U.S. patent application number 10/843407 was filed with the patent office on 2005-01-13 for toilet.
Invention is credited to Buchanan, Thomas John.
Application Number | 20050005348 10/843407 |
Document ID | / |
Family ID | 9957903 |
Filed Date | 2005-01-13 |
United States Patent
Application |
20050005348 |
Kind Code |
A1 |
Buchanan, Thomas John |
January 13, 2005 |
Toilet
Abstract
The invention relates to a toilet having a raised lip 18 and
elongate gully 20, reducing the risk of splashing by male users and
hence improving the hygiene of the toilet, A number of other
features may also contribute to the hygiene of the toilet,
including handles 40, and lips on the seat 20 and lid 30.
Inventors: |
Buchanan, Thomas John;
(London, GB) |
Correspondence
Address: |
BARNES & THORNBURG
P.O. BOX 2786
CHICAGO
IL
60690-2786
US
|
Family ID: |
9957903 |
Appl. No.: |
10/843407 |
Filed: |
May 11, 2004 |
Current U.S.
Class: |
4/420 |
Current CPC
Class: |
E03D 11/04 20130101 |
Class at
Publication: |
004/420 |
International
Class: |
A47K 004/00 |
Foreign Application Data
Date |
Code |
Application Number |
May 12, 2003 |
GB |
GB0310878.4 |
Feb 4, 2004 |
GB |
GB0420479.0 |
Claims
1. A toilet, comprising: a bowl having a front, rear and sides and
a rim extending around an upper surface of the bowl, the rim
defining a water channel therein for channelling water to flush the
toilet; a water inlet in the bowl at the rear of the bowl connected
to the water channel for accepting water for flushing the toilet;
wherein the rim has a raised lip at the front of the bowl; and the
front of the bowl is extended forwards under the raised lip to
define a gully extending on the inside of the bowl forwards from
the front of the rim by at least 10 cm for reducing splashing.
2. A toilet according to claim 1 comprising a plurality of openings
in the rim connecting the water channel and the interior of the
bowl spaced around the rim for channeling flushing water into the
bowl to flush the toilet.
3. A toilet according to claim 1 ether comprising a seat hinged to
the rear of the toilet and extending when lowered along the rear
and sides of the toilet but not being closed at the front,
4. A toilet according to claim 3 wherein the rear of the seat is at
least 50cm behind the front of the seat.
5. A toilet according to claim 3 wherein the seat has seat lip
extending around the outer edge of the seat and a seat support
section for supporting the seat on the bowl, the seat support
section being arranged around the edge of the seat extending
inwardly from the seat lip.
6. A toilet according to claim 3 further comprising a lid hinged to
the seat or bowl,
7. A toilet according to claim 6 further comprising a lid lip
around the outer edge of the lid and a lid support extending
inwardly of the lid lip for supporting the lid on the seat.
8. A toilet according to claim 6 further comprising handles
integrally formed in the outside edge of the seat and the outside
edge of the lid.
9. A toilet according to claim 1 wherein the rim is substantially
horizontal along the sides and rear of the bowl.
10. A toilet according to claim 1 wherein the distance from the lip
to the rear of the rim is at least 50 cm.
11. A toilet according to claim 1 further comprising at least four
bolt holes around the base of the toilet for fixing the toilet to
the ground.
Description
[0001] The invention relates to a toilet bowl and to a toilet
incorporating the toilet bowl.
[0002] Conventional flush toilets are widely used and typically
incorporate a bowl, a hinged seat and a lid,
[0003] Existing toilets are however not always suitable for all
users. One problem is for disabled male users who may need to sit
down to urinate and who may have difficulty in directing urine into
the bowl without splashback. Splashed urine can cause significant
hygiene problems if it is not cleared up immediately. The same may
apply to non-disabled male users who urinate while sitting down to
defecate.
[0004] A number of modifications have been proposed to such
existing toilets, including in particular the toilet described in
U.S. Pat. No. 6,085,365 to Chiang, This describes a toilet in which
a conventional toilet bowl has a urine protector at the front end
together with a shallow water portion and a seat and lid. The
function of the urine protector is said to be that the urine of the
user will not splash out of the bowl.
[0005] According to the invention there is provided a toilet,
comprising:
[0006] a bowl having a front, rear and sides and a rim extending
around an upper surface of the bowl, the rim defining a water
channel therein for channelling water to flush the toilet;
[0007] a water inlet in the bowl at the rear of the bowl connected
to the water channel for accepting water for flushing the
toilet;
[0008] wherein the rim has a raised lip at the front of the bowl;
and
[0009] the front of the bowl is extended forwards from the raised
lip to define a gully extending on the inside of the bowl forwards
from the front of the lip by at least 10 cm to reduce
splashing.
