Abstract: A closing control and opening free assembly for a hinge connection is mounted within various articles of furniture or implements. The assembly has a mounting element having a circular hole, a pivot member or rotor disk connected therewith, the circumference of which gets into contact with the inside surface of the circular hole, one or more pair of spring and roller positioned in each of recess formed on the periphery of the circular hole or the pivot member, and a brake component. When opening a rotatable section upward, the pivot can rotate together with the brake component, and thus it is possible to open freely the rotatable section. When closing the rotatable section downward, the pivot can not rotate with the brake component. Consequently, the rotatable section is rested at a desired turning position.

Abstract: An assembly for controlling turn of a hinge is mounted within one section of a hinged structure such as a laptop, palm-top or handy personal computer. In the assembly housing, there are arranged an elongated pivot, a cylindric plastic sleeve having an aperture for setting the pivot, and a socket having a frusto-conical aperture. The sleeve is usually of a truncated biconical shape and has some slot extends axially to one or other end thereof. The inner surface of the housing bore inclines axially in the opposite direction to the inner surface of the socket so that the inclined inner surface can contact with the other frusto-conical outer surface of the sleeve.

Abstract: In a door closer, there are provided a vertical rotatable shaft associated with the rotation of a door through an arm, two cams installed integral with the shaft, an urging device for rotating the door in the closing direction through one of the cams and a cylinder device for braking the door during door closing operation through the other of the cams. Thus, the opening of the door is effected by overcoming the force of the urging device and hence the door can be opened lightly. When the door is released, the force of the urging device is transmitted to the one cam and then to the arm, so that the door can be automatically closed. During door closing operation, the cam surface of the other cam pushes the piston rod of the cylinder device, whereby the rotation of the other cam and hence the rotation of the shaft connected with the other cam are braked, avoiding severe shocks to the door.

Abstract: A hinge-type lid mounting device has a main body to be attached to a case or the like, and the main body has at its one end a cam body pivotally mounted through a first pin. The other end of the main body defines a fixed spring seat, and a spring is interposed between the fixed spring seat and a movable spring seat adapted to abut the cam body. A lid supporting member is rotatably mounted on the cam body through a second pin perpendicular to the first pin. A lid is anchored at its one end to the lid supporting member through a lid anchoring member and a fixing screw.

Abstract: A hinge device comprising a main body in the form of a channel member, a mount pin projecting outward from the web of the main body, and a pressing plate pivoted at its one end to the inner side of one side wall of the main body and retractable into the channel of the main body, the pressing plate being provided with a wedge formation on one side surface thereof opposed to said one side wall of the main body so as to gradually approach the other side wall of the main body as the pressing plate is retracted into the channel of the main body. A plate, such as the closure plate of a cabinet, can be loosely fitted into the channel of the main body with the pressing plate withdrawn therefrom and can be tightly held in the channel by the wedging effect produced when the pressing plate is retracted. The hinge device can be installed in place easily and yet holds the plate reliably.