Abstract:
A damper assembly is provided for a hinge, which comprises a damping device (10) with a piston arranged to be moveable over a working stroke within a cylinder (15) containing damping fluid. The damping device (10) is mounted on a bracket (11) and retained in position by a housing (12). A mechanism (18, 19) is provided for converting rotational movement of the hinge in at least part of one direction into actuation of the damping device (10) on its working stroke. The movement converting mechanism (18, 19) is arranged to act on the cylinder (15) at a position substantially outside the range of movement of the piston on its working stroke. The arrangement minimises the transmission of radial forces from the movement of the door to the cylinder (15).
Abstract:
A hinge assembly is provided in the form of a toggle type hinge, with an arm assembly (11) anchorable in use to a first member and a cup flange (13) pivotally connected thereto and anchorable in use to a second member. The assembly includes a linear damping device (15) and a mechanism for converting pivotal movement of the hinge into actuation of the damping device, at least over part of the range of this pivotal movement. The movement converting mechanism is arranged to produce the actuation of the damping device (15) through rotational movement about its linear axis via transmission of at least two equal and opposite forces acting symmetrically about this axis.
Abstract:
A damper assembly comprises a piston and cylinder type damper with a piston assembly (10) mounted for reciprocal movement in a cylinder (12) containing damping fluid. The piston assembly divides the interior of the cylinder into two chambers and provides a means of communication in the form of channels (12a, 12b, 17, 20) for passage of damping fluid between the chambers. The channels are arranged to allow passage of more or less damping fluid, depending on the position of the piston assembly with respect to the cylinder along its path of reciprocation.
Abstract:
A piston and cylinder type damper is provided, with a cylinder (11) having a piston assembly (15) mounted for reciprocal movement therein. The piston assembly (15) divides the cylinder (11) into two separate chambers (12a, 12b), with a restricted flow path (30, 31) for passage therebetween of damping fluid contained within the cylinder. A piston rod (13) is mounted for reciprocal movement with respect to the cylinder (11) and acts via a first one of the chambers (12a) on the piston assembly (15) in a first direction. A seal assembly (17) is provided for sealing between the piston rod (13) and the cylinder (11) in order to retain damping fluid in the first chamber (12a). The seal assembly (17) is movable axially with respect to the cylinder (11), with the cylinder further including a centering device (24) for assisting alignment of the seal assembly (17).
Abstract:
A damped hinge assembly is provided that comprises a hinge unit (10) and a damping unit (14). A mechanism is provided for connecting the two units together for purposes of transportation and handling, as well as for ease of installation. The connecting mechanism allows the units to move relative to one another between a transit state, which allows access for installation purposes, and a working position in which the damping unit is operative to provide resistance to closing movement of a door.
Abstract:
A hinge assembly is provided comprising a toggle type hinge (10) with a linear damping device (13) arranged with its longitudinal axis parallel to the axis of movement of the hinge. First and second actuating devices (19, 30) are provided for operating the damping device. Means (20, 32, 55) are provided for activating the first and second actuating devices in response to movement of the hinge.