Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3497878 A
Publication typeGrant
Publication dateMar 3, 1970
Filing dateOct 19, 1967
Priority dateOct 19, 1967
Publication numberUS 3497878 A, US 3497878A, US-A-3497878, US3497878 A, US3497878A
InventorsEmery William M
Original AssigneeEmery William M
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Bathtub water regulator
US 3497878 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

March 3, 1970 I w. M. EMERY' 3,

BATB'IUB WATER REGULATOR Filed Oct. 19, 1967 lNl/ENTOR United States Patent 3,497,878 BATHTUB WATER REGULATOR William M. Emery, 44 Pittsford Way, New Providence, NJ. Filed Oct. 19, 1967, Ser. No. 676,396 Int. Cl. E03c 1/244 US. Cl. 4-206 5 Claims ABSTRACT OF THE DISCLOSURE A one-piece cup or hat-like device sealable against nonfiat surfaces found adjacent to conventional over-flow bathtub controls and over-flow openings, capable of adjusting the maximum water height in the tub by bodily rotation having sealing means including an outwardly extending concentric seal located at the juncture of the concentric wall of the cup and a rim extending therefrom and responsive to water pressure thereagainst while the device is in a substantially vertical position.

CROSS REFERENCE Reference is made to my Patent 3,221,347 of Dec. 7, 1965, materially improved in my present invention.

BACKGROUND While the device shown in my previous patent functioned satisfactorily under favorable flat surface conditions, its sealing qualities were not effective over a sufficient range of non-flat conditions necessary if it were to have general sale and wide distribution. My present invention solves this problem by providing two concentrically parallel sealing lips feathering outward. It accomplishes the fundamental objects and purposes of my Patent 3,221,347 under practically all conditions sealing itself to both slightly concave and convex surfaces and this seal is not jeopardized by bodily rotation while in use to alter the maximum water height desired in the tub. The construction of the seal of the previous patent was not sufliciently sensitive to render it self-sealing in response to the pressure of the water alone thereagainst under conditions of use, thus involving over-dependence on the suction means.

Other objects and their accomplishment will be obvious from or specifically pointed out in the following specifications, claims and drawings in which:

FIG. 1 is a plan view from the inside or sealing side of one embodiment of my invention,

FIG. 2 is a sectional view taken along line 22 of FIG. 1,

FIG. 3 is a sectional view taken along line 33 of FIG. 1 showing the closure cap positioned over a conventional over-flow and drain control bathtub fixture, and

FIG. 4 is a corner of FIG. 3 modified to show a port in a different location.

FIGS. 1, 2 and 3 show a substantially one-piece molded plastic or rubber over-flow control device of sufficient depth to go over and enclose a conventional over-flow bathtub fixture 12, conventionally positioned in one of the upright walls 13 of the tub. The tub surface adjacent to the fixture 12 is seldom flat; usually irregular, often concave, although the upper edge may be convex. There is no uniformity of surface even with tubs of the same manufacture and there is further variation according to the age and type of tub. The fixture 12 shown includes a handle 14 which controls a drain in the bottom of the tub and a fixture over-flow opening or port 15 in the lower part of the fixture.

My device 10 includes a cylindrical cup-shaped member formed substantially concentrically about a usually substantially horizontal axis 99, the cup-shaped mem- 3,497,878 Patented Mar. 3, 1970 "ice ber having a round end wall 21 and a generally concentric circumferential wall 22 defining a cavity therein adapted to encompass the conventional over-flow fixture 12, a substantially concentric rim 23 extending outward from the edge 24 of cup-shaped member 20 and also normal to axis 99, and a concentric feather edged sealing lip 25 extending angularly outward from the inner edge 24 of cupshaped member 20 and underlying rim 23, space being provided for lip 25 to flatten towards rim 23.

A port 30 is spaced from axis 99 and is located in circumferential wall 22 or end wall 21 or both as shown in FIG. 4. A plurality of separate suction cups 31 operable independently of each other are positioned on the tub side 33 of rim 23 with feathered lips 32. A thin substantially circumferential sealing edge 34 for said rim 23 extends generally normal to axis 99 and is positioned beyond suction cups 31. The outer sealing edge 34 in cooperation with said suction means 31 and said sealing lip 25 completes the sealing of my total device 10 against the non-flat upright tub wall 13 when water in the tub presses thereagainst, the port 30 being selectively indexed about axis 99 to determine the over-flow level of the tub.

Non-apparent obstacles which must be overcome incident to successfully making such a device integrally out of one piece of semiflexible material include the providing of self-adjusting sealing against a non-fiat tub wall which varies from tub-to-tub and in tubs of different ages and manufacture; secondly, the sealing conditions against a non-flat surface will vary as the device is rotated about its axis while in use to change the position of the port to vary the water height; thirdly, the opposed relative stilfv ness of one section such as the circumferential cup wall 22 in a direction parallel to axis 99 and its relative flexibility at right angles thereto when joined to the rim section 23 at edge 24 which section is oppositely relatively stiff at right angles to the axis 99 and relatively flexible to forces paralleling axis 9-9; and fourthly, any distortion due to material, water pressure, suction means or cups in rim 23 could effect the sealing qualities of a onepiece device. To overcome these obstacles the unique features of my present invention such as outwardly extending feathered sealing lips 25 located adjacent to the juncture of wall 22 and rim 23 at circular edge 24 encircled by other concentric seals such as 34 all with their lips feathered outwardly to become self-sealing when water pressure is exerted externally thereagainst are essential.

