In some embodiments, usage of a personal care device in compliance with a recommended use is improved. A usage monitor computing device may detect and store records of use of the personal care device. The usage monitor computing device may transmit the records of use to a monitoring server device via a network. The usage monitor computing device may determine whether the records of use indicate that the personal care device has been used as directed by the recommendations, and if so, may determine whether one or more rewards for use should be provided to the user. The usage monitor computing device may receive notifications of the rewards, and may present notifications of the rewards to the user.

A brush device includes a housing having an exit end, an entrance end, and a room defined in the housing. A propeller unit is located in the room and includes a shaft with multiple first blades on an outside thereof. The shaft includes a driving head extending through the exit end of the housing. The driving head is connected with a brush so that the brush is rotated by water entering from the entrance and exiting from the exit end.

A fluid flow actuated tool including a housing, a tool and an actuating mechanism. The housing includes a housing interior. The housing interior receives a flow of fluid. The actuating mechanism includes a fluid wheel structure. The fluid wheel structure is connected to the tool. At least a portion of the fluid wheel structure is arranged in the flow of fluid for rotating the fluid wheel structure. The tool is actuated based on rotation of the fluid wheel structure.

A fluid flow actuated tool including a housing, a tool and an actuating mechanism. The housing includes a housing interior. The housing interior receives a flow of fluid. The actuating mechanism includes a fluid wheel structure. The fluid wheel structure is connected to the tool. At least a portion of the fluid wheel structure is arranged in the flow of fluid for rotating the fluid wheel structure. The tool is actuated based on rotation of the fluid wheel structure.

A pressure washing system is disclosed for integration into a recreational vehicle or other large mobile vehicle. The wand of the system includes a rotating brush and one or more sensors to determine a distance from, pressure against, or orientation with respect to the vehicle. While a pump is supplying water to be output by the wand, the distance, pressure, orientation, or other sensor readings are continuously used to modify output characteristics of the wand, including the output water pressure and the speed of rotation of the brush. As a result, no more pressure is supplied by water or brush bristles than is necessary, avoiding overuse of water or damage to outer surfaces of the vehicle. Sensor readings may include one or more of a camera feed, sonar, lidar, pressure feedback, and accelerometer data. The system may also be responsive to a mobile app on a user's mobile computing device.

A pressure washing system is disclosed for integration into a recreational vehicle or other large mobile vehicle. The wand of the system includes a rotating brush and one or more sensors to determine a distance from, pressure against, or orientation with respect to the vehicle. While a pump is supplying water to be output by the wand, the distance, pressure, orientation, or other sensor readings are continuously used to modify output characteristics of the wand, including the output water pressure and the speed of rotation of the brush. As a result, no more pressure is supplied by water or brush bristles than is necessary, avoiding overuse of water or damage to outer surfaces of the vehicle. Sensor readings may include one or more of a camera feed, sonar, lidar, pressure feedback, and accelerometer data. The system may also be responsive to a mobile app on a user's mobile computing device.

An oral care appliance for cleaning teeth of a user and a method of adapting a brushing cycle of the oral care appliance are disclosed. Specific embodiments disclosed herein adapt the at least one brushing cycle based on a variety of factors, either alone or in combination, such as the time elapsed since a last brushing event and the identity of a user.

An oral care device for providing oral-cavity information to a user or a manager includes: a liquid supply unit; a mouthpiece connected to the liquid supply unit and including a spatial portion configured to accommodate at least one of an upper tooth side and a lower tooth side when the mouthpiece is inserted into an oral cavity; a pump connected to the mouthpiece and configured to suction liquid from the liquid supply unit and introduce the liquid into the spatial portion and to suction fluid from the spatial portion; a storage unit connected to the pump and configured to store or discharge fluid suctioned from the spatial portion; and a measuring unit connected to the storage unit and configured to measure a state of fluid stored in the storage unit, wherein liquid is introduced to the spatial portion from the liquid supply unit only by suction force of the pump.

An oral care device for providing oral-cavity information to a user or a manager includes: a liquid supply unit; a mouthpiece connected to the liquid supply unit and including a spatial portion configured to accommodate at least one of an upper tooth side and a lower tooth side when the mouthpiece is inserted into an oral cavity; a pump connected to the mouthpiece and configured to suction liquid from the liquid supply unit and introduce the liquid into the spatial portion and to suction fluid from the spatial portion; a storage unit connected to the pump and configured to store or discharge fluid suctioned from the spatial portion; and a measuring unit connected to the storage unit and configured to measure a state of fluid stored in the storage unit, wherein liquid is introduced to the spatial portion from the liquid supply unit only by suction force of the pump.

A mechanical device comprising, a gear rack having a first point and a second point; at least one piston attached either to said first point or said second point; said piston having an exterior surface and an interior surface; wherein said exterior surface is facing away from said gear rack and wherein said gear rack is attached to said interior surface; said gear rack being gyratingly coupled with an actuator shaft; wherein said gear rack is capable of moving in a substantially linear direction due to a force being applied to said exterior surface or said interior surface; and wherein said actuator shaft rotating due to the said motion of said gear rack; in another embodiment, at least one piston having an interior surface and an exterior surface; said inner side pivotingly mated with a connecting rod; said connecting rod having an opposing point B which is rotationally fastened to a counterbalance; said counterbalance rotating about an actuating shaft; a cylinder chamber having with a top breach housing said at least one piston; a pull shaft pivotingly connected to said exterior surface with pivoting joint and to a gear rack with a second pivoting joint; said pull shaft reciprocly advancing within said top breach; said reciprocation causing said gear rack to similarly reciprocate causing rotation of an input shaft; wherein said input shaft is mated with said gear rack through a one way gear box; and an accelerating spark plug, disposed in the body of said cylinder chamber for igniting combustible materials introduced into said cylinder chamber.