SE9200484D0 - HYDRAULIC OPERATED WORKING TOOL - Google Patents

HYDRAULIC OPERATED WORKING TOOL

Info

Publication number
SE9200484D0
SE9200484D0 SE9200484A SE9200484A SE9200484D0 SE 9200484 D0 SE9200484 D0 SE 9200484D0 SE 9200484 A SE9200484 A SE 9200484A SE 9200484 A SE9200484 A SE 9200484A SE 9200484 D0 SE9200484 D0 SE 9200484D0
Authority
SE
Sweden
Prior art keywords
piston
channel
working
cylinder device
towards
Prior art date
Application number
SE9200484A
Other languages
Swedish (sv)
Other versions
SE9200484L (en
Inventor
Jerzy Janczak
Original Assignee
Jerzy Janczak
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 Jerzy Janczak filed Critical Jerzy Janczak
Priority to SE9200484A priority Critical patent/SE9200484L/en
Publication of SE9200484D0 publication Critical patent/SE9200484D0/en
Priority to PCT/SE1993/000105 priority patent/WO1993015886A1/en
Priority to AU35798/93A priority patent/AU3579893A/en
Publication of SE9200484L publication Critical patent/SE9200484L/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L7/00—Arrangements for splitting wood

Abstract

A hydraulically operated tool comprises two working members which are intended to be moved towards one another during a working stroke so as to work a workpiece located therebetween. At least one of the working members is driven by a piston-cylinder device. The tool may have the form of a wood splitter comprising a fixed splitting wedge (2) and a pressure plate (4) which is driven by a piston-cylinder device (6, 7) such as to feed wood pieces (3) towards the wedge. Hydraulic fluid under pressure is delivered to the piston-cylinder device (6, 7) via an adjustable valve (10) prior to each working stroke, such as to move an associated working member (4) towards the other member (2). A return spring (23) is provided for returning the working member when the hydraulic pressure is lowered. The piston (7) is provided with a normally closed channel (25) between the high pressure and the low pressure sides of the channel, and also with means for opening the channel as the piston approaches its end position in the cylinder. This means has the form of a mechanical actuator which functions to move an element which will normally close the channel when coming into contact with a part of the cylinder housing.
SE9200484A 1992-02-18 1992-02-18 Hydraulic power tool SE9200484L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9200484A SE9200484L (en) 1992-02-18 1992-02-18 Hydraulic power tool
PCT/SE1993/000105 WO1993015886A1 (en) 1992-02-18 1993-02-11 Hydraulically operated tool
AU35798/93A AU3579893A (en) 1992-02-18 1993-02-11 Hydraulically operated tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9200484A SE9200484L (en) 1992-02-18 1992-02-18 Hydraulic power tool

Publications (2)

Publication Number Publication Date
SE9200484D0 true SE9200484D0 (en) 1992-02-18
SE9200484L SE9200484L (en) 1993-08-19

Family

ID=20385358

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9200484A SE9200484L (en) 1992-02-18 1992-02-18 Hydraulic power tool

Country Status (3)

Country Link
AU (1) AU3579893A (en)
SE (1) SE9200484L (en)
WO (1) WO1993015886A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0718078B1 (en) * 1994-12-22 2000-03-22 Clarke Power Products, Inc. Hydraulic circuit for a hydraulic log splitter
AT403446B (en) * 1996-08-06 1998-02-25 Stuerzenbecher Manfred Apparatus for splitting vertical and horizontal tree trunks
IT1319478B1 (en) * 2000-12-05 2003-10-10 Bell Srl HYDRAULIC GROUP WITH AUTOMATIC REGENERATIVE SYSTEM TYPICALLY FOR WOOD SPLITTERS OPERATED BY A SINGLE-ACTING JACK
SI25544A (en) * 2017-11-10 2019-05-31 Tajfun Planina Proizvodnja Strojev, D.O.O. Wood splitter with improved hydraulic cylinder action

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2948263A (en) * 1958-05-19 1960-08-09 Gen Motors Corp Propeller torque unit construction
US3077214A (en) * 1959-08-27 1963-02-12 Waco Aircraft Co Log splitter
US3182563A (en) * 1963-08-19 1965-05-11 Thompson Ramo Wooldridge Inc Hydraulic cylinder piston
US3476015A (en) * 1968-02-13 1969-11-04 Edward L Ackley Valved,fluid-operated actuator assembly
US4331192A (en) * 1979-10-31 1982-05-25 Michael Hung Horizontal hydraulic wood splitter
US4337687A (en) * 1980-05-23 1982-07-06 Prince Manufacturing Corporation Poppet trip device for hydraulic cylinders
IT1141897B (en) * 1980-11-10 1986-10-08 Marigonda Gabriella HYDRAULIC JACK SPLITTER OPERATED BY THE MOTOR OF A PORTABLE CHAINSAW

Also Published As

Publication number Publication date
WO1993015886A1 (en) 1993-08-19
AU3579893A (en) 1993-09-03
SE9200484L (en) 1993-08-19

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