JPH026399U - - Google Patents

Info

Publication number
JPH026399U
JPH026399U JP8409388U JP8409388U JPH026399U JP H026399 U JPH026399 U JP H026399U JP 8409388 U JP8409388 U JP 8409388U JP 8409388 U JP8409388 U JP 8409388U JP H026399 U JPH026399 U JP H026399U
Authority
JP
Japan
Prior art keywords
excitation circuit
ultrasonic transducer
ultrasonic
ultrasonic transducers
back side
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.)
Granted
Application number
JP8409388U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0610479Y2 (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 JP8409388U priority Critical patent/JPH0610479Y2/ja
Priority to US07/215,554 priority patent/US4937795A/en
Priority to DE3822916A priority patent/DE3822916A1/de
Publication of JPH026399U publication Critical patent/JPH026399U/ja
Application granted granted Critical
Publication of JPH0610479Y2 publication Critical patent/JPH0610479Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/24—Safety devices, e.g. for preventing overload

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Emergency Alarm Devices (AREA)
  • Alarm Systems (AREA)
JP8409388U 1987-07-06 1988-06-25 警報装置用チョッキ装置 Expired - Lifetime JPH0610479Y2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP8409388U JPH0610479Y2 (ja) 1988-06-25 1988-06-25 警報装置用チョッキ装置
US07/215,554 US4937795A (en) 1987-07-06 1988-07-05 Access alarming method and apparatus for working vehicle
DE3822916A DE3822916A1 (de) 1987-07-06 1988-07-06 Warnverfahren und -vorrichtung fuer ein arbeitsfahrzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8409388U JPH0610479Y2 (ja) 1988-06-25 1988-06-25 警報装置用チョッキ装置

Publications (2)

Publication Number Publication Date
JPH026399U true JPH026399U (enrdf_load_stackoverflow) 1990-01-17
JPH0610479Y2 JPH0610479Y2 (ja) 1994-03-16

Family

ID=31308794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8409388U Expired - Lifetime JPH0610479Y2 (ja) 1987-07-06 1988-06-25 警報装置用チョッキ装置

Country Status (1)

Country Link
JP (1) JPH0610479Y2 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0610479Y2 (ja) 1994-03-16

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