EP3825478A1

EP3825478A1 - Drain strainer for a drainpipe

Info

Publication number: EP3825478A1
Application number: EP19383032.0A
Authority: EP
Inventors: Humberto Ernesto Scorza Cure
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2021-05-26
Anticipated expiration: 2039-11-22
Also published as: EP3825478B1; EP3825478C0; ES3004340T3

Abstract

A drain strainer (6) for a drainpipe comprising a first waste accumulating container (1) having a bottom with holes forming a plane of holes (3), the accumulating container (1) being nested by a second waste accumulating container (2) with plurality of holes (4) through a side wall (7) surrounding the accumulating container (1), wherein a low raw of the plurality of holes defines a maximum level of accumulating water (H) inside said second accumulating container (2). The first waste accumulating container (1) has a lower tubular portion (9) located below said bottom and an opening of said tubular portion (9) and a side wall thereof defining a syphon arrangement with regard to the side wall (7) with said plurality of holes (4), wherein the plane of holes (3) is located above said maximum level of accumulating water so debris is retained on said bottom away from the accumulated water.

Description

Technical field

The present invention relates to the field of surface drains useful for floor drains, kitchen and bathroom sinks, bathtubs, and showers.
In particular, the invention relates to a device for straining and accumulate material sloughed into wastewater such as hair while bathing.

State of the Art

Some patents are known in this field that shows drain strainers like for example US2285833 that discloses a disposable waste strainer which is perforated by holes to allow waste water to flow therethrough having a tab struck up from the body thereof and extending upwardly from its upper open edge to facilitate handling thereof.
US7150576 escribes a drain strainer comprising a drain plate, a sleeve and a basket, coaxially mountable in a generally cylindrical drain pipe; the basket has a plurality of holes disposed circumferentially and the sleeve having an open bottom in such a way the drain water flow openings in the basket before traversing the flow openings and entering the drainpipe. Because of the relative disposition between the sleeve and the basket the drain also has the function of a syphon. This proposal doesn't allow the debris to be retained away from the accumulated water, due to the bottom of the sleeve is submerged in the water retained by the basket and the basket could contain water inside. This proposal is not easily removable and in other hand the disclosed embodiment does not include any element which gives a perfume during use.
Therefore, new drain strainers are needed.

Brief description of the invention

To that end the present invention proposes, according to one aspect, a drain strainer for a drain pipe of a bathtub or of a shower, that comprises a first waste accumulating container which has a tubular shape, this first waste accumulating container is open by the two ends (top and bottom parts) and comprises inside it in a transversal wall a first plane of holes, that is designed to filter or to strain and also to retain particles of collected waste material mainly hair debris.
This first plane of holes in the transversal wall can have at least one hole or pore with a maximum size dimension is such as not let the hair debris through while a plurality of small holes is preferred According to a preferred embodiment this first plane of holes consists of a sieve or a strainer very porous.
The drain strainer of the invention also comprises a second waste accumulating container that consist of a waste with tubular shape that has one end open and the other end closed, wherein this closed end defines a bottom, in such a way that the flow water could be retained in the bottom of the second waste accumulating container. The second waste accumulating container also comprises a plurality of holes through a side wall of the second waste accumulating container, the holes being defined at a distance of said bottom
In the second waste accumulating container, the low raw of the plurality of holes defines a maximum level of accumulating water inside said second waste accumulating container. That means that after a flow of water enters the drain strainer the water will be retained in the second waste accumulating container that is limited in height by the low raw of the plurality of holes of the second waste accumulating container.
According to a preferred embodiment the first waste accumulating container is nested and held by the second waste accumulating container and includes a tab for hand removal. One of the characteristics of the drain strainer in one preferred embodiment is the fact of being easily removable and able to be disposable in particular by the materials used in its manufacture.
The first waste accumulating container is nested and held by the second waste accumulating container and according to a preferred embodiment are coaxially located between them and within the drainpipe. The first waste accumulating container and the second waste accumulating container, according to a preferred embodiment are held by a first annular sealing element and the second waste accumulating container are also held with the drain pipe by a second annular sealing element, an in this embodiment these first and second annular sealing element are deodorant impregnated. This first and second annular sealing element are in a first portion of the drain strainer above and distanced of the planes of holes of the first waste accumulating container.
The lower end of the first waste accumulating container define a lower tubular portion that is located below the maximum level of accumulating water and this arrangement define a syphon.
It will be understood that references to geometric position, such as parallel, perpendicular, tangent, etc. allow deviations up to ± 5° from the theoretical position defined by this nomenclature.
It will also be understood that any range of values given may not be optimal in extreme values and may require adaptations of the invention to these extreme values are applicable, such adaptations being within reach of a skilled person.
Other features of the invention appear from the following detailed description of an embodiment.

