EP0945234A3 - Elektrokettensäge mit Sägekettenschnellbremsvorrichtung - Google Patents

Elektrokettensäge mit Sägekettenschnellbremsvorrichtung Download PDF

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Publication number
EP0945234A3
EP0945234A3 EP99102491A EP99102491A EP0945234A3 EP 0945234 A3 EP0945234 A3 EP 0945234A3 EP 99102491 A EP99102491 A EP 99102491A EP 99102491 A EP99102491 A EP 99102491A EP 0945234 A3 EP0945234 A3 EP 0945234A3
Authority
EP
European Patent Office
Prior art keywords
chain
saw
brake
electric motor
circuit
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Withdrawn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
EP99102491A
Other languages
English (en)
French (fr)
Other versions
EP0945234A2 (de
Inventor
Egbert Steinbrueck
Juergen Dolata
Heiko Below
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0945234A2 publication Critical patent/EP0945234A2/de
Publication of EP0945234A3 publication Critical patent/EP0945234A3/de
Withdrawn legal-status Critical Current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
    • B27B17/08—Drives or gearings; Devices for swivelling or tilting the chain saw
    • B27B17/083—Devices for arresting movement of the saw chain

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)

Abstract

Bei einer Elektrokettensäge mit einem in einem Maschinengehäuse (10) aufgenommenen Elektromotor (33) zum Antreiben einer Sägekette, mit zwei am Maschinengehäuse angeordneten Handgriffen (11,13), mit mindestens einer an einem der Handgriffe (11,13) festgelegten Schalttaste (17,20) zum Schalten eines im Stromkreis des Elektromotors (33) angeordneten elektrischen Schalters (18), mit einer Kettenbremse zum schnellen, mechanischen Festbremsen der Sägekette und mit einem vor dem vorderen Handgriff (13) am Maschinengehäuse (10) schwenkbar gelagerten Handschutz (14), der die Kettenbremse in seiner einen Schwenkposition (B) aktiviert und in seiner anderen Schwenkposition (A) löst, ist zum Zwecke des sofortigen Abschaltens des Elektromotors (33) beim Aktivieren der Kettenbremse ohne zusätzlichen Schalter im Stromkreis des Elektromotors (33) aus der Schwenkbewegung des Handschutzes (14) von seiner einen die Kettenbremse lösenden Schwenkposition (A) in die andere Schwenkposition (B) eine von der Stellung der mindestens einen Schalttaste (17,20) unabhängige Betätigung des elektrischen Schalters (18) zum Öffnen des Stromkreises abgeleitet.
EP99102491A 1998-03-24 1999-02-10 Elektrokettensäge mit Sägekettenschnellbremsvorrichtung Withdrawn EP0945234A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998112861 DE19812861B4 (de) 1998-03-24 1998-03-24 Elektrokettensäge
DE19812861 1998-03-24

Publications (2)

Publication Number Publication Date
EP0945234A2 EP0945234A2 (de) 1999-09-29
EP0945234A3 true EP0945234A3 (de) 2002-01-30

Family

ID=7862092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99102491A Withdrawn EP0945234A3 (de) 1998-03-24 1999-02-10 Elektrokettensäge mit Sägekettenschnellbremsvorrichtung

Country Status (2)

Country Link
EP (1) EP0945234A3 (de)
DE (1) DE19812861B4 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE515430C2 (sv) * 1999-12-02 2001-08-06 Electrolux Ab Bromsutlösningsanordning för handhållet arbetsredskap

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4335514A (en) * 1980-08-08 1982-06-22 Black & Decker Inc. Switch-brake interlock for chain saw
EP0214455A1 (de) * 1985-08-30 1987-03-18 GARDENA Kress + Kastner GmbH Motorisch betriebenes Handgerät
US4811487A (en) * 1983-12-14 1989-03-14 Ryobi Ltd. Motor-driven chain saw braking/locking apparatus
GB2273753A (en) * 1992-12-17 1994-06-29 Goblin Ltd Safety mechanism for power tool
US5401928A (en) * 1993-06-07 1995-03-28 Kelley; William J. Safety control for power tool
DE19812860A1 (de) * 1998-03-24 1999-09-30 Bosch Gmbh Robert Kettensäge

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0929708A (ja) * 1995-05-16 1997-02-04 Makita Corp チェーンソーのブレーキ装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4335514A (en) * 1980-08-08 1982-06-22 Black & Decker Inc. Switch-brake interlock for chain saw
US4811487A (en) * 1983-12-14 1989-03-14 Ryobi Ltd. Motor-driven chain saw braking/locking apparatus
EP0214455A1 (de) * 1985-08-30 1987-03-18 GARDENA Kress + Kastner GmbH Motorisch betriebenes Handgerät
GB2273753A (en) * 1992-12-17 1994-06-29 Goblin Ltd Safety mechanism for power tool
US5401928A (en) * 1993-06-07 1995-03-28 Kelley; William J. Safety control for power tool
DE19812860A1 (de) * 1998-03-24 1999-09-30 Bosch Gmbh Robert Kettensäge

Also Published As

Publication number Publication date
DE19812861B4 (de) 2007-07-05
EP0945234A2 (de) 1999-09-29
DE19812861A1 (de) 1999-09-30

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