Baths – closets – sinks – and spittoons – Strainer – stopper – plug or closure – Plugs
Patent
1996-03-07
1997-01-14
Walczak, David J.
Baths, closets, sinks, and spittoons
Strainer, stopper, plug or closure
Plugs
4287, 4292, A47K 114
Patent
active
055927017
ABSTRACT:
A sink stopper comprises a perforated strainer basket, a sealing member, an upwardly extending handle, and a downwardly depending locating stem. The locating stem comprises a base portion and two substantially parallel spaced-apart co-operating legs that are substantially rigid yet resiliently deformable towards each other. Each peripheral surface comprises an outwardly and upwardly sloped guide surface disposed at the bottom end portion thereof, an outwardly and downwardly sloped grate-contacting surface disposed at the top end portion thereof, and a grate-receiving notch disposed between the guide surface and the grate-contacting surface. The grate-receiving notch includes an upwardly facing catch surface shaped and dimensioned to catch on the grate in interfering relation therewith. The maximum width of the locating stem at the bottom end of the sloped grate-contacting surface is greater than the diameter of the central guiding aperture in the grate. The sink stopper is movable between a seated flow precluding position whereat the locating stem engages the grate at the outwardly and downwardly sloped grate-contacting surface so as to thereby bias the sink stopper downwardly, and a raised straining position whereat the locating stem engages the grate at the grate-receiving notch, so as to thereby support the sink stopper and so as to resist upward movement therefrom of the sink stopper.
REFERENCES:
patent: 1753631 (1930-04-01), Walters
patent: 3027569 (1962-04-01), Lantz et al.
patent: 3525105 (1970-08-01), Richards
patent: 3609776 (1971-10-01), Haldopoulos et al.
patent: 4160293 (1979-07-01), Niemann
patent: 4232407 (1980-11-01), Williams
Eloshway Charles R.
Hewson Donald E.
Walczak David J.
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