GB2490523A

GB2490523A - Plastic toilet

Info

Publication number: GB2490523A
Application number: GB1107409.3A
Authority: GB
Inventors: Richard Philpot
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-04
Filing date: 2011-05-04
Publication date: 2012-11-07
Anticipated expiration: 2031-05-04
Also published as: GB2490523B; GB201107409D0

Abstract

The invention discloses a method for producing a plastic toilet formed from two halves. The toilet comprises a pan 1 and waste pipe unit 3, which are preferably rotationally moulded from a plastic material, typically LLDPE, (Low Density Polyethylene resin) and a support base 2, typically manufactured from the same material, LLDPE. The assembly is joined together by placing the toilet pan1 onto the support base 2 and, via access flutes 4 is secured to a platform, which is inside an individual, portable, plastic toilet housing. The toilet may be attached to an external vacuum extraction system via the toilet pan and waste pipe unit.

Description

Plastic toilet The present invention relates generally to the manufacture of toilets and more particularly to the manufacture of portable toilets contained in individual booths or series of booths or kiosks. In a conventional portable toilet system, such as a portable toilet structure commonly known as a PORTA-JOHN, the toilet seat is mounted directly on top of a holding sump.

Human waste drops directly into the sump by means of gravity, where it is collected for subsequent purification and treatment. While such toilet systems are simple in design, and easy to install and operate at construction sites, roadside rest stops, popular outdoor events, etc., they are frequently unsanitary and subject to offensive odours, and usually do not provide a wash sink. For a typical person, they are used as a last resort. It is well-known that there are alternatives to traditional gravity and pump solutions in order to make the use of such toilets a more attractive proposition.

At least one company manufactures an organic solution that deodorizes and sanitizes in the same way as the commonly used chemical solutions and there are vacuum solutions which use less water, smaller lighter pipes, at lower cost with less frequent pump-outs and are easily retro fitted. It is commonly known that a vacuum is maintained in such a toilet system at all times. When the toilet is flushed (by a foot pedal or a push of a button) the vacuum energy stored in the system is released. The bowl is instantly cleared and the waste is moved down the vacuum pipe at over 2 metres per second into a vacuum transfer tank. The change of pressure in the vacuum tank causes the integral pressure switch to activate the vacuum pump. After the flush lever is released, the vacuum pump continues to run until the vacuum level is recharged in the system. This process will occur each time the toilet is flushed until the vacuum transfer tank is full at which point the transfer tank will expel the waste, into either a holding tank or directly into a mains sewerage system. It is proposed to use such a vacuum system for the present invention.

In accordance with aspects of the present invention there is provided a toilet pan and toilet support base. It is commonly known that ceramics are the traditional materials used to manufacture toilet bowls and pans because of their strength, longevity, resistance to discolouring and facility to withstand repetitive cleaning. However, the use of ceramics in a portable vacuum toilet system is impractical because of weight, cost and rigorous usage by the general public which, after a time, would inevitably render ceramic bowls cracked, broken and unable to be used, thereby damaging the reputation of both the supplier of the portable toilets and the host of the event where the toilets are sited.

In accordance with aspects of the present invention to overcome the shortcomings of ceramic toilet bowls and pans there is provided a toilet support base and toilet pan in two halves secured together, typically but not exclusively, rotational moulded from Linear Low Density Polyethylene resin (LLDPE), a polymer specially developed for the rotational moulding manufacturing process. Until now there has been no portable toilet pan, bowl or support base manufactured from LLDPE, which offers clear advantages over toilets manufactured from other materials.

Embodiments of the invention will now be described by way of example with reference to the accompanying drawings in which; Figure 1 depicts an illustration of a toilet pan I of essential features in accordance with aspects of the present invention.

Figure 2 depicts an illustration of a rear view assembly of a toilet pan 1, support base 2 waste pipe 3, moulded flutes for providing access to securing the assembly to a floor pan of essential features in accordance with aspects of the present invention.

Figure 3 depicts an illustration of another rear view assembly of a toilet pan 1, a support base 2 and waste pipe 3, of essential features in accordance with aspects of the present invention.

Figure 4 depicts a three quarter side view assembly of a toilet pan I and a support base 2, in accordance with aspects of the present invention.

In figure 1 a toilet pan 1 manufactured from LLDPE is shown such that the sides of the integral, internal bowl taper down in a conical manner to meet the L-shaped waste outlet to facilitate connection to a typical vacuum waste collector to the rear of the unit.

Figure 2 shows a rear assembly of a toilet pan 1, a toilet base 2 and a waste pipe 3 all S manufactured from rotationally moulded LLDPE. The perimeter of the top of the pan is fitted over the perimeter of the top of a toilet support base to form an assembly which can be mounted on a floor pan of a typical individual, portable plastic toilet housing by means of fixtures at the foot of support base 2 via holes and angled access flutes 4.

Figure 3 shows an alternative rear view of an assembly I and 2 manufactured from LLDPE, which encloses and supports a conjoined waste outlet 3. When fitted for use waste outlet 3 is connected to a typical vacuum extraction system.

It will be appreciated by those skilled in the art that any number of combinations of the aforementioned features and/or those shown in the appended drawings provide clear advantages over the prior art and are therefore within the scope of the invention described herein.

Claims

Claims 1 A toilet comprising an assembly made up of two halves, a pan and a base moulding, typically, but not exclusively, rotationally moulded from Linear Low Density Polyethylene resin, LLDPE, which when the aforesaid pan and base moulding are fitted together, is secured to a floor pan of an individual, portable, plastic toilet housing and connected internally and externally to, typically, a vacuum extraction system which rapidly facilitates the removal of human waste.
2 A toilet according to claim 1, in which a toilet pan is conically shaped in order to connect to a vacuum extraction system.
3 A toilet according to claim 1, in which a toilet pan is fitted over and secured to a base moulding.
4 A toilet according to claim 1, in which the material used is Linear Low Density Polyethylene resin, LLDPE.
A toilet according to claim 1, in which the manufacturing process is rotational moulding.
6 A toilet according to claim 1, in which the toilet assembly of pan and base moulding is fitted inside an individual, portable toilet housing for transportation to public events in order to provide temporary toilet facilities.