In this specification and the claims which follow by outwardly I mean in a direction away from axis 9-9.

The most important seal is 25 which by itself or with only the positioning aid of suction means will do a fair job. In fact, once positioned and with the tub filled with water covering the majority of member 20, just the seals 25 and 34 will do a fair job without any suction means. Operating under all conditions as outlined, at least two concentrically parallel seals with outwardy extending feathered edges and intermediate suctions means acting in concert therewith creates a most unique and effective combination which I feel essential for any integral device such as I have described.

Accordingly, I claim:

1. An over-flow control device to adjustably determine the over-flow level within a limited range in a conventional tub which has an over-flow fixture in one of its upright walls, said control device being made substantially in one piece, comprising a substantially cylindrical cup-shaped member formed concentrically about an axis substantially horizontal when in use, said cup-shaped member having a first round end wall and a second circumferential wall defining a cavity therein capable of encompassing said over-flow fixture, a port spaced from said axis in at least one of said first and second walls, and a substantially flat rim extending outwardly from the edge of said concentric cup-shaped member substantially normal to said axis and spaced from said upright wall and a concentric tapered sealing lip tapering angularly outward from the inner edge of said cup-shaped member and of said rim underlying said rim; said sealing lip contacting and providing an annular seal against said one upright tub wall adjacent to said over-flow fixture when water in said tub presses thereagainst, said port being selectively indexable about said axis.

2. A device as set forth in claim 1 wherein there is suction means formed beyond said concentric sealing lip in the tub contacting side of said rim to initially position said concentric sealing lip against said tub wall with the device selectively indexed about its axis.

3. A device as set forth in claim 1 wherein there is a thin substantially circumferential sealing edge for said rim extending substantially nomal to said axis concentrically beyond said concentric sealing lip to supplement the seal thereof.

4. A device as set forth in claim 1 wherein there are in said rim two concentric seals both tapering outwardly, including said sealing lips, a plurality of separate and in dependent suction cup means located therebetween.

5. A device as set forth in claim 2 wherein there is a thin circumferential sealing edge for said rim extending 4 substantially normal to said axis concentrically beyond said concentric sealing lip, said sealing edge in cooperation with said suction means and said sealing lip completing the seal of said total device against said one upright tub wall, said port being selectively indexed about said axis.

References Cited UNITED STATES PATENTS 328,354 10/1885 Stears 4206 1,235,387 7/1917 Serper 4206 1,262,545 4/ 1918 Mueller 4-206 1,281,222 10/ 1918 Stepanchak 4-206 1,531,322 3/1925 Waechter 4206 2,398,921 4/1946 Cook 4206 3,221,347 12/1965 Emery 4206 FOREIGN PATENTS 762,406 1/ 1934 France.

351,379 2/ 1961 Switzerland.

LAVERNE D. GEIGER, Primary Examiner D. B. MASSENBERG, Assistant Examiner

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US328354 *Jan 21, 1885Oct 13, 1885 steaes
US1235387 *Jan 30, 1917Jul 31, 1917Jacob SerperBath-tub overflow-shield.
US1262545 *Jan 2, 1918Apr 9, 1918Adolf Edward MuellerAdjustable overflow attachment.
US1281222 *Apr 25, 1917Oct 8, 1918George StepanchakFitting for bath-tubs.
US1531322 *Jan 26, 1924Mar 31, 1925Hermann Waechter CharlesAttachment for plumbing fixtures
US2398921 *Oct 30, 1944Apr 23, 1946Cook Jay ELiquid level control
US3221347 *Oct 7, 1964Dec 7, 1965Emery William MBath tub over-flows
CH351379A * Title not available
FR762406A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3859676 *Feb 20, 1974Jan 14, 1975Kato MikioBathtub or the like drain control and overflow regulator
US3927428 *Jun 26, 1975Dec 23, 1975Guldin MaxwellAdjustable bathtub overflow liquid control
US4135260 *Mar 28, 1977Jan 23, 1979Gresh Peter PRinse sink skimmer
US5025509 *Apr 25, 1990Jun 25, 1991Holt Peter KOverflow level controller for a bathtub
US5228153 *Oct 8, 1991Jul 20, 1993Kel-Gar, Inc.Protective cover for a drain handle fixture
US6216288Oct 14, 1999Apr 17, 2001Barry BernauSeal for bathtub overflow drain
US6895610 *Mar 21, 2003May 24, 2005Richard C. OlsonPortable bathtub water-level control device
US6988282 *May 25, 2004Jan 24, 2006Triodyne Safety Systems, LlcDrain cover
US9181720Oct 31, 2012Nov 10, 2015Triodyne Safety Systems, L.L.C.Anti-evisceration ring
US9228368Oct 31, 2012Jan 5, 2016Triodyne Safety Systems, L.L.C.Anti-limb entrapment insert
US20030196261 *Mar 21, 2003Oct 23, 2003Olson Richard C.Portable bathtub water-level control device
US20040210999 *May 25, 2004Oct 28, 2004Barnett Ralph LipseyDrain cover
US20090249542 *Apr 4, 2008Oct 8, 2009Gary UhlOverflow drain
Classifications
U.S. Classification4/694
International ClassificationE03C1/244, E03C1/12
Cooperative ClassificationE03C1/244
European ClassificationE03C1/244