Abstract: The height adjustable standpipe includes multiple, cylindrical, coaxial drain sections of gradually diminishing cross section. The sections preferably alternate between brass and PVC plastic, and have grooves adjacent the ends of the PVC sections for retaining O-rings that serve as gaskets between the two adjacent sections. Thus, for example, a PVC section would preferably have one or two peripheral grooves on the outer surface near the end that passes inside of the next adjacent brass section, and the same PVC section would have one or two peripheral grooves on the inner surface near the opposite end, through which passes another brass section. Each of these peripheral grooves includes a rubber O-ring seated therein and projecting therefrom to form a water-tight seal with the adjacent surface of the brass section engaged by that end of the PVC section. A travel stop mechanism is employed to limit the travel of the sections of the adjustable standpipe with respect to one another.

Abstract: The height adjustable sink and vanity includes a fixed base portion that preferably includes two doors on the front that swing open to the sides. The cabinet is freestanding, but has no supporting surfaces on the front portion. The sink and countertop are vertically adjustable as a unit, with a standpipe below the sink that easily accommodates the adjustability. Projecting downward from the right and left edges of the countertop are panels that help prevent fingers and other objects from being pinched between the adjustable countertop portion and an adjacent, fixed surface. A remote control unit may be located on the end of a cord connected to a small electric motor that moves the unit up and down, depending on the selection made on the remote control unit.