US3491905A - Apparatus for preventing excessive tension in electrical conductors reeved in uprights - Google Patents

Apparatus for preventing excessive tension in electrical conductors reeved in uprights Download PDF

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Publication number
US3491905A
US3491905A US645368A US3491905DA US3491905A US 3491905 A US3491905 A US 3491905A US 645368 A US645368 A US 645368A US 3491905D A US3491905D A US 3491905DA US 3491905 A US3491905 A US 3491905A
Authority
US
United States
Prior art keywords
conduit
conductor
fluid
reeved
conduits
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 - Lifetime
Application number
US645368A
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English (en)
Inventor
Alberto E Pi
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.)
Doosan Bobcat North America Inc
Original Assignee
Clark Equipment Co
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 Clark Equipment Co filed Critical Clark Equipment Co
Application granted granted Critical
Publication of US3491905A publication Critical patent/US3491905A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/205—Arrangements for transmitting pneumatic, hydraulic or electric power to movable parts or devices

Definitions

  • FIGURE 4 shows in enlarged detail the apparatus and arrangement for reeving the fluid conduits and electrical conductors between the mast and intermediate slide of the upright, and
  • the reference numeral 10 denotes generally a portion of a lift truck which includes a seat 12, a cowl 14, a plurality of control levers 16 mounted on the cowl and a steering control wheel 18 also mounted on the cowl.
  • a flexible fluid conduit 84 is connected at one end thereof to junction block 70 and hence conduit 68, reeved over a dual sheave assembly 85 mounted for rotation on cross arm 52 outwardly of adjacent sprocket 50 and connected to a junction block 86 which is mounted on anchor plate 48.
  • Another flexible fluid conduit 88 is connected at one end thereof to junction block 86 and hence conduit 84 and connected at the other end thereof to a fitting 90 mounted on bracket 82.
  • the loops formed by flexible conduits 92 and 104 are oriented oppositely to each other. This is accomplished by reeving conduit 92 over a dual sheave assembly 112 and reeving conduit 104 under a dual sheave assembly 114.
  • a dual sheave assembly suitable for use here is disclosed and claimed in the aforementioned US. patent application.
  • Sheave assembly 112 is connected for rotation to a bracket 116, and similarly sheave assembly 114 is connected to a bracket 118.
  • Brackets 116 and 118 are connected to a bar 120 which is made up of a pair of parallel plates 122 that are connected by two pairs of spacers 124 and 126.
  • the combination comprising a first member, a second member movable relative to the said first member, a first flexible fluid conduit having a variable cross section and a length which varies inversely relative to the cross section thereof, the said first conduit being looped between and connected to the said members, a second flexible fluid conduit having a variable cross section and a length which varies inversely relative to the cross section, the said second conduit being looped between and connected to the said members, the said conduits shortening when pressurized fluid is supplied to them, a first flexible electrical conductor having a substantially fixed length, the said first conductor being looped between and connected to the said members, a second electrical conductor having a substantially fixed length, the said second conductor being looped between and connected to the said members, means engaging the said conduits and conductors for orienting the loops of the said first conduit and the said first conductor generally oppositely t0 the loops of the said second conduit and the said second conductor, and means for preventing excessive tension being applied to one of the said conduct

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
US645368A 1967-06-12 1967-06-12 Apparatus for preventing excessive tension in electrical conductors reeved in uprights Expired - Lifetime US3491905A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64536867A 1967-06-12 1967-06-12

Publications (1)

Publication Number Publication Date
US3491905A true US3491905A (en) 1970-01-27

Family

ID=24588728

Family Applications (1)

Application Number Title Priority Date Filing Date
US645368A Expired - Lifetime US3491905A (en) 1967-06-12 1967-06-12 Apparatus for preventing excessive tension in electrical conductors reeved in uprights

Country Status (5)

Country Link
US (1) US3491905A (en:Method)
BE (1) BE716238A (en:Method)
DE (1) DE1756527A1 (en:Method)
FR (1) FR1580958A (en:Method)
GB (1) GB1181585A (en:Method)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215622A (en) * 1978-09-22 1980-08-05 Clark Equipment Company Hydraulic control system
GB2164318A (en) * 1984-09-14 1986-03-19 Linde Ag Lifting frame connected to vehicle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54132063A (en) * 1978-04-04 1979-10-13 Nissan Motor Co Ltd Lock-up torque converter
IT8807005V0 (it) * 1988-06-01 1988-06-01 Zubani Bruno Dispositivo di supporto per tubi o cavi destinati a seguire gli spostamenti alternativi di un carrello su un relativoelemento di guida.
US9914626B2 (en) * 2015-11-16 2018-03-13 Zhejiang Dingli Machinery Co., Ltd. Order picker with a wiring mechanism

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1351867A (en) * 1919-01-09 1920-09-07 Oliver E Oakes Compensating apparatus for well-digging outfits
US2800236A (en) * 1953-06-30 1957-07-23 Baker Raulang Co Self-unloading industrial truck
US2979162A (en) * 1957-01-28 1961-04-11 Yale & Towne Mfg Co Upright assembly for industrial trucks
US3305220A (en) * 1965-10-11 1967-02-21 Ohio Brass Co Take-up device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1351867A (en) * 1919-01-09 1920-09-07 Oliver E Oakes Compensating apparatus for well-digging outfits
US2800236A (en) * 1953-06-30 1957-07-23 Baker Raulang Co Self-unloading industrial truck
US2979162A (en) * 1957-01-28 1961-04-11 Yale & Towne Mfg Co Upright assembly for industrial trucks
US3305220A (en) * 1965-10-11 1967-02-21 Ohio Brass Co Take-up device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215622A (en) * 1978-09-22 1980-08-05 Clark Equipment Company Hydraulic control system
GB2164318A (en) * 1984-09-14 1986-03-19 Linde Ag Lifting frame connected to vehicle

Also Published As

Publication number Publication date
DE1756527A1 (de) 1971-09-02
BE716238A (en:Method) 1968-11-04
GB1181585A (en) 1970-02-18
FR1580958A (en:Method) 1969-09-12

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