JPS55136393A - Automatic controller for descent of excavating tool of excavator - Google Patents

Automatic controller for descent of excavating tool of excavator

Info

Publication number
JPS55136393A
JPS55136393A JP4304279A JP4304279A JPS55136393A JP S55136393 A JPS55136393 A JP S55136393A JP 4304279 A JP4304279 A JP 4304279A JP 4304279 A JP4304279 A JP 4304279A JP S55136393 A JPS55136393 A JP S55136393A
Authority
JP
Japan
Prior art keywords
excavator
descent
automatic controller
excavating tool
excavating
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
JP4304279A
Other languages
Japanese (ja)
Inventor
Akinori Ikeda
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 Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co 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 Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP4304279A priority Critical patent/JPS55136393A/en
Publication of JPS55136393A publication Critical patent/JPS55136393A/en
Pending legal-status Critical Current

Links

JP4304279A 1979-04-11 1979-04-11 Automatic controller for descent of excavating tool of excavator Pending JPS55136393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4304279A JPS55136393A (en) 1979-04-11 1979-04-11 Automatic controller for descent of excavating tool of excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4304279A JPS55136393A (en) 1979-04-11 1979-04-11 Automatic controller for descent of excavating tool of excavator

Publications (1)

Publication Number Publication Date
JPS55136393A true JPS55136393A (en) 1980-10-24

Family

ID=12652842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4304279A Pending JPS55136393A (en) 1979-04-11 1979-04-11 Automatic controller for descent of excavating tool of excavator

Country Status (1)

Country Link
JP (1) JPS55136393A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6462591A (en) * 1987-08-31 1989-03-09 Sumitomo Shi Constr Mach Co Lt Penetrating input controller for excavator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4850901A (en) * 1971-10-22 1973-07-18
JPS512042A (en) * 1974-06-21 1976-01-09 Kogyo Gijutsuin
JPS5326402U (en) * 1976-08-13 1978-03-06

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4850901A (en) * 1971-10-22 1973-07-18
JPS512042A (en) * 1974-06-21 1976-01-09 Kogyo Gijutsuin
JPS5326402U (en) * 1976-08-13 1978-03-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6462591A (en) * 1987-08-31 1989-03-09 Sumitomo Shi Constr Mach Co Lt Penetrating input controller for excavator

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