Ring binder with low profile ring metal

Details Ring binder with low profile ring metal Ring binder with low profile ring metal

1997-02-25

1998-10-06

Howell, Daniel W.

Binder device releasably engaging aperture or notch of sheet

Sheet retainer travels arcuate path

Travel in plane perpendicular to axis of rotation

402 37, 402 38, 402 42, B42F 304

Patent

active

058167293

ABSTRACT:
A ring binder (10) for holding hole punched sheets of paper (P) includes a low profile ring metal (20). A pair of leaves (28, 30) are hingedly connected to each other for relative movement of the leaves to each other. A plurality of binder rings (22, 24, 26) are each formed of a pair of ring halves (22a, 22b, 24a, 24b, 26a, 26b). One end of each ring half is attached to a separate one of the leaves whereby movement of the leaves moves the ring halves to open and close the binder. A shield (40) covers the leaves, and release levers (44, 46) are located at each end of the cover. The levers are operable by a user of the ring binder to open and close the binder. Both release levers extend substantially co-planar to the cover and the length of the cover and release levers generally corresponds to the length of a sheet paper stored in the binder. This allows the overall size of the binder to be smaller than that of a ring binder holding the same size sheets of paper but using a conventional ring metal construction.

REFERENCES:
patent: 779142 (1905-01-01), Trussell
patent: 1238846 (1917-09-01), Trussell
patent: 1896839 (1933-02-01), Dawson
patent: 1927113 (1933-09-01), Dawson
patent: 1997447 (1935-04-01), Birbaum
patent: 2088431 (1937-07-01), Newman
patent: 2645227 (1953-07-01), Segal
patent: 5660490 (1997-08-01), Warrington

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