DE9304313U1 - Toothbrush working via negative pressure - Google Patents

Description

-Sheet 1- .·-,_'■ -KkWnze'i'che'n'-. G93 04 313.9

Description:

It is a toothbrush that uses overpressure (mechanical actuation) to pump tooth cleaning fluid, e.g. liquid toothpaste, through a pressure chamber and a pump patent (as known from Pump and Spray) via the brush handle to the bristles. The state of the art can be found in the US patent or EP patent EP 0 437 706 A1 of the Colgate-Palmolive Company.

This invention is the current state of the art in this area. A further development is available in that the invention (G 93 04 313.9) is based on the principle of pump and spray, and no cartridges or filling containers need to be replaced. This contributes not least to environmental protection, and is also easier to handle. The operation is carried out individually using an actuation button located on the top of the housing. The pressure is easily generated by pumping several times in a vertical position (brush head upwards) via a tubular piston that works in the cylinder via a membrane to the tank. The working pressure is approx. 1-1.5 bar. The device has a tank for approx. 5c ml, i.e. Two uses. After emptying the tank, the toothbrush is flanged to the refill container, which hangs vertically downwards (cap with coupling downwards/upside down), with the toothbrush also hanging vertically (bristles downwards).

The liquid level can be determined using a liquid level gauge on the toothbrush. The toothbrush can remain in the flanged position even after use and filling.

Description of the individual functions:

The toothbrush, which is attached to the refill container - on the coupling, is first pulled downwards out of it (15). For the sake of simplicity, the toothbrush is now placed in a vertical position on a solid surface (on the piston, which is located at the end of the device (14). In this position, the entire brush - brush body (1) can now be brought to the operating pressure by repeatedly pressing it down. During this process, the piston (i4) is pressed into the cylinder/pressure chamber (16), whereby the rubber flange (12) serves to compress/connect the piston and cylinder. With the help of the compression springs (27), the piston is pressed back into its starting position after the compression thrust. The pressure achieved during this process now escapes via the membrane (8), which represents the connection from the cylinder to the tank.

The pressure in the tank (2) now acts on the cleaning fluid, which is fed to the brush head via the pressure lines (3) and comes out of the spray nozzles (19). The ends of the pressure lines in the tank are arranged so that the brush can be used from both the right and the left. The fluid can be dosed individually using the operating button (5), which is located on the side of the upper half of the housing and is movably mounted on a joint. The brush head (18) is connected to the device body with a thread and is therefore interchangeable with the spray head (25). After use, the toothbrush is reconnected to the coupling (15) - which has an opening for filling the toothbrush.

to the refill container, which has the counterpart of the coupling integrated into the lid. The holder of the bottle/refill container is attached to the wall and the bottle is attached upside down in it.

Various cleaning and care products that are suitable for pre-cleaning or long-term protection can be used. The associated spray head can also be used to treat treatment fluids in the throat/pharynx area. This device is therefore universally used for dental care as well as for medical aid, and is extremely easy to use and refill in all forms.

About the individual figures:

FTG. 1 Overall view FIG.2 Spray head FIG.3 Refill container FIG.4 Tubular piston for compressing the air FIG.5 Top view of piston FIG.6 Spray head

Details about the device:

1.Device body/housing 2.Liquid container/tank/pressure chamber 3.Pressure lines 4.Spring/actuating valve 5.Actuating button 6.Riser pipe 7.Pressure line/riser pipe 8.Diaphragm

9.Inlet pipe/refill 10.Activation/bearing/joint 11.Spring/actuation 12.Rubber flange/ring for compression 13.Stops/guides 14.Piston/tubular with sealing rubber 15.Inlet valve/coupling for refill 16.Cylinder/pressure chamber 17.Outlet valve/riser pipe to brush head 18.Brush head - integrated with spray nozzles - 19.Spray nozzles or outlets for the liquid 20.Thread/connection between head and housing 21.Refill container 22.Cap of the container integrated with coupling 23.Outlet valve/refill/counterpart of the coupling 24.Bristles

25.Replaceable spray head 26.Spray nozzle/outlet 27.Pressure springs 28.Pump device

Claims (8)

Protection claims: I.The toothbrush is particularly characterized by the fact that it forms a unit combined with a pump device (28) in connection with the device housing (1) and the special brush head (18). 2.The device works on an overpressure basis, whereby the pressure is generated mechanically with an integrated pump device (28) at the end of the device. 3.The toothbrush is refilled via a coupling (15) that is integrated into the cylinder at the end of the device. The toothbrush is flanged upside down to the refill container, which fills up automatically. 4.The refill container also serves as a holder in which the toothbrush remains. 5.The piston of the pump patent (14) is pressed back into its starting position by means of springs (27) after the compression stroke. 6.The brush head (18) is connected to the device with a thread (20) and is therefore interchangeable with the spray head. 7.The arrangement of the pressure lines in the tank -H shape-, in which two lines lead the liquid to the riser pipe depending on the position, guarantees function in almost any position. 8.The lid of the refill container is provided/connected to the counterpart of the coupling.