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April 19, 1949.
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2,467,635
4DRAIN VALVE
Filed> Dec. 17,'1946
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Patented Apr. 19, 1949
2,467,635
UNITED STATES PATENT OFFICE
l
2,467,635
_ `
DRAIN VALVE
Zoltan John Sogorka, Alhambra, Calif.
l Application December 17, 1946, Serial No. 716,686
9 Claims. (Cl. 137-342)
l
,
2
This invention relatesto drain valvesl and more
particularly to a snap-type rubber diaphragm
secured in any conventional manner as by means
of the screws 21 on a shoulder 28 of the insert I4.
valve adapted in closed position to scala drain,
The diaphragm 23 has a circular aperture 30
formed at the center thereof and adjacent the
which drain is operable upon the accumulation
of a predeterminedhydrostatic head to open and 5 edges of the circular aperture 36 the diaphragm
>
has a thickened ring-like seat portion 3| formed
I am aware that it has hitherto been proposed
therein. The circular aperture 3U is provided
to provide drain valves for wash basins, sinks
with a screen 32 secured in the rib 3| in any
and the like, which valves are responsive to a
suitable fashion either by being embedded there
predetermined hydrostatic head to prevent over 10 in or as shown in Figure 3, the enlarged seat
flow. However, the valves hitherto proposed have
portions 3|- may be split from the body portion
been of a complicated structure and costly to
of the diaphragm 23 and screws 33 may be pro
manufacture.
_
vided passing through an opening in the screen
It is accordingly an object of this invention
32, an aperture in the diaphragm 23 and also
to provide a drain valve for sinks, wash basins
threading into suitable threads formed in a lift
and the like which opens'responsive to a pre
ing eye 34.
determined hydrostatic head and thus prevents
The pipe section I5 is provided with a telescop
overflow, and which is simple, durable‘and eco
ing tube 35 carrying on its upper end a plate 36.
nomical of manufacture.
The tube 35 is apertured in a plurality of places
It is another object of this invention to pro 20 adjacent its upper end as at 31.
vide such a drain valve utilizing a snap rubber
The insert I4 has a shoulder 38 formed there
or rubber-like composition diaphragm. Y
in at the upper end of the pipe section I5 and a
It is a further object of this invention to pro
coil spring 39 is provided, the lower end of which
l vide a drain valve of the type disclosed which is
bears upon the shoulder 38 and the upper end of
readily disassembled for cleaning and adjust 25 which supports the underside of the plate 36.
ment.
When it is desired to fill the sink or basin I0,
Further objects and advantages will appear in
the lifting eye 34 is pressed downwardly, thus
the annexed specification, in which:
causing the resilient diaphragm 23 to snap into
Figure 1 is a plan view of a drain provided
the position shown in Figure 3 in which the folds
with a valve of this invention;
30 24 and 25 are downwardly bent. The pressure
Figure 2 is a section taken along the line 2-2
of the resilient diaphragm 23 will cause the seat
of Figure 1 showing the valve in open position;
portion 3| to contact the plate 36, thus closing
Figure 3 is a section similar to Figure 2 show
the drain. The accumulation of hydrostatic
ing the lvalve in closed position; and
head in the basin will serve further to press
Figure 4 is a fragmentarysection through the 35 downwardly upon the diaphragm 23 and urge the
diaphragm at right angles to Figure 2.
p
seat 3| into intimate non-leaking contact with
Referring more particularly to the drawings,
the plate 36. However, upon the accumulation of
there is shown a wash basin or the like indicated
a predetermined hydrostatic head, which head
at I 0 having formed yintegral therewith a de
is determined by the strength of the spring 39 in
pending portion II havingl a shoulder I2 and 40 compression, the vplate 36 will be depressed, al
a second shoulder I3. An insert- I4' is provided
lowing the excess fluid to pass between the plate
resting upon the shoulders I2 and I3 and form
36 and the seat 3 I, through openings 31 and down
ing a drain body. The insert |4 is' provided at
the drain. As the amount of fluid in excess of
its lower end with a pipe section I5 externally
the predetermined hydrostatic head has been
prevent overflowing.
threaded as at I6 in order to receive a conven
tional trap or the like (not shown). The in
sert I4 is also externally threaded as at I'I and a
45 thus drained, the plate 36 will be biased by the
spring 39 back into sealing contact with the seat
3|, as shown in Figure 3. When it is desired to
ring I 8 is threadedly secured thereon compressing
completely drain the basin, the lifting eye 34 is
washers I9 and 20 on either side of the shoulder
lifted upwardly causing the folds 24 and 25 to
I3, thus securing the insert I4 to the basin.
50 reverse as shown in Figure 2, leaving the seat 3|
The insert I4 is provided with a shoulder 2|
spaced substantially from the plate 36 and per
upon which rests a rib 22 of a diaphragm 23. The
mitting the basin to drain.
diaphragm 23 is formed of rubber or a rubber
It will be apparent from the foregoing descrip
like resilient composition and is upwardly folded
tion that the drain of this invention may be read
as at 24 and again downwardly -folded as at 25
when in open position.
_
Referring more particularly to Figure 3, it will
be noted that the diaphragm 23 is adapted to
snap as indicated in a manner reversing the folds
ily disassembled in several ways. If it is desired
to disconnect the drain from the bottom, it suf
iices to remove the ring I8, in which case the
insert I4, having previously been disconnected
from the trap, may be> bodily lifted from the ba
24 and 25 to form downward bends rather than 6.0 sin; If it is desired simply to clean out the drain
upward bends. A ring 26 is provided suitably
itself, the screws k21 may be removed, thus per
2,467,635
mitting the removal of the ring 26, the diaphragm
23 and the plate 36 with its associated tube 35
and spring 39.
