CA978444A - Hydraulic cylinder for telescopic boom - Google Patents

Hydraulic cylinder for telescopic boom

Info

Publication number
CA978444A
CA978444A CA179,976A CA179976A CA978444A CA 978444 A CA978444 A CA 978444A CA 179976 A CA179976 A CA 179976A CA 978444 A CA978444 A CA 978444A
Authority
CA
Canada
Prior art keywords
hydraulic cylinder
telescopic boom
boom
telescopic
hydraulic
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
CA179,976A
Other versions
CA179976S (en
Inventor
Roger L. Johnston
Daniel C. Wiencek
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.)
Harnischfeger Corp
Original Assignee
Harnischfeger Corp
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 Harnischfeger Corp filed Critical Harnischfeger Corp
Priority to CA226,153A priority Critical patent/CA980299A/en
Application granted granted Critical
Publication of CA978444A publication Critical patent/CA978444A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Jib Cranes (AREA)
  • Servomotors (AREA)
CA179,976A 1972-09-18 1973-08-30 Hydraulic cylinder for telescopic boom Expired CA978444A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA226,153A CA980299A (en) 1972-09-18 1975-05-02 Hydraulic cylinder for telescopic boom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28998772A 1972-09-18 1972-09-18

Publications (1)

Publication Number Publication Date
CA978444A true CA978444A (en) 1975-11-25

Family

ID=23114043

Family Applications (1)

Application Number Title Priority Date Filing Date
CA179,976A Expired CA978444A (en) 1972-09-18 1973-08-30 Hydraulic cylinder for telescopic boom

Country Status (7)

Country Link
US (1) US3777629A (en)
JP (1) JPS5519878B2 (en)
BR (1) BR7307121D0 (en)
CA (1) CA978444A (en)
DE (1) DE2346005A1 (en)
FR (1) FR2200185B1 (en)
GB (1) GB1405385A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094230A (en) * 1974-10-03 1978-06-13 Walter Kidde & Company, Inc. Self-aligning and end fixity connector for connecting a hydraulic cylinder piston rod to its respective section in a multi-section telescopic boom assembly
US4098172A (en) * 1975-11-12 1978-07-04 Walter Kidde & Company, Inc. Hydraulic cylinder rod end fixity connector for telescopic crane booms
US4125974A (en) * 1977-07-08 1978-11-21 Harnischfeger Corporation Control system for telescopic boom
US4238911A (en) * 1978-09-29 1980-12-16 Frosch Robert A Telescoping columns
US4498370A (en) * 1982-02-22 1985-02-12 Vickers, Incorporated Power transmission
CH675762A5 (en) * 1988-10-03 1990-10-31 Peter Huerlimann
GB9326347D0 (en) * 1993-12-23 1994-02-23 Grove Europ Limited Improvements in and relating to telescopic booms
US5927520A (en) * 1995-10-06 1999-07-27 Kidde Industries, Inc. Electro-hydraulic operating system for extensible boom crane
DE19613700A1 (en) * 1996-03-29 1997-10-02 M E P Gmbh Ges Fuer Consulting Telescopically interlocking machine part, e.g. for excavator or crane
US6128900A (en) * 1998-01-28 2000-10-10 Case Corporation Hydraulic fluid supply system
JP2001300883A (en) * 2000-04-20 2001-10-30 Kawasaki Heavy Ind Ltd Robot
ITMO20120312A1 (en) * 2012-12-20 2014-06-20 Cnh Italia Spa TELESCOPIC ARM.
JP6223071B2 (en) * 2013-08-30 2017-11-01 株式会社タダノ Boom telescopic mechanism of crane equipment
CZ306806B6 (en) * 2016-09-20 2017-07-12 BORCAD Medical a.s. A medical device with a telescopic support column
US10889473B2 (en) * 2016-12-09 2021-01-12 Fassi Gru S.P.A. Load crane main boom
IT201800004537A1 (en) * 2018-04-16 2019-10-16 AERIAL PLATFORM

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2643515A (en) * 1950-10-17 1953-06-30 Chester A Harsch Electric control system for expansible motor operated boom
FR1090156A (en) * 1952-10-03 1955-03-28 Bendix Aviat Corp Advanced valve for servo-motor devices
US2984985A (en) * 1959-02-16 1961-05-23 Macmillin Hydraulic Engineerin Hydraulic operating and control system
US2976852A (en) * 1959-09-21 1961-03-28 Modernair Corp Valve-in-head pneumatic cylinder
US3359868A (en) * 1965-04-08 1967-12-26 Benton Harbor Engineering Work Hydraulic cylinder assembly
US3610433A (en) * 1970-05-07 1971-10-05 Baker Equipment Eng Co Hydraulically operable extendable boom
US3666125A (en) * 1970-09-10 1972-05-30 Warner Swasey Co Boom assembly

Also Published As

Publication number Publication date
JPS5519878B2 (en) 1980-05-29
DE2346005A1 (en) 1974-03-28
US3777629A (en) 1973-12-11
GB1405385A (en) 1975-09-10
FR2200185A1 (en) 1974-04-19
JPS4970360A (en) 1974-07-08
FR2200185B1 (en) 1976-11-19
BR7307121D0 (en) 1974-07-11

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