Patent ID: 6361132
Filing Date: 2002-03-26
Classification: E05D,E05F,E05Y,E06B

Abstract:
An overhead door swingably secured to inner lateral wall surfaces of a cabinet by a pair of stays such that a base end of each of the stays is rotatably secured to an inner lateral wall surface of the cabinet and a front end is pivotably fitted to an inner surface of the door at a position close to a lower edge thereof, said door being provided on the inner surface thereof with a pair of longitudinally arranged slide rail assemblies, each slide rail assembly comprising a relatively long outer rail and a relatively short inner rail slidably engaged with each other and, said inner rail being pivotably secured at an upper end to a front edge of a roof wall of the cabinet by a hinge, so that the door can be swung open or closed as a combined effect of slewing and sliding motions and, when fully opened, said door being placed on the roof wall of the cabinet, and a pair of stay holding tension springs, each spring being connected between a point upwardly and forwardly displaced from the base end of the corresponding stay on the inner lateral wall surface of the cabinet and a point in a middle portion of the stay, in order to urge the outer rails and the door upward relative to the inner rails, and a pair of longitudinal grooves for accommodating respective door holding tension springs, each door holding tension spring being arranged between an upper end of a corresponding hinge and a lower end of a corresponding groove, in order to decelerate any downward movement and accelerate any upward movement of the outer rails and the door relative to the inner rails.