Positive lock ring binder mechanism

(19)

(11)

EP 1 854 644 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	21.11.2007 Bulletin 2007/47

(43)	Date of publication A2:
	14.11.2007 Bulletin 2007/46

(21)	Application number: 07107068.4

(22)	Date of filing: 27.01.2005

(51)

International Patent Classification (IPC):

B42F 13/26^(2006.01)

B42F 13/00^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

(30)

Priority:

15.03.2004 US 553231 P
17.06.2004 US 870168

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	05250415.6 / 1577119

(71)	Applicant: World Wide Stationery Manufacturing Company, Limited
	New Territories, Hong Kong (CN)

(72)	Inventor:
	Cheng, Hung Yu Hong Kong (CN)

(74)	Representative: Smaggasgale, Gillian Helen
	W.P. Thompson & Co. 55 Drury Lane London WC2B 5SQ London WC2B 5SQ (GB)

(54)	Positive lock ring binder mechanism

(57) A ring binder mechanism for retaining loose-leaf pages. The mechanism has ring members (63) that positively lock together to prevent unintentional openings. The mechanism includes a housing (11) that supports pivoting motion of hinge plates (59,61) for bringing the ring members to either an open position and a closed position. The mechanism also includes a control structure (15) that can pivot relative to the housing to controllably move the hinge plates to bring the ring members (63) together. In a closed and locked position of the mechanism, the control structure is releasably held behind protrusions of the hinge plates, thereby blocking the hinge plates pivoting motion and positively locking the ring members together.

Search report