Abstract: A lever-arch type file mechanism (100, 200) is disclosed as including a base (102, 202), two rings extending upwardly from the base (102, 202), each ring a post (106, 206) fixed to the base (102, 202) and an arch (124, 207) movable relative to the base (102, 202) and the post (106, 206), a lever assembly (108, 208) movable relative to the base (102, 202) between two stable configurations to pivot the arches (124, 207) relative to the posts (106, 206) to selectively move the rings between a ring-closed configuration and a ring-open configuration, and the lever assembly (108, 208) includes at least a first link (136, 216) and a second link (132, 212) connected with each other, and the first link (136, 216) is pivotable relative to the base (102, 202) about a first axis (P-P, W-W) fixed relative to the base (102, 202) and that the second link (132, 212) is pivotable relative to the base (102, 202) about a second axis (S-S, T-T) fixed relative to the base (102, 202), and during movement of the lever assembly (108

Abstract: The present invention relates to a plate clip comprising a seat plate having a reel and a base plate, a pressing frame pressed on the base plate by a spring, and an open handle. The open handle forming a lever is disposed on the pressing frame, and its fulcrum is at the reel. When a user opens the plate clip to clamp papers, he can press down the open handle to lift the pressing frame easily by the lever function, thus the finger of the user would not be injured accidentally.

Abstract: A ring binder mechanism for retaining loose-leaf pages has a housing, hinge plates, and ring members mounted on the hinge plates for retaining pages on the mechanism. The housing includes a plastic upper housing element and a lower housing element underlying the upper housing element. The lower housing element may be a single piece or multiple pieces. An actuating lever may be pivotally mounted on the housing for engaging the hinge plates and pivoting them to selectively move the ring members between an open position and a closed position.

Abstract: A punch comprises a connecting bar and two punching means. The two punching means are mounted rotatably to the connecting bar. The punch according to the invention may punch two or three holes on sheets of paper as desired by rotating the connecting bar and one punching means since two punching means are mounted rotatably to the connecting bar.

Abstract: A ring binder mechanism that retains loose-leaf pages and has ring members that gently close and readily lock together. The mechanism comprises a housing that supports two hinge plates for loose pivoting motion, moving the ring members between an open position and a closed position. A control structure is movable by an actuating lever, which is pivotally mounted on the housing, between a first and second position. In the first position, pivoting motion of the hinge plates is blocked, and in the second position, the hinge plates can freely pivot. A spring is engageable with the lever for urging the lever to move the control structure toward the first position.

Abstract: A ring mechanism comprises a housing, hinge plates, and ring members mounted on the hinge plates for retaining pages on the mechanism. An actuating lever is mounted on the housing for engaging the hinge plates and pivoting them to selectively move the ring members between an open position and a closed position. A travel bar is provided to block unintentional pivoting movement of the hinge plates when they are in the closed position. The lever pivots in a direction from one lateral side of the housing toward the other lateral side of the housing, i.e., about an axis that is oriented perpendicularly to the longitudinal axis of the housing and that extends upwardly relative to the housing. A ramped surface on the lever, e.g., a helical surface or a cam surface, engages the hinge plates to drive them to their open configuration.

Abstract: A ring mechanism for holding loose-leaf pages has an elongate housing and at least two rings for holding the loose-leaf pages. Each ring includes a first ring member and a second ring member, with the first ring member being movable relative to the housing between a closed position and an open position of the rings. An actuator is pivotable relative to the housing on a pivot axis that is parallel to or coaxial with a longitudinal axis of the housing and is operatively connected to the ring members for opening and closing the rings. A locking system is positionable relative to the housing between a locked position in which the ring members are held in the closed position of the rings and an unlocked position. The actuator is also operatively connected to the locking system for positioning the locking system between its locked and unlocked positions.

Abstract: A ring mechanism is selectively configurable between an open configuration in which loose leaf pages can be added or removed from the mechanism and a closed configuration in which loose leaf pages are retained by the ring mechanism. Ring mechanism including an elongate frame having first and second frame elements. A hinge pin interconnects the first and second frame elements to permit pivoting movement of the frame elements relative to each other. At least one ring includes a first ring member mounted on the first frame element and a second ring member mounted on the second ring element. At least one hanging member is mounted on the frame for releasably hanging the ring mechanism from a support and inhibiting longitudinal movement of the hanging member relative to the support.

