GB1573988A - Water closet - Google Patents

Description

(54) WATER CLOSET (71) We, POLYMATE INDUSTRIES (M) SDN BERHAD, a Malaysian Corporate Body, of Lot 10665, Jalan Kuchai Lama, Kuala Lumpur, Malaysia, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention relates to water closets in general and in particular to a water closet bowl made of plastics materials, expecially polypropylene. Compared with conventional ceramic water closets, a water closet bowl fabricated from synthetic resin material may be strong and resistant to fracture, economic to manufacture, and light in weight making it easy to transport, handle and install with attendant savings in costs.

According to the present invention there is provided a water closet bowl comprising a body part and a rim part each formed as a unitary plastics moulding, the rim part being annular and having substantially the shape of an inverted U in cross-section, the depending outer limb of the U hving substantially the same thickness as the body at an upper edge thereof and being fixedly secured in water-tight manner to said upper edge of the body by means including a tongue and groove joint whereby the inner and outer surfaces of the bowl are smooth across the join between the rim and body parts and the rim part defines an annular channel opening downwardly into the body part, and a flushing water supply connection being defined between the rim and body parts at the rear of the bowl and being shaped to direct water in opposite directions around the annular channel.

A preferred water closet bowl embodying the invention is made from two polypropylene mouldings.

Forming the water closet bowl from the two separately produced mouldings has the advantage that the moulds and moulding process can be simplified quite considerably.

The mouldings may be secured together by an adhesive bonding agent or by welding.

A very clean joint between the mouldings can be achieved and the inner and outer surfaces are smooth across the join.

The presently preferred water closet bowl embodying the invention will now be described in more detail by way of example with reference to the accompanying drawings, in which: Figure 1 is a partially cut-away side view of the water closet bowl; Figure 2 is a top plan view also partly cut-away; Figure 3 is a rear view; Figure 4 is an exploded vertical crosssection; and Figures 5 and 6 are sections taken along the lines C-C and D-D of Figures 1 and 2 respectively.

The illustrated water closet bowl is of standard general configeration and appearance. The closet bowl is fabricated from two separately moulded parts 1, 2, the first of which is a lower part and forms the body of the closet and the other forms the upper rim. Both mouldings 1, 2 are made of plastics material which is preferably polypropylene. The body part 1 includes the outlet 3 which in use is connected to the usual U or S-bend outlet pipe fitting. The part 1 also defines half of a water inlet union 4 which is connected in usual manner to a cistern for the supply of flushing water, the other half of the union being formed on the other part 2. The part 1 is so shaped that a major portion of the body projects forwardly in cantilever fashion from the outlet 3. The mouldings 1, 2 are joined together along a join line 5 which lies in a horizontal plane.

The upper edge of the body part 1 is formed with a continuous upstanding tongue 6 which is slotted into a-groove formed in the down wardly directed edge 7 of rim part 2. The joint is made secure and permanent by adhesive which is applied to the joining edges of the mouldings before they are fitted together.

The rim moulding 2 is annular and of substantially inverted U-shaped cross-section, the inner limb 8 of the U forming a lip which is directed downwardly and inwardly into the bowl. The mouldings 1, 2 combine to define a channel 9 extending around the upper periphery of the bowl for distributing flushing water through the union 4 around the bowl. The channel 9 has a restricted opening 10 due to a shoulder 11 formed on moulding 1 near its upper edge. The flushing water enters the channel 9 from union 4 through relatively diverging openings 12 located at the extremities of a T-shaped passage 13. The upper openings 12 are arranged to direct the water into and around the channel 9 whereas the lower opening 12 directs the water downwardly directly into the bowl body.

Making the water closet from two plastics mouldings 1, 2 as described simplifies manufacture as the mouldings are not complicated in shape and can be formed without difficulty. Close tolerances can be maintained so that a good water-proof joint can be obtained between the two mouldings. Other advantages of the described water closet are that it has a light weight which aids handling and installation, it is strong, may have a long useful lifetime, is resistant to corrosion and unaffected by fungi or bacteria, and is inexpensive.

WHAT WE CLAIM IS: 1. A water closet bowl comprising a body part and a rim part each formed as a unitary plastics moulding, the rim part being annular and having substantially the shape of an inverted U in cross-section, the depending outer limb of the U having substantially the same thickness as the body at an upper edge thereof and being fixedly secured in watertight manner to said upper edge of the body by means including a tongue and groove joint whereby the inner and outer surfaces of the bowl are smooth across the join between the rim and body parts and the rim part defines an annular channel opening downwardly into the body part, and a flushing water supply connection being defined between the rim and body parts at the rear of the bowl and being shaped to direct water in opposite directions around the annular channel.

2. A water closet bowl according to claim 1 or 2, wherein the mouldings are bonded together by adhesive.

3. A water closet bowl according to claim 1 or 2 wherein the mouldings are welded together.

4. A water closet bowl according to any preceding claim wherein the mouldings are made of polypropylene.

5. A water closet bowl substantially as herein described with reference to the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. wardly directed edge 7 of rim part 2. The joint is made secure and permanent by adhesive which is applied to the joining edges of the mouldings before they are fitted together. The rim moulding 2 is annular and of substantially inverted U-shaped cross-section, the inner limb 8 of the U forming a lip which is directed downwardly and inwardly into the bowl. The mouldings 1, 2 combine to define a channel 9 extending around the upper periphery of the bowl for distributing flushing water through the union 4 around the bowl. The channel 9 has a restricted opening 10 due to a shoulder 11 formed on moulding 1 near its upper edge. The flushing water enters the channel 9 from union 4 through relatively diverging openings 12 located at the extremities of a T-shaped passage 13. The upper openings 12 are arranged to direct the water into and around the channel 9 whereas the lower opening 12 directs the water downwardly directly into the bowl body. Making the water closet from two plastics mouldings 1, 2 as described simplifies manufacture as the mouldings are not complicated in shape and can be formed without difficulty. Close tolerances can be maintained so that a good water-proof joint can be obtained between the two mouldings. Other advantages of the described water closet are that it has a light weight which aids handling and installation, it is strong, may have a long useful lifetime, is resistant to corrosion and unaffected by fungi or bacteria, and is inexpensive. WHAT WE CLAIM IS:

1. A water closet bowl comprising a body part and a rim part each formed as a unitary plastics moulding, the rim part being annular and having substantially the shape of an inverted U in cross-section, the depending outer limb of the U having substantially the same thickness as the body at an upper edge thereof and being fixedly secured in watertight manner to said upper edge of the body by means including a tongue and groove joint whereby the inner and outer surfaces of the bowl are smooth across the join between the rim and body parts and the rim part defines an annular channel opening downwardly into the body part, and a flushing water supply connection being defined between the rim and body parts at the rear of the bowl and being shaped to direct water in opposite directions around the annular channel.

2. A water closet bowl according to claim 1 or 2, wherein the mouldings are bonded together by adhesive.

3. A water closet bowl according to claim 1 or 2 wherein the mouldings are welded together.

4. A water closet bowl according to any preceding claim wherein the mouldings are made of polypropylene.

5. A water closet bowl substantially as herein described with reference to the accompanying drawings.