[0010] When a user sits on the toilet the raised lip helps ensure
that urine flows into the bowl rather than spraying on the floor or
rim. The distance between the lip and the front of the front of the
gully helps reduce splashback. If instead the distance was shorter,
urine could hit the front of the toilet and rebound onto the user,
the user's clothing or the floor, creating a hygiene problem,
especially when used by males with semi-erect penises. This
elongated gully portion thus improves the hygiene of the
toilet.
[0011] Although 10 cm may be adequate in some cases, the precise
distance between the lip and the front of the gully can be varied
as required. In-preferred embodiments the distance may be 15 cm or
more or even 20 cm or more,
[0012] Further, when a male user needs to direct his penis forward
when seated to use the toilet the shape of the toilet according to
the invention reduces the risk of splash-back onto the user's
hand.
[0013] The toilet is also beneficial for female users since again
the risk of splashing is reduced.
[0014] Preferably, the toilet bowl is elongated compared with a
normal toilet bowl so that when a man sits on the toilet he can
urinate forwards and defecate backwards without the risk of faeces
sticking to the rim of the toilet. Thus, in preferred embodiments
the toilet bowl may have an upper opening measured from the lip to
the rear of the rim of at least 50 cm, preferably 60 cm and further
preferably 70 cm.
[0015] This elongate shape reduces the risk of a user's hand coming
into contact with the seat when holding the penis to direct the
flow of urine when seated, since the user can sit far enough back
from the lip and still have enough room behind him to defecate.
[0016] The same applies to female users who will also be able to
leave a large clear space behind them. Thus, the toilet benefits
both sexes.
[0017] There may further be a seat hinged to the rear of the toilet
and extending when lowered along the rear and sides of the toilet
but not being closed at the front. By having the seat open at the
front, in a horseshoe configuration, problems of urine hitting the
front of the seat are avoided, thereby still fiber increasing the
hygiene of the system.
[0018] The rear of the seat may be at least 50cm behind the front
of the seat to allow sufficient room at the rear of the seat for
defecation,
[0019] In preferred embodiments the water channel is continuous
around the complete rim.
[0020] Preferably, the toilet has a plurality of openings in the
rim connecting the water channel and the interior of the bowl
spaced around the rim for channeling flushing water into the bowl
to flush the toilet. The use of a rim having a raised lip causes
problems for the conventional flushing mechanism which requires
water to flow around the interior of the rim which is continuously
open to the bowl at its lower edge. It would be difficult to
achieve flow of water around the lip in such a system. However, by
providing a closed channel in the rim the water can be guided all
the way around the rim, including around the lip, thereby achieving
efficient flushing even in this system with a raised lip.
[0021] The seat may have a seat lip extending around the outer edge
of the seat and a seat support section for supporting the seat on
the bowl, the seat support section being arranged around the edge
of the seat extending inwardly from the seat lip. Note that the
term "seat" in the expression "seat lip" is intended as a label to
distinguish the lip in the seat from other lips described in the
specification without requiring any particular form of the lip.
[0022] A lid may be hinged to the seat or bowl. There may be a lid
ip around the outer edge of the lid and a lid support extending
inwardly of the lid lip for supporting the lid on the seat. Again
the term "lid" in "lid lip" is intended as a label.
[0023] The toilet may further include handles integrally formed in
the outside edge of the seat and/or the outside edge of the lid.
The handles are preferably contoured into the seat and/or lid using
smooth contours. The handles allow other users to raise and lower
the toilet seat without their hands coming into contact with any
potentially misdirected urine,
[0024] The rim may be substantially horizontal along the sides and
rear of the bowl.
[0025] In some arrangements, the bowl is not as rounded as in a
conventional toilet but has sides which are straighter, in
embodiments substantially straight, to achieve the elongate shape
preferred.
[0026] The toilet according to the invention may thus be considered
to be hygienic and luxurious, and may accordingly be named "the
hygiene luxury system".
[0027] A specific example of the invention will now be described,
purely by way of example, with reference to the accompanying
drawings in which:
[0028] FIG. 1 is a section through a toilet according to the
invention along a front-rear axis,
[0029] FIG. 2 is a section through the toilet of FIG. 1 along a
side-side axis;
[0030] FIG. 3 is a top view of the toilet of FIG. 1 with the lid
up; and
[0031] FIG. 4 is a view from under the seat of the toilet of FIG.
