Title: Standpipe adapter for sink drains of varied diameter

Abstract: An adapter for sink drains of varied diameter, with a double seal positioning a standpipe perpendicularly with respect to the sink bottom, there being an upper seal supportably stopped upon the sink bottom or drain flange, and there being a lower seal depressibly engaged within the drain diameter, and characterized by a base of soft rubber-like material smaller in diameter than the drain and integral with upper and lower seals that have flexible fluid tight engagement with the sink and drain while permitting lateral deflections of the standpipe.

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Inventors: Brown, Jerome D. (La Mesa, CA, US)
Mansfield, John W. (La Mesa, CA, US)

Application Number: 692979
Filing Date: 1976-06-04
Publication_date: 1978-03-07
Assignee: Brown; Jerome D. (La Mesa, CA)
Primary Class(es): 137/593 4/680, 137/577
Other Classes:
US Patent Ref:

994442	Jun, 1911	Coles	4/256.
1869049	Jul, 1932	Card	4/256.
1894711	Jan, 1933	Schacht	4/256.
2001230	May, 1935	Wayne	4/256.
2430976	Nov, 1947	Dutra	4/256.
2928419	Mar, 1960	Kruse	137/593.
3934280	Jan, 1976	Tancredi	4/255.

Other Refs: 161,571473,3501,116,951

Oct, 1957	SW
Jun, 1968	CH
Jun, 1964	UK

Primary Examiner: Cline, William R.
Assistant Examiner: Spiegel, H. Jay
Attorney: Maxwell; William H.