Patent ID: 6178597
Filing Date: 2001-01-30
Classification: E05F,E05Y,Y10T

Abstract:
An operative hinge for use with an opening/closing body, comprising:a hinge case to be installed to a toilet bowl body for operating the opening/closing body;a shaft provided rotatably within the binge case to support the opening/closing body;a stationary cam fixed within the hinge case and having formed therein a central through-hole through which the rotating shaft is axially penetrated;a cam provided within the hinge case and having formed therein a central through-hole through which the rotating shaft is axially penetrated to be slidable on, and rotatable with, the rotating shaft; anda resilient means for urging the rotatable sliding cam toward the stationary cam, the hinge further comprising, to control the rotation or the rotating shaft:a damping means consisting of:a rubber ring fitted on the rotating shaft and interposed between the outer surface of the rotating shaft and the inner wall of the hinge case; anda viscous oil applied between the outer surface of the rubber ring and inner wall of the hinge case;the rubber ring having spiral recesses formed on the outer surface thereof.