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A safety razor has a handle formed by a refillable container ( 8 ). After filling with water a tablet ( 20 ) containing a carbon dioxide gas generating substance is added to the water and the gas pressure is used to deliver liquid from the container to the underside of the razor blade unit ( 1 ). Th

A safety razor has a handle formed by a refillable container ( 8 ). After filling with water a tablet ( 20 ) containing a carbon dioxide gas generating substance is added to the water and the gas pressure is used to deliver liquid from the container to the underside of the razor blade unit ( 1 ). The tablet also includes a substance which upon being mixed with water produces a fluid which may have desirable properties for application to the skin during shaving, such as lubrication, moisturizing, applying a fragrance, chemical treatment of hairs, bacterial or medicinal treatment of the skin and/or blood coagulation. The container ( 8 ) can be equipped with a dispenser ( 30 ) operable to deliver tablets into the water filled container.

대표청구항 ▼

1. A shaving system, which comprises a razor comprising a shaving head including at least one blade, a refillable reservoir for supplying a fluid to be applied to the skin in connection with a shaving procedure, and a dose of a substance which on mixing with water generates gas and produces a prepar

1. A shaving system, which comprises a razor comprising a shaving head including at least one blade, a refillable reservoir for supplying a fluid to be applied to the skin in connection with a shaving procedure, and a dose of a substance which on mixing with water generates gas and produces a prepared fluid having a characteristic desirable for treating the skin and/or the hair to be shaved, the reservoir being coupled to the shaving head and comprising a chamber including at least one inlet and discharge port for filling the chamber with water, for delivering into the chamber the substance for mixture with water in the chamber, and for discharging the prepared fluid from the chamber for application to the skin, the prepared fluid being discharged at the shaving head under pressure produced in the chamber by the gas generated when the substance is mixed with the water in the chamber, the reservoir comprising a container arranged to form a razor handle, the shaving head being detachably supported on the container by a razor neck providing a delivery passage for conducting the prepared fluid discharged from the reservoir chamber to the shaving head, and the razor neck providing a cap which can be detached from the container to allow the water and the substance to be added to the chamber to form the prepared fluid therein, said dose having a predetermined amount of said substance such that the amounts of gas generated and fluid prepared are sufficient for delivery to the skin to complete only one shave. 2. A shaving system according to claim 1, wherein the shaving head is arranged for the prepared fluid to be discharged at a position ahead of the blade or blades as they move across the skin during shaving. 3. A shaving system according to claim 2, wherein the prepared fluid is discharged at a guard surface. 4. A razor according to claim 1, wherein means are provided for delivering a predetermined dose of the substance into the container. 5. A razor according to claim 1, wherein a predetermined dose of the substance is provided in tablet form or contained in a water soluble capsule. 6. A razor according to claim 1, including a magazine for holding respective doses of substance and operable to deliver the respective doses in turn into the reservoir chamber. 7. A shaving system according to claim 1, wherein the substance generates carbon dioxide on being mixed with water. 8. A shaving system according to claim 7, wherein the substance comprises sodium bicarbonate. 9. A shaving system according to claim 7, wherein the substance comprises tartaric acid and/or citric acid and at least one salt selected from the group consisting of sodium carbonate, sodium bicarbonate, sodium hydrogen carbonate, potassium carbonate, potassium bicarbonate, and potassium hydrogen carbonate. 10. The razor according to claim 1, wherein a valve means is provided for controlling flow of fluid through the delivery passage through which fluid flows from the reservoir to the shaving head. 11. A shaving system, which comprises a razor comprising a shaving head including at least one blade, a refillable reservoir for receiving water and supplying a fluid to be applied to the skin in connection with a shaving procedure, and a dose of a substance for addition to the water in the reservoir for generating gas and producing a prepared fluid having a characteristic desirable for treating the skin and/or the hair to be shaved, the reservoir being coupled to the shaving head and comprising a chamber including at least one inlet and discharge port for filling the chamber with water, for delivering into the chamber the dose of the substance for mixture with water in the chamber, and for discharging the prepared fluid from the chamber for application to the skin, the prepared fluid being discharged at the shaving head under pressure produced in the chamber by the gas generated when the substance is mixed with the water in the chamber, said dose having a predetermined amount of said substance such that the amounts of gas generated and fluid prepared are sufficient for delivery to the skin to complete only one shave. 12. A shaving system according to claim 11, wherein the reservoir comprises a container arranged to form a razor handle, and the shaving head is detachably supported on the container by a razor neck providing a delivery passage for conducting fluid discharged from the reservoir chamber to the shaving head. 13. A shaving system according to claim 12, wherein the container includes a container neck which defines a combined inlet and discharge port and the razor neck is detachably connected to the container neck. 14. A shaving system according to claim 13, wherein the razor neck forms a cap which is detachable from the container neck to allow the water and the dose of the substance to be added to the container. 15. A shaving system according to claim 13, wherein the container neck and the razor neck are provided with a screw threaded coupling to detachably connect the container neck to the razor neck. 16. A shaving system according to claim 14, which includes a dip tube in communication with the fluid delivery passage for discharge of fluid from the reservoir, the dip tube having a valve arrangement permitting discharge of fluid therethrough with the reservoir held either upright or inverted. 17. A shaving system according to claim 16, wherein the valve arrangement comprises a first valve adjacent to the lower end of the dip tube and a second valve adjacent to the upper end of the dip tube for controlling the flow of fluid from the container into the dip tube, the first valve being open and the second valve being closed when the container is upright, and the first valve being closed and the second valve being open when the container is inverted. 18. A shaving system according to claim 17, wherein each valve comprises a gravity operated ball valve. 19. A shaving system according to claim 16, which includes a tube extending from the delivery passage in the razor neck to the shaving head. 20. The shaving system of claim 11, wherein the substance on admixture with water produces a fluid with desired lubricating properties and/or moisturizing properties and/or fragrance and/or chemical hair treatment properties and/or bacterial or medicinal properties, and/or cleansing properties and/or blood coagulation properties.