Brief description of the Figures

The foregoing and other advantages and features will be more fully understood from the following detailed description of an embodiment of the drain strainer above explained with reference to the accompanying drawings, to be taken in an illustrative and non-limitative manner, in which:

Fig. 1: is a cross-section view of the drain strainer for a drainpipe OF THIS INVENTION.
Fig. 2: is a perspective view of the first waste accumulating container previously referred.
Fig. 3: is a perspective view of the second waste accumulating container.
Fig. 4: is a top view of the drain strainer.
Fig. 5: is a perspective view of the first and second annular sealing element.

Detailed description of an embodiment

Firstly, regarding Fig. 1 it shows a cross-section of the drain strainer for a drainpipe 6 that comprises a first waste accumulating container 1 nested a second waste accumulating container 2 and both nested and coaxially mounted in a drainpipe 6. The first and second waste accumulating container 1,2 and the drainpipe 6 are also in contact through a first and a second annular sealing elements 5,8 respectively. The first waste accumulating container 1 has a first plane of holes 3 in a transverse wall that defines a bottom inside the first waste accumulating container 1 (in a middle region thereof) and a tab 10 for hand removal located in the upper part of the first waste accumulating container 1 foldable to the inside and the lowest part of the first waste accumulating container 1 defines a lower tubular portion 9. The second waste accumulating container 2 has a second plurality of holes 4 through a side wall 7 that define a ring coaxial with the first and the second waste accumulating container 1,2.
Fig. 2 shows a perspective view of the first waste accumulating container 1 of Fig. 1 having a cylinder shaped that comprises one tab 10 (for example pliable to the inside and deployable) for hand removal located in the top of the first waste accumulating container 1. Also show in the interior of the first waste accumulating container 1 is a first plane of holes 3 and below the first plane of holes 3 shows a tubular portion 9 that is open.
Fig. 3 shows a perspective view of the second waste accumulating container 2 having a tubular shape with an end closed, that comprises a second plurality of holes 4 through a side wall 7 coaxial with the first and the second waste accumulating container 1,2. The low part of the second plurality of holes 4 defines a maximum level of accumulating water (H) inside said second waste accumulating container 2.
Fig. 4 is a top view of the drain strainer including the referred first and second waste accumulating containers 1,2 of a tubular shape and having a coaxial arrangement. The top view also shows the first plane of holes 3 at the bottom of the first waste accumulating container 1, and a tab 10 for hand removal.
Fig. 5 is is a perspective view of the first and second annular sealing elements 1,2 having a ring form and coaxially mounted between first and second waste accumulating containers 1, 2.
The foregoing and other advantages and features will be more fully understood from the following detailed description of an embodiment with reference to the accompanying drawings, to be taken in an illustrative and not limitative, in which:
It will be understood that various parts of one embodiment of the invention can be freely combined with parts described in other embodiments, even being said combination not explicitly described, provided there is no harm in such combination.

Claims

A drain strainer for a drainpipe (6) comprising:
a first waste accumulating container (1) of a tubular shape having a bottom with one or more holes forming a first plane of holes (3), said first waste accumulating container (1) being nested in and held by a second waste accumulating container (2) which has a plurality of holes (4) through a side wall (7) thereof surrounding said first waste accumulating container (1), wherein a low raw of said second plurality of holes (4) defines a maximum level of accumulating water (H) inside said second waste accumulating container (2) characterised in that said first waste accumulating container (1) has a lower tubular portion (9) located below said bottom and an opening of said tubular portion (9) and a side wall thereof defining a syphon arrangement with regard to the side wall (7) with said plurality of holes (4), and wherein

said first plane of holes (3) is located above said maximum level of accumulating water (H) so that any debris is retained on said bottom away from the accumulated water.
The drain strainer for a drainpipe (6) according to claim 1, wherein said first and second waste accumulating container (1,2) are coaxial.
The drain strainer for a drain pipe (6) according to claim 2 wherein a first annular sealing element (5) is coaxially located between said first and second waste accumulating container (1,2) and a second annular sealing element (8) is coaxially located between said second waste accumulating container (2) and said drain pipe (6) both first and second annular sealing element (5,8) being located in a first portion of the drain strainer above said first plane of holes (3).
The drain strainer for a drainpipe (6) according to claim 1, wherein it is made of a material enabling it to be disposable.
The drain strainer for a drainpipe (6) according to claim 1, includes a tab (10) for removal fixed to said a first waste accumulating container (1).
The drain strainer for a drainpipe (6) according to claim 1, wherein said first and second annular sealing element (5,8) are deodorant impregnated.
The drain strainer for a drainpipe (6) according to claim 1, wherein said second waste accumulating container (2) is coaxially mountable inside said generally cylindrical drainpipe (6).