EP 2420388 A1 20120222 - A chalk line device with means for preventing chalk line breakage
Title (en)
A chalk line device with means for preventing chalk line breakage
Title (de)
Kreidelinienvorrichtung mit einer Vorrichtung zum Verhindern von Schnurbruch
Title (fr)
Dispositif de cordeau traceur ayant un mécanisme pour prévenir la rupture du cordeau
Publication
Application
Priority
EP 10173271 A 20100818
Abstract (en)
The invention relates to a chalk line device (1) comprising a retracting device (5) which is linked to a spool (4) via a set of gears (9), and a chalk line which is attached to said spool (4) and which may either be coiled onto said spool (4) or uncoiled from said spool (4). Said set of gears (9) and said spool (4) being rotatably disposed inside a housing (2a, 2b) to rewind the uncoiled chalk line when said retracting device (5) transmits a force onto said spool (4) via said set of gears (9). When said spool (4) is exposed to a torque which exceeds a threshold value, at least one force transmitting link between said retracting device (5) and said spool (4) disconnects.
IPC 8 full level
B44D 3/38 (2006.01); B65H 75/40 (2006.01); B65H 75/44 (2006.01)
CPC (source: EP)
B44D 3/38 (2013.01); B65H 75/406 (2013.01); B65H 75/4418 (2013.01); B65H 75/4494 (2013.01); B65H 2701/357 (2013.01); B65H 2701/537 (2013.01)
Citation (search report)
- [YA] US 4189107 A 19800219 - GRILLIER JEAN-CLAUDE [FR], et al
- [YA] US 2006144985 A1 20060706 - WHITNEY HAMILTON S M [US]
- [A] US 2009158606 A1 20090625 - JOHNSTON JOHN [US], et al
- [A] US 5683055 A 19971104 - DUFOUR JEAN GUY [CA]
Designated contracting state (EPC)
AL 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)
BA ME RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 10173271 A 20100818