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Патент USA US3031694

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May 1, 1962
E. J. SCHUH
3,031,684
FLUSH TANK LINER
Filed May 27, 1960
2 Sheets-Sheet 1
“1.1
I8
Fig. /
f
46
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N
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Edward J. Schulz
INVENTOR.
' BY WWW 3M3”:
May 1, 1962
E. J. SCHUH
‘
3,031,684
FLUSH TANK LINER
Filed May 27, 1960
2 Shee’cs—Sheet 2
Fig. 3
Edward J. Schuh
1N VEN TOR.
,.
States
ice ,
3,@3l,ti84
Patented May 1, 1962
1
2
3,031,684
properly positioned openings therein to accommodate the
plumbing or pipes. For example, in the bottom where
two pipe openings are provided, small criss-cross V
FLUSH TANK LINER
Edward J. Schuh, P.O. Box 694, Grand Junction, Colo.
Filed May 27, 196i), Ser. No. 32,306
1 Claim. (Cl. 4-—68)
The present invention relates to a liner which is ex
pressly, but not necessarily, designed and effectually
adapted to be used in a toilet ?ush tank and which consti
tutes the container or reservoir for the tank water and
which performs in a manner similar to analogous prior
art liners.
Persons conversant with the state of the art to which
the instant invention relates are aware that there has
shaped ribs are utilized in a manner to satisfactorily re
inforce the material at these otherwise vulnerable points
with the result that clamping nuts and gaskets can be
relied upon to provide effective ?uid-tight joints.
These together with other objects and advantages
which will become subsequently apparent reside in the
details of construction and operation as more fully here
inafter described and claimed, reference being had to
the accompanying drawings forming a part hereof,
wherein like numerals refer to like parts throughout, and
in which:
long existed a problem of satisfactorily eliminating or 15 FIG. 1 is a view in perspective of a conventional ilush
minimizing the accumulation of dripping condensate on
tank with portions thereof ‘broken away to expose por
exterior surfaces of closed toilet tanks. Constant tem
tions of the liner or lining constructed in accordanw with
perature changes in the bathroom, in which the tank is
the invention.
usually installed, results in the tank sweating and dripping
FIG. 2 is a horizontal section on the plane of the
water runs down on the ‘bowl, seat and floor. However, 20 line 2~2 of FIG. 1 looking in the direction of the arrows.
the problem has not gone unchallenged. Like this appli—
FIG. 3 is a vertical section on the vertical line 3-3
cant, other inventors motivated by the incentive to do
something practical about the situation, ‘have, at least in
many instances, come to the conclusion, by inserting a
of FIG. 1.
FIG. 4 is a view in perspective of the liner per se.
In the drawings, the toilet bowl, which is conventional,
proper water container and liner within the water space 25 is denoted by the numeral 6 and the ?ush tmk by the
at the ?ush tank, satisfactory results are assured. It
numeral 8, said tank embodying the usual front and
follows that it is an objective in the instant matter to
.back walls 10 and 12 and transverse end walls 14 and
adopt and use a simple, practical and an economical
bottom wall (FIG. 3) 16. The lid or cover is denoted at
liner which is preferably constructed of commercial plas
18.
tic material and to so» construct the same that it will
understand this invention.
better and more satisfactorily accomplish the results
herein under advisement.
With a view toward advancing the art, the liner herein
proposed for adoption and use is preferably made from a
proper grade of thin but sturdy commercial plastics, the 35
exterior surfaces having cooperating spaced V-shaped
ribs. The ribs are of limited V-shaped cross-section and
the vertices or ridges are designed for minimal but e?ec
tive sealing contact with interior surfaces of the tank.
In this manner dead-air spaces are provided which serve
to perfect satisfactory insulating results.
