Patent ID: 7032254
Filing Date: 2006-04-25
Classification: A47K,E03C

Abstract:
1. A plug for a sink drainage, comprising: a hollow plug body fitted into said sink drainage, having an inner platform, and a water stopper attached onto a top surface thereon; and a plug stem moveably engaged with said plug body for shifting said plug between a water-flowing position and a water-sealing position, comprising: a circular stem body detachably engaged with said water stopper, having a threaded inner wall and a terrace inwardly projected from a lower portion of said inner wall; an elongated hollow plug shaft penetrating said stem body to be screwed into said inner platform for coupling said plug stem with said plug body, wherein said plug shaft has a side slot longitudinally defined at a top wall thereof; a plug knob having a cylinder body, an annular channel longitudinally and upwardly extended from a bottom end of said cylinder body to define an outer wall and an inner core body with said plug knob, a biasing bridge integrally extended between said outer wall and said inner core at an upper portion of said cylinder body, and a knob shoulder circularly flanged from a lower portion of said cylinder body for biasing against said terrace of said circular stem body; and a plug cap for enclosing said plug shaft and said plug knob within said plug stem, comprising a gripping portion and a lower threaded portion which is correspondingly mated with said threaded inner wall of said stem body; wherein in said water-sealing position, said plug shaft is inserted into said plug knob by receiving said biasing bridge within said side slot for ensuring said stem body and said water stopper engaged with a water-tight manner, in said water-flowing position, said plug cap is lifted up for pulling said plug knob upwardly shifted along said plug shaft until of said biasing bridge is securely positioned above a top end surface of said plug shaft in a stable manner so as to define a gap between said stem body and said water stopper for draining off said water.