Patent ID: 7654764
Filing Date: 2010-02-02
Classification: B42F

Abstract:
1. A ring binder mechanism for holding loose-leaf pages, the mechanism comprising: a housing; a driving mechanism supported by the housing for movement relative to the housing; rings for holding the a ring actuator positionable relative to the housing and operatively connected to the driving mechanism for moving the ring members between their closed and opened positions; a first blocking structure for blocking the ring members in their closed position against movement to their open position, the first blocking structure being positionable relative to the housing between a blocking position in which movement of the ring members toward their opened position is inhibited by the first blocking structure and an unblocking position in which the first blocking structure allows the ring members to move to their opened position, said first blocking structure being operatively connected to the ring actuator so the ring actuator moves the first blocking structure between its blocking and unblocking positions when the ring actuator is used to move the ring members between their closed and opened positions; and a blocking device including a second blocking structure for blocking the ring members in their closed position against movement to their opened position, the second blocking structure being positionable relative to the housing between a blocking position in which the ring members are inhibited by the second blocking structure against movement toward their opened position and an unblocking position in which the second blocking structure allows the ring members to be moved from their closed position to their opened position by positioning of the actuator, said second blocking device being operable independent of the ring actuator.