Abstract: A lever-arch type file mechanism (100, 200, 300) is disclosed as including a base (102) two rings secured to and extending upwardly from the base (102) for engaging holes in pieces of paper, each ring including a post (104, 204) fixed to the base (102) and an arch element (106, 206) movable relative to the base (102) and the post (104, 204); a lever (110, 210, 310) operable to move the arch elements (106, 206) relative to the posts (104, 204) between a closed configuration in which the rings are closed and an open configuration in which the rings are open; and the arch elements (106, 206) are joined by an integrally formed bent section (120, 220) which is asymmetrically bent about its mid point.

Abstract: A ring binder mechanism for retaining loose-leaf pages comprises a housing and first and second hinge plates supported by the housing for pivoting movement. Ring members are mounted on the hinge plates for movement with the hinge plates between closed and open positions. Hook-shaped formations on fee ends of the ring members lock the ring members together when closed. The first hinge plate is slidable relative to the second hinge plate in a direction along a longitudinal axis of the housing for disengaging the hook-shaped formations and allowing the ring members to open. An actuator may be mounted on the housing for moving the first hinge plate to disengage the hook-shaped formations. In addition, friction buffers may be positioned between the hinge plates for aiding the sliding movement of the first hinge plate relative to the second hinge plate.

Abstract: A ring binder mechanism includes a housing and first and second hinge plates supported by the housing for pivoting movement relative thereto. A first ring member is mounted on the first hinge plate and moveable with the pivoting motion of the first hinge plate relative to a second ring member between a closed position and an opened position. An interlocking formation locks the first ring member and second ring member in the closed position. An actuator is mounted on the housing for movement relative to the housing. The actuator is adapted to pivot the first and second hinge plates and to translate the first hinge plate relative to the second hinge plate in a direction substantially parallel to a longitudinal axis of the housing.

Abstract: A ring mechanism for retaining loose leaf pages has a housing and hinge plates supported by the housing for pivoting motion relative to the housing. Ring members are mounted on the hinge plates and are moveable between a closed position and an open position. An actuator is mounted on the housing for movement relative to the housing for causing pivoting motion of the hinge plates. A locking element releasably locks the closed ring members in a locked position and releases the closed ring members to move to the open position in an unlocked position. An intermediate connector operably connects the locking element to the actuator. The intermediate connector is deformable during movement of the actuator.

Abstract: A ring binder mechanism for retaining loose leaf pages. The mechanism includes a rigid, elongate plate having a longitudinal axis. Hinge plates are supported by the plate for pivoting relative to the elongate plate. Rings for holding loose leaf pages include ring members mounted on the hinge plates and moveable between a closed position and an open position. A control structure is supported by the elongate plate and controllably pivots the hinge plates to move the ring members between the closed and open positions. The control structure has a travel bar connected to the hinge plates for moving the hinge plates between the closed and open positions. A spring biases the travel bar to a position toward the closed position of the hinge plates.

Abstract: The invention relates to a loose-leaf ring for retaining loose-leaf pages comprising: two half ring members for retaining loose-leaf pages; and a resilient connector for movably connecting two half ring members. The loose-leaf ring according to the invention is easy to open and close and is not likely to deform, and allows loose-leaf pages retained by it to be turned easily.

Abstract: A ring binder mechanism for retaining loose-leaf pages. The mechanism has ring members that positively lock together to prevent unintentional openings. The mechanism includes a housing that supports pivoting motion of hinge plates for bringing the ring members to either an open position and a closed position. The mechanism also includes a control structure that can pivot relative to the housing to controllably move the hinge plates to bring the ring members 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.

Abstract: A ring mechanism for a loose-leaf binder comprises a thin, elongate plate and at least two ring members supported by the elongate plate. The ring members move between an open position for receiving and removing loose-leaf pages and a closed position for capturing the loose-leaf pages on the ring while permitting movement of the pages along the ring. The elongate plate has a longitudinal end including spaced apart first and second end portions located on one transverse side of the elongate plate. The first and second end portions are bent over to present a longitudinally facing surface which is blunt. A method of manufacturing a ring mechanism for a loose-leaf binder is also disclosed.

Abstract: A ring binder having flexible straps for lacing through holes in loose-leaf items having being bound, each strap having a clasp for clasping the strap to form it into rings of different size.

Abstract: A ring binder including an elongate base plate having ring segments fixed thereto, a flap hinged to the base plate having mating ring segments thereon swingable to open and close the rings, and a crankshaft journalled on the base plate for swinging the flap.