Patent ID: 7886372

Claim:
A drain assembly for use in a sanitary vessel, comprising: a drain stopper assembly having: an elongate one-piece housing with a longitudinal axis defined therealong, said housing including a proximal extent for disposal proximate a vessel surface, an opposing distal extent for disposal proximate a waste outlet and a longitudinal body coextensive with said proximal and distal extents and defining a lumen therein, said body having each of an inner circumferential surface of predetermined inner diameter and an outer circumferential surface of predetermined outer diameter; a flange portion proximate said proximal extent wherein said flange portion has a fluid egress for delivery of fluids from said sanitary vessel to said housing lumen; a linearly reciprocatable drain stopper having a closure head from which an elongate shaft depends generally normally so that a longitudinal axis thereof is coincident with said housing longitudinal axis, said shaft having a proximal extent adjacent said closure head and an opposing free extent, wherein said stopper has a fully closed position wherein said closure head obstructs said fluid egress and a fully open position wherein said fluid egress remains unobstructed; and a securement region provided on said outer housing surface along said longitudinal body thereof and having a receiving region defined therewith; and an actuation assembly having a motion translation device in communication with a drain articulation device, said securement region effecting operational communication between said drain stopper assembly and said actuation assembly so that operation of said drain articulation member effects reciprocating motion of said drain stopper, wherein the motion translation device includes a motion input extent coupled with said drain articulation device and a motion output extent coupled with said actuation assembly, and wherein said actuation assembly includes a motion transfer mechanism, said motion transfer mechanism comprising: a carapace having an elongate body and a lumen therein, said lumen extending between a motion translation device ingress extent through which said motion translation device enters said lumen and a securement extent at which said carapace couples with said securement region; a guide disposed in said carapace lumen and restrained from movement therewithin, said guide having an elongate body wherein an external surface and an internal lumen thereof together delineate a guide wall; a slider disposed in said guide lumen, said slider having a longitudinal body with a motion translation device receiving extent defined at one end thereof for engagement with said motion translation device and an opposed rotator receiving extent; wherein that said carapace, said guide and said slider are disposed in coaxial intussusception with one another.