JPS57200823A - Spring balance for measuring small load - Google Patents

Spring balance for measuring small load

Info

Publication number
JPS57200823A
JPS57200823A JP8571381A JP8571381A JPS57200823A JP S57200823 A JPS57200823 A JP S57200823A JP 8571381 A JP8571381 A JP 8571381A JP 8571381 A JP8571381 A JP 8571381A JP S57200823 A JPS57200823 A JP S57200823A
Authority
JP
Japan
Prior art keywords
warning
balance
spring
adjusting screw
specified load
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.)
Pending
Application number
JP8571381A
Other languages
Japanese (ja)
Inventor
Hiroshi Ishimura
Sotoji Hiramoto
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8571381A priority Critical patent/JPS57200823A/en
Publication of JPS57200823A publication Critical patent/JPS57200823A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/08—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a leaf spring

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To notify an operator of the fact that a specified load is applied by providing a waring device, a plate spring, and a contacting and adjusting screw in a conductive holder of the small spring balance, and generating warning by the contact of the plate spring and the adjusting screw. CONSTITUTION:The warning generating device comprising an oscillator 8, a battery 9, and a speaker 10 is provided in the conductive holder 11 of the small spring balance. The plate spring 7 is attached to a holding piece 12, and a circuit is constituted so that the warning is generated by the contact of the contacting and adjusting screw 15. When said balance is hooked on a bonding wire which connects a semiconductor chip and a bonding pat and pulled, the spring 7 and the screw 15 are contacted at the specified load, and the warning is generated. At this time, the state of the wire is confirmed. Therefore the operator is not required to see both the balance scale and the state of the work and notified of the fact that the specified load is applied.
JP8571381A 1981-06-05 1981-06-05 Spring balance for measuring small load Pending JPS57200823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8571381A JPS57200823A (en) 1981-06-05 1981-06-05 Spring balance for measuring small load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8571381A JPS57200823A (en) 1981-06-05 1981-06-05 Spring balance for measuring small load

Publications (1)

Publication Number Publication Date
JPS57200823A true JPS57200823A (en) 1982-12-09

Family

ID=13866464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8571381A Pending JPS57200823A (en) 1981-06-05 1981-06-05 Spring balance for measuring small load

Country Status (1)

Country Link
JP (1) JPS57200823A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007026826A (en) * 2005-07-14 2007-02-01 Toshiba Fuel Cell Power Systems Corp Fuel cell system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007026826A (en) * 2005-07-14 2007-02-01 Toshiba Fuel Cell Power Systems Corp Fuel cell system

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