Patent ID: 6052869
Filing Date: 2000-04-25
Classification: A47K,Y10T

Abstract:
An operating hinge for a seat and seat lid of a toilet bowl, including:a hinge case to be installed to a body of a toilet bowl;a shaft provided rotatably inside the hinge case;a means connected to the shaft and adapted to be connected to one of the seat and seat lid for rotating the shaft;a stationary cam secured inside the hinge case and having formed therein a central hole through which the rotating shaft is axially penetrated;a cam provided inside the hinge case in a vis-a-vis relationship with the stationary cam and having formed therein a central hole through which the rotating shaft is axially penetrated, to be slidable on, and rotatable with, the rotating shaft; anda resilient member urging the rotatable sliding cam toward the stationary cam;further comprising, to more positively control the rotation of the rotating shaft:a rubber ring fitted on the rotating shaft for rotation therewith, to abut the inner wall of the hinge case in a sealing relationship; anda viscous oil applied between the periphery of the rubber ring and the hinge case inner wall the rubber ring abuts.