EP1502718B1 - Device for cutting branches and the like - Google Patents

Device for cutting branches and the like Download PDF

Info

Publication number
EP1502718B1
EP1502718B1 EP04102989A EP04102989A EP1502718B1 EP 1502718 B1 EP1502718 B1 EP 1502718B1 EP 04102989 A EP04102989 A EP 04102989A EP 04102989 A EP04102989 A EP 04102989A EP 1502718 B1 EP1502718 B1 EP 1502718B1
Authority
EP
European Patent Office
Prior art keywords
cutting
guide
recess
dragging
cutting tool
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
EP04102989A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1502718A3 (en
EP1502718A2 (en
Inventor
Remo Francesco Cecchi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1502718A2 publication Critical patent/EP1502718A2/en
Publication of EP1502718A3 publication Critical patent/EP1502718A3/en
Application granted granted Critical
Publication of EP1502718B1 publication Critical patent/EP1502718B1/en
Priority to CY20071101389T priority Critical patent/CY1106960T1/el
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/0083—Attachments for guiding or supporting chain saws during operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/02—Chain saws equipped with guide bar

Definitions

  • the present invention relates to a device for cutting branches and the like according to the preamble of claim 1.
  • a device is known from US 4654972 .
  • Devices for cutting branches and the like ⁇ often used for pruning ⁇ based on a chain-type annular cutting device are known in the art. Such devices comprise a track for guiding the cutting chain, said track typically having an ellipsoidal development, and a motor for producing a translatory motion of the chain itself along said track.
  • Devices for cutting branches comprising a resting means resting on the piece to be cut are known from US 2572405 .
  • a device for cutting branches and the like not according to the invention is generally indicated by 1.
  • the device 1 is an electric saw for the cutting of trees and the like.
  • the device 1 comprises a substantially flexible elongate cutting tool 2, having an annular development, which in the present embodiment is a conventional cutting chain.
  • the device 1 comprises a guide 3 shaped according to closed-path, cooperating with the chain 2 in order to guide the cutting motion of the latter.
  • the sense of the cutting motion of the chain 2 onto the guide 3 is indicated by arrows in Figure 6.
  • the guide 3 is an annular track, it also indicated by 3, developing along an elongate path and onto which the chain 2 extends.
  • the track 3 is obtained at a peripheral edge 4 of a substantially flat guide body 5.
  • the track 3 has, at a bottom portion thereof, a recess 6 having a substantially loop-shaped contour, and in particular a substantially sinuous contour, having rounded corners.
  • the device 1 also comprises means 12, schematically depicted in Figure 1, for tensioning the chain 2 onto the track 3.
  • Said means 12 is of a conventional type, and therefore will not be described in further detail.
  • the device 1 comprises means for dragging the chain 2, said means being housed within the guide body 5.
  • the means for dragging is in form of a first and a second sprocket, 7 and 8, respectively, each mounted on a respective bearing, e.g. a needle bearing.
  • the first sprocket 7 is arranged at a rear mouth of the recess 6, and precisely downstream of the latter with respect to the sense of the cutting motion of the chain 2 onto the track 3. Such an arrangement fosters an effective dragging of the chain 2, as it will be detailed hereinafter.
  • the second sprocket 8 is instead arranged at the foremost portion of the guide body 5.
  • the device 1 further comprises means for driving the chain 2, apt to slide the latter along the track 3, so as to give it a substantially translatory cutting motion.
  • the means for driving comprises an electric motor 9 that drives the chain 2 by interposition of conventional transmission means.
  • the motor 9 is powered by means of a battery, e.g. of a rechargeable type.
  • a battery e.g. of a rechargeable type.
  • the latter may easily be housed within a bag or pouch M carried or worn-on by the operator, as it is shown in Figure 3.
  • the motor 9 can be operated by means of a pushbutton or of an equivalent conventional system.
  • the device could provide powering means different from that of the hereto-considered embodiment, e.g., an explosion engine.
  • the former is more suitable in case the device of the invention consists of an electric saw or the like.
  • the device 1 also comprises a protecting cover 11 for covering the chain 2 when the device itself is not in operation; for simplicity's sake, said protection has been depicted solely in Figure 2.
  • the cover 11 consists of a sleeve opened lengthwise to receive the chain 2.
  • a sleeve 11 is rotatably connected, and in particular hinged, onto the chassis of the device 1. Thus, it does not require a separate carrying and can easily be inserted on and taken out of the chain 2.
  • the device 1 comprises a system for lubricating the chain 2 and a side means 13 resting on the piece to be cut, commonly called 'lug', of a conventional type and therefore not described in further detail.
  • the cutting of the piece is performed by an effective portion 20 of the chain 2 (enclosed within a dashed line in Figure 2) into contact with the piece itself.
  • Such effective portion 20 extends at the recess 6 of the track 3, and therefore it is not into contact with the latter.
  • the effective portion 20 is substantially spaced apart from said track 3, exhibiting a maximal distance therefrom that is indicated by a reference height 203.
  • the fact that the effective portion 20 of the chain 2 is not into contact with the guide 3 does not penalize the efficiency and the effectiveness of the cutting, also by virtue of the arrangement of the dragging sprocket 7 immediately downstream of the recess 6.
  • the cutting action could determine a slight bending of the effective portion 20 of the chain toward the track 3, without however determining, by virtue of said substantial distance 203, a contact between the two components.
  • such bending of the portion 20 of the chain toward the wall of the recess 6 induces a moving away from the track 3 of a portion 21 of the chain opposite to the effective portion 20.
  • this further reduces the overall friction between slideway 3 and chain 2.
  • the device for cutting comprises a side means 130 resting on the piece to be cut, which is different from the side means 13 of the first embodiment described with reference to the preceding figures.
  • the means 130 comprises a substantially vertical smooth chute-like edge 132 and a sprocket 131 arranged therebelow.
  • the sprocket 131 rotates idle, e.g. above a needle bearing, and it is equipped with teeth apt to engage the piece to be cut, and in particular apt to break into the branch bark.
  • the idle sprocket 131 by inserting the rotating teeth in the branch bark, annuls vibrations and side shifting of the cutting device, moreover easing the descent of the cutting chain into the cut jointly with the smooth bank 132 completing the detachment of the branch.
  • the smooth edge 132 may also be replaced by plural idle sprockets aligned thereamong.
  • sprocket or sprockets 131 may be replaced by any other suitable rotating element.
  • kit comprising the device 1, the means 9 for driving, the battery and the bag or pouch M schematically shown in Figure 3 may be provided.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Turning (AREA)
  • Dicing (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Shearing Machines (AREA)
EP04102989A 2003-07-30 2004-06-28 Device for cutting branches and the like Expired - Lifetime EP1502718B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CY20071101389T CY1106960T1 (el) 2003-07-30 2007-10-29 Συσκευη για την κοπη κλαδιων και αλλων ομοιων στοιχειων

