Ring binder

A ring binder including a base member supporting a plurality of ring members, and an opening mechanism at each end of the base member for opening the plurality of ring members, each opening mechanism including lock means to lock the opening mechanisms in their closed position, the base member comprising a rigid upper structure supporting a pivotable lower structure to which the ring members are mounted, wherein at each end of the binder, the opening mechanism is pivotally supported by and between the lower structure, and the upper structure, externally of the lower structure, and internally of the upper structure, and wherein a base of the opening mechanism acts on the top surface of the pivotable lower structure to force this lower structure to move downwards and pivot.

A ring binder including a base member supporting a plurality of ring members, and an opening mechanism at each end of the base member for opening the plurality or ring members, each opening mechanism including lock means to lock the opening mechanisms in their closed position, the base member comprising a rigid upper structure supporting a pivotable lower structure to which the ring members are mounted, wherein at each end of the binder, the opening mechanism is pivotally supported between the lower structure and the upper structure, externally of the lower structure, and internally of the upper structure, wherein the opening mechanism pivots between the upper and lower structures about at least one projection extending from each side of the opening mechanism, and wherein each projection is supported adjacent the outer end of the side of the lower structure and by the outer end of the overlapping side of the upper structure, the outer end of the overlapping side of the upper structure being crimped.

A ring binder including a base member supporting a plurality of ring members, and an opening mechanism at each end of the base member for opening the plurality of ring members, each opening mechanism including lock means to lock the opening mechanisms in their closed position, the base member comprising a rigid upper structure supporting a pivotable lower structure to which the ring members are mounted, wherein at each end of the binder, the opening mechanism is pivotally supported by and between the lower structure and the upper structure, externally of the lower structure, and internally of the upper structure, wherein a base of the opening mechanism acts on the underneath of the pivotable lower structure to force this lower structure to move upwards and pivot, further wherein the opening mechanism pivots between the upper and lower structures about at least one projection extending from each side of the opening mechanism, each projection being supported adjacent the outer end of the side of the lower structure and by the outer end of the overlapping side of the upper structure, the outer end of the overlapping side of the upper structure being crimped.

A ring binder including a base member supporting a plurality of ring members, and an opening mechanism at each end of the base member for opening the plurality of ring members, each opening mechanism including lock means to lock the opening mechanisms in their closed position, the base member comprising a rigid upper structure supporting a pivotable lower structure to which the ring members are mounted, wherein at each end of the binder, the opening mechanism is pivotally supported by and between the lower structure and the upper structure, externally of the lower structure, and internally of the upper structure, wherein a base of the opening mechanism acts on the top surface of the pivotable lower structure to force this lower structure to move downwards and pivot, further wherein the opening mechanism pivots between the upper and lower structures about at least one projection extending from each side of the opening mechanism, each projection being supported adjacent the outer end of the side of the lower structure and by the outer end of the overlapping side of the upper structure, the outer end of the overlapping side of the upper structure being crimped.