The invention refers to a drain trap for drained water appliances used to connect such appliances as bath tubs, shower basins, drainboard sinks wash bowls, washing machines, dish washers and the like to the water drainage piping.

The drain traps known from the Polish patent specification No 159 688 and the Polish pending patent application P - 292 440 comprises a body having inlet opening detachably coupled to a sleeve which in turn is detachably coupled to a tubular drainage member which in turn is fixedly jointed to a strainer The body of such drain traps has in its side wall an outlet opening with baffle being detachably coupled to an outflow stub pipe. To clean such drain trap the tubular drainage member together with its associated strainer is to be removed from said sleeve. There are also known the drain traps with inlet plugs being moved between their opened and closed positions by means of mechanical linkage. Such linkage is usually situated above the outlet openings of their associated traps and coupled appropriately with the plug by means of a member connecting the plug with the rest of linkage disposed outside the appliance to be drained (e.g. bath tub).

Main disadvantage inherent to such known drain traps consists in relatively troublesome procedure to be followed while attempting to clean them, as they either need to be disassembled if they are provided with collection chambers for entrapped impurities or when such collection chamber is not present, as in case of drain traps described in the Polish patent application P-292440, the tubular drainage member c w strainer must be removed for cleaning. The drain traps having their overflow openings situated in their body below its outflow opening are not encountered in any of hitherto known designs of such traps. Furthermore the linkages or similar arrangements for mechanically lifting and lowering the plugs are of rather complex design, labour consuming

in manufacture and do not ensure complete leak tightness.

Subject matter of the invention is the drain trap for drained water appliances, comprising a body having in its lower part an overflow opening situated on one side of the body and below the outlet opening of that body, the overflow opening being coupled, by means of an overthrow nut and its associated stepped gasket with the overflow tubing or water drainage tubing of another appliance. Furthermore through the overflow tubing and the drainage tubing with strainer seated in a sleeve passes a flexible connector, preferably in the form of jacketed wire cable, being terminated at its one end with a drainage plug detachable coupled thereto and at the another one with an actuating member, preferably in the form of a pull- or turn-knob.

When fully assembled and connected in place to its associated appliance the drain trap according to the present invention has lower end of its drainage tubing disposed preferably near to the axis of the overflow opening. Main advantage of the drain trap according to this invention consists in that owing to the fact that the overflow opening is being disposed below that through which water is being drained away from the drain trap it is possible to vent the trap which in turn enables to clean its bottom quickly and thoroughly and causes that water can be drained away more rapidly and it is unnecessary to disassembly the trap for cleaning puφoses or, if even the necessity of disassembling it arises this takes place very rarely and can be done easily.

By using the drain trap according to the present invention it is made possible to connect through a T-piece or directly to the overflow tubing the drain hose of a wash machine, dish washer or similar appliance irrespective of the fact for which one of sanitary appliances (bath tub, shower basin, wash bowl or drainboard sink) the drain trap will be used. Furthermore the jacketed steel wire cable passing through the drain trap and used for lifting and lowering the drain plug does not impede flow of drained as because jacketing completely smooth surface is exposed to such flow which is additionally advantageous as even in case of drained water extremely laden with solid and greasy impurities they are not deposited on any component used to move the drain plug.

One embodiment of the present invention is shown by way of example in the drawing attached, where: Fig.1 shows cross-sectional view of the drain trap Fig.2 shows cross-sectional view of the overflow tubing associated with that drain trap of Fig. 1.

In the embodiment show the drain trap according to the invention comprises a body 1 having in its upper part an inlet opening screwingly receiving an externally threaded sleeve 3 which passes through an opening in a rubber gasket 2. Inside the sleeve 3 a drainage tubing 5 is sealingly seated with its flared end by means of two sealing rings 4. This drainage tubing is permanently attached to a strainer 7 by means of hollow rivet 6. The body 1 is provided in its upper part with a side outlet opening communicating through a threaded joint with tapered sealing ring 8 and an overthrow nut 9 with an outflow tube 10. The body 1 has a further side opening situated beneath the outlet opening and serving for connection of overflow tubing 13. The overflow tubing 13 is connected to that opening by means of tapered sealing ring 11 and overthrow nut 12 serves to drain off any excess of water from associated sanitary appliance, in this embodiment a bath tub 14. A dissymmetrical T-union 15 constitutes a portion of that overflow tubing 13 and serves for connection of drainage hose from a washing machine (not shown) designated symbolically by 16. Water drained from the washing machine flows through that overflow tubing 13 to the drain trap proper and further through the outlet opening and its associated outflow tube to drainage system.

Inside the overflow tubing 13 and the drainage tubing 5 a flexible connector 17 in the form of stainless steel wire cable 18 jacketed by means of small-diameter plastic tube 19. The cable 18 is connected with one its end to a brass drain plug 20 and with another one with a stainless pull-knob 21. The plastic tube 19 is press-fitted at both ends into bushings 22 being attached to their associated hollow rivets 6. By pushing the pull-knob 21 the drain plug 20 is being lifted above the strainer 7 thus allowing to drain water from the bath tub 14 through the strainer and drainage tubing 5 to the outlet opening and the outflow tubing 10. By pulling the pull-knob 21 away from the strainer 23 of over-

flow opening in the bath tub 14 or by direct pushing down the drain plug 20 into its seat above the strainer 7 results in closing the inlet opening of the body 1 and thereby water is not more drained off from the bath tub 14. The strainer 23 is fixedly attached to a member 24 by means of hollow rivet 6. The member 24 in turn is sealingly seated by means of sealing ring 4 inside the sleeve 25 being firmly screwed into internally threaded flared end of the elbow 27 thereby compressing the gasket 27 interposed between the bath tub 14 and adjacent flange of the elbow 27.