Patent EA-000234-B1 (EA)
Title: Toothbrush with pump
IPC: A46B11/00
Filed: 1996-12-10
Abstract: 1.A pump toothbrush comprising a brush portion (7), a grip portion (1) and an intermediate arm portion (6), whereby the grip portion (1) comprises a container portion (11) for a dental cleansing medium, said container portion (11) being connected with the brush portion (7; or means of a pump device (2) in order to teed the dental cleansing medium into the brush portion (7) through the arm portion (6), characterized in that - the pump device (12) comprises a frame portion (21) arranged between the container portion (11); and the arm portion (6) in such a way that the casings of the container portion (11), the frame portion (21) and the arm portion (6) form an essentially congruent casing surface, - the frame portion (21) comprises a generally cylindrical recess (25) located perpendicularly with respect to the longitudinal axis of the pump toothbrush, -a generally cylindrical adjusting body (26) forming the inner portion of the pump device (2) is fitted into the recess (25), said body comprising an axial outwards open intermediate space (32) acting as a chamber of the pump, said space being closed by a flexible pressure membrane (22) arranged in the plane of the casing of the frame portion (21) and forming the sealing between the adjusting body (26) and the frame portion (21), - inlet and outlet valves (31, 33) are arranged in the bottom of the adjusting body (26) opposite the pressure membrane (22) and the intermediate space (32) is through these connected to the container portion (11) and the crush portion (7). 2. A pump toothbrush according to Claims 1 to 2, characterized in that the pump device comprises a pressure membrane pump (2) and the intermediate space (32) of the adjusting body (26) fitted into its frame portion (21), the inlet valve connection (31, 34, 35) connected to the container portion (11) by an interconnector (311), the outlet valve connection (33, 36, 37) connected to the brush portion (7) by means of the interconnector (332) and the pipes (4 and 5) form an essentially straight pipeline for the dental cleansing medium from the container portion (11) to the brush portion (7). 3. A pump toothbrush according to Claims 1 to 7, characterized in that the frame portion (21) comprises an aerator valve (29), which is in connection with the surrounding space and the container portion (11). 4. A pump toothbrush according to clams 1 to 2, characterized in that valve housings (34 and 36) are formed on the lower portion of the adapting body (26); and they are open towards cylindrical circumference of the adjusting body (26) in order for the unattached valve members (35 and 37) to be placed in them before the adjusting body (26) is fitted into the recess (25) in such a way that the valve housings (34 and 36) are closed by the outer casing of the recess (25), said housings being located at the interconnectors (311 and 332) in the frame portion (21). 5. A pump toothbrush according to Claims 1 to 2, characterized in that a spring (24) is connected to the flexible pressure membrane (22), said spring being arranged to function and increase the efficiency of the pressure membrane (22) in the intermediate space (32) in the stair-like expansion (321) under the pressure membrane (22). 6. A pump toothbrush according to Claims 1 to 2, characterized in that the pressure membrane (22) is made of a flexibly reversible material. 7. A pump toothbrush according to Claims 1 to 2, characterized in that the arm portion (6) and the container portion (11) are arranged to be attached to the frame portion (21) by means of an interference fitting provided with sliding surfaces (21, 28). 8. A pump toothbrush according to Claims 1 to 2, characterized in that the arm portion and the container portion are arranged to be attached to the frame portion by means of a pipe thread. 9. A pump toothbrush according to Claims 1 to 2, characterized in that the casings of the end of the arm portion (6) located towards the frame portion (21), the frame portion (21) and the container portion (11) are essentially cylindrical and that the flexible pressure membrane (22) of the pump device (2) is, for example, round or elliptic so that it adjusts to the form of the congruent casing portions of the arm portion, the frame portion and the container portion. 10. A pump toothbrush according to Claims 1 to 2, characterized in that the container portion (11) has a refillable structure.