JPS643267Y2 - - Google Patents

Info

Publication number
JPS643267Y2
JPS643267Y2 JP1982042179U JP4217982U JPS643267Y2 JP S643267 Y2 JPS643267 Y2 JP S643267Y2 JP 1982042179 U JP1982042179 U JP 1982042179U JP 4217982 U JP4217982 U JP 4217982U JP S643267 Y2 JPS643267 Y2 JP S643267Y2
Authority
JP
Japan
Prior art keywords
helmet
speaker
wearer
present
cushioning material
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
JP1982042179U
Other languages
English (en)
Japanese (ja)
Other versions
JPS58144984U (ja
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 filed Critical
Priority to JP4217982U priority Critical patent/JPS58144984U/ja
Priority to US06/477,926 priority patent/US4517417A/en
Publication of JPS58144984U publication Critical patent/JPS58144984U/ja
Application granted granted Critical
Publication of JPS643267Y2 publication Critical patent/JPS643267Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Helmets And Other Head Coverings (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
JP4217982U 1982-03-25 1982-03-25 ヘルメツト用スピ−カ Granted JPS58144984U (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP4217982U JPS58144984U (ja) 1982-03-25 1982-03-25 ヘルメツト用スピ−カ
US06/477,926 US4517417A (en) 1982-03-25 1983-03-23 Communication system for a motor vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4217982U JPS58144984U (ja) 1982-03-25 1982-03-25 ヘルメツト用スピ−カ

Publications (2)

Publication Number Publication Date
JPS58144984U JPS58144984U (ja) 1983-09-29
JPS643267Y2 true JPS643267Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1989-01-27

Family

ID=30053319

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4217982U Granted JPS58144984U (ja) 1982-03-25 1982-03-25 ヘルメツト用スピ−カ

Country Status (1)

Country Link
JP (1) JPS58144984U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6127262Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1981-04-02 1986-08-14

Also Published As

Publication number Publication date
JPS58144984U (ja) 1983-09-29

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