O G Syst:Kk Portable loudspeaker
US6015160A (en) * 1997-05-02 2000-01-18 Spector; Donald Combined safety helmet and PA system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237341A (en) * 1978-09-25 1980-12-02 Richards Paul E Portable self-contained amplifier and loudspeaker apparatus
GB2081550A (en) * 1980-07-16 1982-02-17 Gentex Corp Microphone arrangement for face masks
JPS59140800A (en) * 1983-01-31 1984-08-13 Hiroyuki Ito Portable loudspeaker
FR2543392A1 (en) * 1983-03-15 1984-09-28 Pain Genevieve On-belt amplifier
US5463693A (en) * 1993-11-10 1995-10-31 Audiopack Sound Systems Inc. Voice amplification adapter assembly for face mask
JPH08237799A (en) * 1995-02-28 1996-09-13 O G Syst:Kk Portable loudspeaker
US6015160A (en) * 1997-05-02 2000-01-18 Spector; Donald Combined safety helmet and PA system

Also Published As

Publication number Publication date
GB2349035A (en) 2000-10-18
GB9908380D0 (en) 1999-06-09
GB0006887D0 (en) 2000-05-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20130323