Title: Standpipe adapter for sink drains of varied diameter

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Claims: We claim:

1. An adapter for sealed engagement of a radially movable standpipe with sink bottom drains of varied diameter cylinder opening disposed on fixed vertical axes, and including; a conical and downwardly tapered tubular base element of rubber-like material with a top at least smaller and a bottom substantially smaller in diameter than the cylinder opening of the drain into which it is inserted and with a flow passage opening therethrough, an upwardly open receptacle in a boss integral with and projecting upwardly from the top of the base to move therewith and in open communication with the flow passage, a tubular standpipe received in the receptacle and with a passage continuation of the base passage, an uppermost seal comprised of a flexible peripheral flange integral with and projecting radially from the top of the base element to overlie and supportably engage upon a surrounding area of the sink bottom, and a lowermost seal comprised of a flexible and radially depressible peripheral flange integral with and projecting radially from the bottom of the base element and having continuous circumferential engagement within the cylinder opening when axially aligned with the said cylinder opening and also when axially misaligned therewith and thereby permitting lateral radial movement of the standpipe relative to the sink bottom drain without breaking sealed engagement.

2. The standpipe adapter as set forth in claim 1 wherein the uppermost seal is a downwardly flared flange axially depressible for hydrostatic engagement upon said area of the sink bottom.

3. The standpipe adapter as set forth in claim 1 wherein the uppermost seal is a downwardly flared flange with a fexible peripheral lip axially depressible for hydrostatic engagement upon said area of the sink bottom.

4. The standpipe adapter as set forth in claim 1 wherein the lowermost seal is upwardly cupped and radially expansible for hydrostatic engagement within the cylinder opening of the sink drain.

5. The standpipe adapter as set forth in claim 1 wherein the lowermost seal is an upwardly flared flange radially expansible for hydrostatic engagement within the cylinder opening of the sink drain.

6. The standpipe adapter as set forth in claim 1 wherein the lowermost seal is an upwardly flared flange with a flexible peripheral lip radially expansible for hydrostatic engagement within the cylinder opening of the sink drain.

7. The standpipe adapter as set forth in claim 1 wherein the uppermost seal is a downwardly flared flange axially depressible for hydrostatic engagement upon said area of the sink bottom, and wherein the lowermost seal is an upwardly flared flange radially expansible for hydrostatic engagement within the cylinder opening of the sink drain.

8. The standpipe adapter as set forth in claim 1 wherein the uppermost seal is a downwardly flared flange with a flexible peripheral lip axially depressible for hydrostatic engagement upon said area of the sink bottom, and wherein the lowermost seal is an upwardly flared flange with a flexible peripheral lip radially expansible for hydrostatic engagement within the cylinder opening of the sink drain.

Other info:

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.