JPS5241342A - Winch - Google Patents

Winch

Info

Publication number
JPS5241342A
JPS5241342A JP11557775A JP11557775A JPS5241342A JP S5241342 A JPS5241342 A JP S5241342A JP 11557775 A JP11557775 A JP 11557775A JP 11557775 A JP11557775 A JP 11557775A JP S5241342 A JPS5241342 A JP S5241342A
Authority
JP
Japan
Prior art keywords
winch
upper limit
overwinding
averted
potentiometer
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
JP11557775A
Other languages
Japanese (ja)
Inventor
Koji Yamauchi
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 JP11557775A priority Critical patent/JPS5241342A/en
Publication of JPS5241342A publication Critical patent/JPS5241342A/en
Pending legal-status Critical Current

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  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE: To provide a winch with speed control circuit, comprising a speed commanding potentiometer, upper limit switch and current differential type operational amplifier, in which winding of winch beyond an upper limit is averted, thus protecting the winch from damages due to overwinding.
COPYRIGHT: (C)1977,JPO&Japio
JP11557775A 1975-09-26 1975-09-26 Winch Pending JPS5241342A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11557775A JPS5241342A (en) 1975-09-26 1975-09-26 Winch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11557775A JPS5241342A (en) 1975-09-26 1975-09-26 Winch

Publications (1)

Publication Number Publication Date
JPS5241342A true JPS5241342A (en) 1977-03-30

Family

ID=14666010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11557775A Pending JPS5241342A (en) 1975-09-26 1975-09-26 Winch

Country Status (1)

Country Link
JP (1) JPS5241342A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0275491U (en) * 1988-11-30 1990-06-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0275491U (en) * 1988-11-30 1990-06-08

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