The foregoing facility of disassembly, of
course, also provides for ready assembly in manu
facture, but is particularly designed so that the
user may readily clean from the drain any trap
ped foreign matter, thus promoting cleanliness
4
portion into sealing contact with said sealing
member and in another position to support said
seat portion in spaced position from said sealing
member, and said member yieldingly biasing said
sealing member being adapted to be overcome by
a hydrostatic head on said sealing member to
open said sealing member to drain.
. 6. A drain valve comprising: a rubber-like re
silient diaphragm; an aperture in said dia
and sanitation.
A
.
While there has been described what is at pre- 10 phragm; a seat portion on said diaphragm ad
jacent said aperture; a sealing member; a snap
sent considered to be the preferred embodiment
member in said diaphragm adapted to resiliently
of the invention, it is to be understood that var
bias said diaphragm to engage said seat with said
ious changes and modifications can be made
sealing member in one position and to support
therein without departing. from the essence of
the invention, and it is intended to cover herein 15 said diaphragm in spaced relation to said seat in
another position; and resilient means biasing said
all such changes and modifications as come with~
in the true spirit and scope of the appended
claims.
sealing member into sealing contact _with said
diaphragm, said resilient means being movable
away from said diaphragm responsive to a pre
I claim:
determined
hydrostatic head thereon.
20
1. A drain valve comprising: a resilient dia
7. A drain Valve comprising: a rubber-like re
phragm; an aperture in said diaphragm; a seat
silient diaphragm having a seat portion, an aper
portion on said diaphragm adjacent said aper~
ture
in said diaphragm, a sealing member, a re
ture; a sealing member; a snap member in said
diaphragm adapted to resiliently bias said dia
phragm to engage said seat with said sealing
member in one position and to support said dia
silient member yieldingly biasing said sealing
member into sealing contact with said seat por
tion, snap portions in said resilient diaphragm
adapted in one position to bias said seat portion
phragm in spaced relation to said seat in an
into sealing contact with said sealing member and
other position; and resilient means biasing said
in another position to support said seat portion in
sealing member into sealing contact with said
spaced
position from said sealing member.
30
diaphragm, said resilient means being movable
away from said diaphragm responsive to a pre
determined hydrostatic head thereon.
2. A drain valve comprising: a resilient dia
phragm having a seat portion, an aperture in
said diaphragm, a, sealing member, a resilient ‘
member yieldingly biasing said sealing member
into sealing contact with said seat portion, snap
portions in said resilient diaphragm adapted in
one position to bias said seat portion into seal
ing contact with said sealing member and in an
other position to support said seat portion in
spaced position from said sealing member.
3. A drain valve comprising: a resilient dia
phragm having a seat portion, an aperture in
said diaphragm, a screen in said aperture, a seal
8. A drain valve comprising: a rubber-like re
silient diaphragm having a seat portion, an aper
ture in said diaphragm, a screen in said aper
ture, a sealing member, a resilient member yield
ingly biasing said sealing member into sealing
contact with said seat portion, and snap portions
in said resilient diaphragm adapted in one posi
tion to bias said seat portion into sealing contact
with- said sealing member and in another position
to support said seat portion in spaced position
from said sealing member.
9. A drain valve cömprising: a rubber-like re
silient diaphragm having a seat portion, an aper
ture in said diaphragm, a sealing member, a re
silient member yieldingly biasing said sealing
member into sealing contact with said seat por
ing member, a resilient member yieldingly bias
tion, snap portions ín said resilient diaphragm
ing said sealing member into sealing contact with
adapted in one position to bias said seat portion
said seat portion, and snap portions in said re
into
sealing contact with said sealing member and
silient diaphragm adapted in one position to bias 50
in another position to support said seat portion in
said seat portion into sealing contact with said
spaced position from said sealing member, and
sealing member and in another position to sup
said member yieldingly biasing said sealing mem
port said seat portion in spaced position from
ber being adapted to be overcome by a hydro
said sealing member.
4. A drain Valve comprising: a resilient dia 55 static head on said sealing member to open said
sealing member to drain.
phragm having a seat portion, an aperture in
ZOLTAN JOHN SOGORKA.
said diaphragm, a sealing member, a resilient
member yieldingly biasing said sealing member
REFERENCES CITED
into sealing contact with said seat portion, snap
The
following
references are of record in the
portions in said resilient diaphragm adapted in 60
file of this patent:
one position to bias said seat portion into sealing
contact with said sealing member and in another
UNITED STATES PATENTS
position to support said seat portion in spaced
Number
Name
Date
position from said sealing member, and said
Whitman __ ________ __ July 5, 1892
member yieldingly biasing said sealing member 65 478,489
973,609
Abrams __________-__ Oct. 25, 1910
being adapted to be overcome by a hydrostatic
1,102,647
Davis ______________ __ July '7, 1914
head on said sealing member to open said sealing
1,493,774
member to drain.
1,907,299
5, A drain valve comprising: a resilient dia
phragm having a seat portion, an aperture in said 70 2,136,898
diaphragm, a screen in said aperture, a sealing
Dorsey _____' _______ __ May 13, 1924
Kudolla ___’_________ __ May 2, 1933
Thomas _ __________ __ NOV. 15, 1938
FOREIGN PATENTS
'
member, a resilient member yieldingly biasing said
Number
' Country ‘
Date
sealing member into sealing contact with said
107,058
' Great Britain ______ __ June 14, 1917
seat portion, snap portions in said resilient dia
phragm adapted in one position to bias said seat 75
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