1.
[0032] The drawings are schematic and not to scale. Like components
are indicated by like reference numerals in the different
Figures.
[0033] Referring to FIGS. 1 to 3, a toilet includes a shaped toilet
bowl 2 having a front 4, and rear 6. A conventional sewer outlet
connection 8 is provided at the rear. Four bolt holes 10 are
provided in the base 12 of the toilet for fixing the toilet to the
ground. Note that as will be appreciated by the skilled person
different bolt fixing arrangements and sewer outlets 8 may be
provided if required to fit with the plumbing or other arrangements
at a site. Note however that there is an advantage in using a four
bolt system for fixing the toilet, rather than a two bolt system.
The toilet according to the invention is elongate, especially at
the front, and the four bolt system reduces the risk that the
toilet may tip over during installation and provides a strong and
firm fixing of the toilet for long term reliability.
[0034] The toilet bowl has a rim 14 extending all around the upper
surface of the bowl, the rim 14 having a water channel 16 within it
extending around the complete rim 14. The rim 14 is raised at the
front to form a lip 18 at the front of the rim and is substantially
flat over the rear and sides of the rim. A spout or gully 20 is
formed in the interior of the bowl under lip 18, the interior of
the spout or gully 20 extending towards the front 4 of the bowl by
a distance d from the front of the rim 14, the distance d being in
the example 15 cm although this may vary depending on the exact
shape of toilet required. In the example the spout or gully 20 has
a rounded interior form. The length of the rim 14 is also longer
than a conventional toilet.
[0035] The channel 16 is connected to a water inlet 38 at the rear
of the rim 14 that may in turn be connected to a cistern or other
water supply for flushing. The channel 16 is closed, not open to
the bowl, and has a plurality of openings 36 allowing water to pass
from the channel 16 into the bowl 2. The openings 36 are spaced
around the whole rim. This arrangement allows flush water to reach
the lip 18 of the rim. Note that the channels 36 may be oriented to
direct water in the direction required, which may be used in
particular to direct some water to clean the spout or gully 20 by
providing openings in the lip of the rim directed towards the spout
or gully 20.
[0036] A horseshoe-shaped seat 22 is formed over the rear and sides
of the rim 14. The seat is hinged to the toilet bowl by hinges 26
attached to the bowl in a manner known to those skilled in the art,
for example by bolts. The seat 22 can be raised or lowered and is
shown in the lowered position. The seat 22 has a lip 24 extending
downwardly from the outer side edges of the seat, as well as from
the outer front edge. Seat support section 25 is provided inside
the lip, for supporting the seat 20. Seat support section 25 may be
made, for example, of resilient plastics, and may be fixed to the
seat by butting the seat support section 25 against the lip 24 and
fixing it, for example with adhesives, as a gasket can be. The
support section 25 takes the place of the plurality of small
supports used in conventional toilets.
[0037] As shown in FIG. 4, the seat support section 25 includes a
plurality of ribs spaced around the horse-shoe shaped seat 22
extending inwardly from the lip 24 at outer edge of the seat
22.
[0038] A lid 30 is provided, hinged to the bowl by piano hinges 34
and can be raised or lowered, The lid 30 is shown in the lowered
position The edges of the lid at the side and rear have a lip 32
that overlaps the seat 20 when the lid is down. A lid support 33 is
attached in a lice manner to the seat support 25 to support the lid
on the seat. The lid support 33 includes a plurality of ribs
extending inwardly from the lip 32, the ribs being spaced around
the outer periphery of the lid 30. That is to say, the lid support
33 has a like shape to the seat support 25.
[0039] Handles 40 integrally formed ill the seat 20 and lid 30 are
provided to allow the seat and lid to be lifted. Handles 40 are
shown dotted in FIG. 4 since the handles 40 are not visible from
the underside of the seat.
[0040] It will be appreciated that the embodiment described is only
a single example of the invention and variation to meet local needs
and requirements are possible. For example, the positioning of the
inlet and outlet may be varied, as well as the shape of the bowl
and size, orientation and form of the bowl. In some markets, for
example, a horizontal shelf in the bowl is expected.
[0041] The bowl may be manufactured in any convenient way, in
ceramics, plastics, or indeed any other material, as will be
appreciated by those skilled in the art of manufacturing
toilets.
* * * * *