GB1372939A - Hydraulic system of a tiltable mast industrial lift truck - Google Patents

Hydraulic system of a tiltable mast industrial lift truck

Info

Publication number
GB1372939A
GB1372939A GB246973A GB246973A GB1372939A GB 1372939 A GB1372939 A GB 1372939A GB 246973 A GB246973 A GB 246973A GB 246973 A GB246973 A GB 246973A GB 1372939 A GB1372939 A GB 1372939A
Authority
GB
United Kingdom
Prior art keywords
valve
lift truck
line
hydraulic system
fork
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
GB246973A
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.)
Allis Chalmers Corp
Original Assignee
Allis Chalmers 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 Allis Chalmers Corp filed Critical Allis Chalmers Corp
Publication of GB1372939A publication Critical patent/GB1372939A/en
Expired legal-status Critical Current

Links

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
    • B66F9/22—Hydraulic devices or systems

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)

Abstract

1372939 Fork-lift trucks ALLIS-CHALMERS CORP 17 Jan 1973 [20 Jan 1972] 2469/73 Heading B8H [Also in Division F1] Cavitation is prevented in the mast tilt cylinders 23, Fig. 2, of a fork-lift truck by connecting the exhaust conduit 51 of an auxiliary valve 47 with the supply conduit 43 of the tilt control valve 34 through a line 56 provided with a check-valve 57. As described the auxiliary valve controls a power steering cylinder 46. If back pressure in the exhaust line 58, caused by a filter 52, is insufficient, a restrictor may be provided in the line 58 to increase this pressure. A flow divider 32 provides priority flow to the valve 47.
GB246973A 1972-01-20 1973-01-17 Hydraulic system of a tiltable mast industrial lift truck Expired GB1372939A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21941472A 1972-01-20 1972-01-20

Publications (1)

Publication Number Publication Date
GB1372939A true GB1372939A (en) 1974-11-06

Family

ID=22819177

Family Applications (1)

Application Number Title Priority Date Filing Date
GB246973A Expired GB1372939A (en) 1972-01-20 1973-01-17 Hydraulic system of a tiltable mast industrial lift truck

Country Status (4)

Country Link
US (1) US3722723A (en)
CA (1) CA956205A (en)
FR (1) FR2168512B1 (en)
GB (1) GB1372939A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30291E (en) * 1972-12-15 1980-06-03 Trw Inc. Power steering system with auxiliary power capability
JPH10338491A (en) * 1997-06-10 1998-12-22 Toyota Autom Loom Works Ltd Cargo handling hydraulic device of forklift
DE29802498U1 (en) * 1998-02-13 1998-04-16 Heilmeier & Weinlein Forklift control
DE10053485B4 (en) * 2000-10-27 2005-12-01 Linde Ag Hydraulic drive device for tilting a load-bearing mast element
DE102006023440A1 (en) * 2006-02-16 2007-08-23 Robert Bosch Gmbh Hydrostatic training device
DE102009016431A1 (en) 2009-04-04 2010-10-07 Mahle International Gmbh Hydraulic lifting device and forklift
EP3507422B1 (en) * 2016-08-30 2021-05-26 Clark Equipment Company Power lift
US11459067B2 (en) 2019-12-05 2022-10-04 Sofec, Inc. Systems and processes for recovering a condensate from a conduit

Also Published As

Publication number Publication date
US3722723A (en) 1973-03-27
FR2168512A1 (en) 1973-08-31
FR2168512B1 (en) 1978-06-23
CA956205A (en) 1974-10-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees