EP 2230056 A1 20100922 - Electric chain saw
Title (en)
Electric chain saw
Title (de)
Elektrokettensäge
Title (fr)
Scie à chaîne électrique
Publication
Application
Priority
CN 200910115100 A 20090317
Abstract (en)
The present invention discloses an electric chain saw, which includes a casing (1) as well as a motor and the brake device thereof installed in the casing. The brake device includes the following parts: A brake drum (4) sleeved on and revolving together with a motor shaft; and a brake strap (5) sleeved on outer edge of the brake drum (4), with one end connected with a first brake unit and the other end with a second brake unit. The brake device in the present invention adopts two brake units, and can deal with a normal braking condition and an emergency braking condition, respectively. When one of the brake units fails, the electric chain saw of the present invention can be braked via the other brake unit, fully satisfying requirements on operation safety of the electric chain saw, characteristic of quick brake, simple operation, and sensitive action. Besides, compared to the prior art electric chain saw adopting such a brake mechanism as a clutch, a lever and a gear, the present invention is simple in the overall structure and less in the part quantity, more advantageous in miniaturization design of the electric chain saw.
IPC 8 full level
B27B 17/08 (2006.01)
CPC (source: EP)
B27B 17/083 (2013.01)
Citation (search report)
- [XY] EP 0761398 A1 19970312 - MAKITA CORP [JP]
- [XA] WO 2008047433 A1 20080424 - ZENOAH CO LTD [JP], et al
- [Y] US 2005210685 A1 20050929 - JONG JUNG-CHANG [TW]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
AL BA ME RS
DOCDB simple family (publication)
EP 2230056 A1 20100922; EP 2230056 B1 20160217; CN 101590548 A 20091202; CN 101590548 B 20120718
DOCDB simple family (application)
EP 10155120 A 20100302; CN 200910115100 A 20090317