Further, novelty is predicated on the multiple ribbed
exterior surface construction described and wherein, in
addition, the upper edges of the four walls of the liner
The plumbing need not be in detail in order to
As already mentioned, the
invention has to do with the readily insertable plastic or
equivalent liner and container denoted by the numeral
20. This liner comprises: (FIG. 4) a bottom wall 22,
longitudinal side walls 24 and end walls 26. This liner is
fashioned from suitable commercial plastics, which while
thin, is nevertheless sturdy and may be turned out in any
desired color. The vertical sides and ends are provided
with spaced parallel spacing, adapting and dead air space
forming ribs 28. These ribs are \.'-shaped in cross-section
as shown in FIG. 2 and the cross-section is limited and
the apical edges or ridges 36 are such that they are
intended to contact the interior surfaces of the tank walls
in the manner shown, for example, in FIGS. 2 and 3 in
particular. By accurately making the liner with the ribs
have outstanding lateral ?anges which join together in 45 and ?tting it with exactitude it will be evident that e?icient
forming an endless ?ange, inner portions of the ?ange
dead air spaces are provided. For further insulation
cooperating with the ribs in de?ning satisfactory dead
needs, the bottom 22 is provided with ‘ti-shaped cross ribs
air pockets and the extending marginal edge portion of
32 and longitudinal intersecting ribs 34 providing a grid
the over-all ?ange providing a sealing lip which rests
like bottom, the ribs which function in the same manner
atop the walls of the ?ush tank and which may be ad
hesively secured and, in this manner, de?ne a highly satis
factory interiorly insulated ?ush tank with the result that
sweating and Water drippage is reduced to an acceptable
minimum.
Brie?y summarized, the preferred construction may be
said to rely upon four featured advantages.
(1) The liner herein revealed is such in construction
that it is susceptible of being built of relatively thin plas
as illustrated in FIG. 3. The pipe openings are denoted
at ‘36 and 38 and each construction is the same in that
intersecting ribs and requisite in number closely related
are provided. These ribs may be referred to by numerals
4t) and 42 in FIG. 4 wherein a reinforced honeycomb
construction is provided. The collar 44 in FIG. 4 may
be utilized for the obvious purpose illustrated in H6. 2.
With respect now to the ?ange means at the top, each
wall is provided with a ?ange and the ?anges are joined
together to provide an endless ?ange which may be
tic material which is rigid enough to support the water
therein with the only contact with the outside container 60 referred to generally by the numeral 46. The inner ?ange
through the medium of external V-shaped ribs running
portions 4% bridge the adjacent ends of the ribs and
parallel around the surface of the liner.
provide an effective dead air space or seal. The lip por
(2) Because the construction is that herein disclosed,
tion 50, which projects beyond the vertices of the ribs,
it lends itself to production from moldable commercial
rests atop the brim of the box or tank as shown in FIG. 3
plastics with requisite accuracy and ?ts with requisite 65 where it is shown as cemented in place as at 52.
nicety within the receptacle portion of the ?ush tank.
The manner of installing the liner is quite clear and
;( 3) By reason of the fact that the apical edges of the
the features and advantages desired would appear to be
ribs contact interior surfaces of the tank, and ‘because the
self-evident.
marginal lip, rovided by the top endless ?ange is sealed
The foregoing is considered as illustrative only of the
by cement, it will be evident that effective dead~air spaces 70 principles of the invention. Further, since numerous
with desired insulating results are bad.
modi?cations and changes will readily occur to those
(4) Finally, this liner is so constructed that it has
skilled in the art, it is not desired to limit the invention
8,031,684
3
6.
to the exact construction and operation shown and de
scribed, and accordingly all ‘suitable modi?cations and
equivalents may be resorted to, falling within the scope
having laterally disposed outstanding ?anges the outer
of the invention as claimed.
What is claimed as new is as follows:
to be cemented to the tank, and ribs on the exterior sur
marginal edge portions of which are adapted to overlie
the upper edges of the Walls of the tank and are adapted
faces of the front, rear and end Walls, said ribs being
A readily insertable liner for the receptacle portion
‘ii-shaped in cross-section with the apical portions adapted
of a ?ush tank, said liner made of moldable plastic
to contact interior surfaces of the tank walls, said ribs
extending from the plane of the bottom Wall up to and
having their upper ends integrally joined with the under
wall, vertical front, rear and end walls adapted When in 10 neath surfaces of the ?anges and said ?anges being of a
cross-section appreciably greater than the cross-section of
use to ‘cooperate in spaced parallelism with the bottom,
material and corresponding in shape to the receptacle
portion of the tank and embodying a horizontal bottom
front, rear and end Walls of the ?ush tank, the bottom
Wall of the liner having crossing longitudinal and trans
verse depending V-shaped ribs, also having pipe-accom
modating openings at prescribed places, the portions of
the bottom wall immediately surrounding said openings
being reinforced by cooperating rigidifying ribs smaller
in dimension than the ?rst-named ribs, the upper edge
portions of the front, rear and end walls of the linear
said last-named ribs.
7
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,006,572
Lindenberg __________ __ Oct. 14, 1911
2,395,606
Zinkil et al. __________ __ Feb. 26, 1946
Breny _______________ __ May 6, 1958
2,832,964
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