EP2036687A3 - Chainsaw - Google Patents

Chainsaw Download PDF

Info

Publication number
EP2036687A3
EP2036687A3 EP08252571A EP08252571A EP2036687A3 EP 2036687 A3 EP2036687 A3 EP 2036687A3 EP 08252571 A EP08252571 A EP 08252571A EP 08252571 A EP08252571 A EP 08252571A EP 2036687 A3 EP2036687 A3 EP 2036687A3
Authority
EP
European Patent Office
Prior art keywords
guide bar
sprocket drive
saw chain
drive wheel
assembly
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.)
Withdrawn
Application number
EP08252571A
Other languages
German (de)
French (fr)
Other versions
EP2036687A2 (en
Inventor
Michael Bowden
James Stuart Douglas
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.)
Husqvarna UK Ltd
Original Assignee
Husqvarna UK Ltd
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 Husqvarna UK Ltd filed Critical Husqvarna UK Ltd
Publication of EP2036687A2 publication Critical patent/EP2036687A2/en
Publication of EP2036687A3 publication Critical patent/EP2036687A3/en
Withdrawn legal-status Critical Current

Links

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
    • B27B17/02—Chain saws equipped with guide bar
    • B27B17/025—Composite guide bars, e.g. laminated, multisectioned; Guide bars of diverse material
    • 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
    • B27B17/14—Arrangements for stretching the chain saw

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

A chainsaw comprises a main body (1), a motor housed within the main body, the motor being drivably connected to a sprocket drive shaft (6), and a guide bar/saw chain assembly (4). The assembly (4) comprises a guide bar (7, 8), a saw chain (12) and a sprocket drive wheel (5). The guide bar has first and second guide bar portions (7, 8) telescopically connected together, and the sprocket drive wheel (5) is associated with the second guide bar portion (8). The saw chain (12) is in drivable engagement with the sprocket drive wheel (5) and passes around the peripheries of the first and second guide bar portions (7, 8). The sprocket drive wheel (5) is in drivable engagement with the sprocket drive shaft (6). The assembly (4) is movable between a first, non-operative position in which the first and second guide bar portions (7, 8) are positioned so that the saw chain (12) is not tensioned, and a second, operative position in which the first and second guide bar portions are positioned so as to tension the saw chain.
EP08252571A 2007-09-11 2008-07-29 Chainsaw Withdrawn EP2036687A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0717725A GB2452723A (en) 2007-09-11 2007-09-11 Chainsaw tensioning mechanism

Publications (2)

Publication Number Publication Date
EP2036687A2 EP2036687A2 (en) 2009-03-18
EP2036687A3 true EP2036687A3 (en) 2010-11-24

Family

ID=38640608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08252571A Withdrawn EP2036687A3 (en) 2007-09-11 2008-07-29 Chainsaw

Country Status (2)

Country Link
EP (1) EP2036687A3 (en)
GB (1) GB2452723A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11104026B2 (en) 2015-03-04 2021-08-31 Husqvarna Ab Chain and bar cassette and chainsaw guide bar with tension indicator
DE102019121221B4 (en) * 2019-08-06 2023-08-03 Jörg Hillmann Chain tensioning device of a chainsaw

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267973A (en) * 1964-06-01 1966-08-23 C B Tool Company Chain saw bar adjusting device
US4583291A (en) * 1984-06-01 1986-04-22 Mcculloch Corporation Electric chain saw speed reduction device
DE29823082U1 (en) * 1998-12-24 1999-11-04 Otten, Bernd, 47551 Bedburg-Hau Self-tensioning chain rail for chainsaws

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532981A (en) * 1946-02-09 1950-12-05 E C Atkins And Company Chain saw frame
JPS6024501U (en) * 1983-07-28 1985-02-19 杉原林機株式会社 Guide bar for chain saw
US5174029A (en) * 1991-12-11 1992-12-29 Jt Investments Chain saw tensioning mechanism
DE4219956C2 (en) * 1992-06-18 2000-03-30 Stihl Maschf Andreas Cutting device for a motor chain saw
US5528835A (en) * 1994-11-29 1996-06-25 Ra; Do-Jin Chain saw tensioning apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267973A (en) * 1964-06-01 1966-08-23 C B Tool Company Chain saw bar adjusting device
US4583291A (en) * 1984-06-01 1986-04-22 Mcculloch Corporation Electric chain saw speed reduction device
DE29823082U1 (en) * 1998-12-24 1999-11-04 Otten, Bernd, 47551 Bedburg-Hau Self-tensioning chain rail for chainsaws

Also Published As

Publication number Publication date
GB0717725D0 (en) 2007-10-17
GB2452723A (en) 2009-03-18
EP2036687A2 (en) 2009-03-18

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