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM20030374 2003-07-30
IT000374A ITRM20030374A1 (it) 2003-07-30 2003-07-30 Dispositivo di taglio per rami e simili.

Publications (3)

Publication Number Publication Date
EP1502718A2 EP1502718A2 (en) 2005-02-02
EP1502718A3 EP1502718A3 (en) 2005-04-13
EP1502718B1 true EP1502718B1 (en) 2007-08-08

Family

ID=29765942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04102989A Expired - Lifetime EP1502718B1 (en) 2003-07-30 2004-06-28 Device for cutting branches and the like

Country Status (7)

Country Link
EP (1) EP1502718B1 (it)
AT (1) ATE369237T1 (it)
CY (1) CY1106960T1 (it)
DE (1) DE602004007990D1 (it)
ES (1) ES2290627T3 (it)
IT (1) ITRM20030374A1 (it)
PT (1) PT1502718E (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013522090A (ja) * 2010-03-23 2013-06-13 ブライアン ジェイ ルース チェーンソー彫刻用ガイドバー

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2925384B1 (fr) * 2007-12-20 2011-11-18 Pellenc Sa Scie a chaine portative electrique
CA3014107A1 (en) 2010-04-16 2011-10-20 Baron Investments, Llc Laminated core element with interior flow channels
WO2016086987A1 (en) * 2014-12-03 2016-06-09 V-Cut Ab Guiding device for a power driven saw

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1825164A (en) * 1930-05-31 1931-09-29 Skillman Clarence Portable saw
US2572405A (en) * 1948-05-25 1951-10-23 Albert F Stone Turret-mounted chain-saw holding claw
NO147370C (no) * 1981-03-26 1983-03-30 Norcem As Tilleggsutstyr til motordrevet kjedesag.
SE450356B (sv) * 1982-06-21 1987-06-22 Osa Ab Sett for kapning av frihengande vesentligen horisontella objekt sasom stockar och liknande, och anordning for utforande av settet
US4558518A (en) * 1982-12-30 1985-12-17 Morabit Vincent D Tip stabilizing device for a chain saw
FR2555093B1 (fr) * 1983-11-23 1986-12-26 Horst Sellmaier Guide de tronconneuse
US4760646A (en) * 1987-01-09 1988-08-02 Frederick Siegler Tree pruner and hedge trimmer
DE9116053U1 (de) * 1991-12-24 1992-02-20 Discher, Hannelore, 3501 Niedenstein Schiene für eine Motorsäge
US5685080A (en) * 1996-04-22 1997-11-11 Makita Corporation Battery powered chain saw
US5826343A (en) * 1996-10-22 1998-10-27 Kinetic Stump Cutter, Inc. Chain saw attachment
ITFG990003A1 (it) * 1999-02-22 2000-08-22 Marco Cecchi Elettroseghetto alternativo, con lama dentellata sorretta da braccetti penduli, con guaina copri lama e supporto copri dentellatura girevoli

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013522090A (ja) * 2010-03-23 2013-06-13 ブライアン ジェイ ルース チェーンソー彫刻用ガイドバー

Also Published As

Publication number Publication date
ITRM20030374A1 (it) 2005-01-31
PT1502718E (pt) 2007-11-09
ITRM20030374A0 (it) 2003-07-30
EP1502718A3 (en) 2005-04-13
CY1106960T1 (el) 2012-09-26
ES2290627T3 (es) 2008-02-16
ATE369237T1 (de) 2007-08-15
DE602004007990D1 (de) 2007-09-20
EP1502718A2 (en) 2005-02-02

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