A multi-function charging coil bobbin (90) for a power toothbrush (10) configured to improve the durability of the toothbrush and to simplify the assembly process. The coil bobbin (90) provides a bridge spring (98) for tolerance mitigation and shock protection, and also provides a coil winding surface (92) such that the bobbin (90) can be wound prior to final assembly. The coil bobbin (90) may be unitary in structure for low cost.

A system configured to mitigate axial shocks and rotational vibration in a resonating power toothbrush (10). The system includes a motor mount (70), frame (40), and multi-function coil bobbin (90) that act in concert to absorb axial shocks originating from the motor shaft (60). The mount (70), frame (40), and coil bobbin (90) also act in concert to damp vibrations originating from the motor (50) to the housing (20).

A replaceable brush head includes an upper surface, an outer perimeter edge, and a plurality of tufts. The upper surface includes a plurality of bristle tufts. The lower surface includes an outwardly extending knock-out button. The outer perimeter edge includes at least one protrusion. The replaceable brush head may be installed in a toothbrush body that includes a head portion having a recess sized to fit the replaceable brush head with a knock-out opening for the knock-out button and at least one channel for coupling to the at least one protrusion. The replaceable brush head can be removed from the toothbrush assembly by applying a force to the knock-out button in the direction of the tuft plate.

The present invention relates generally to a system and method for measuring the structural characteristics of an object. The object is subjected to an energy application processes and provides an objective, quantitative measurement of structural characteristics of an object. The system may include a device, for example, a percussion instrument, capable of being reproducibly placed against the object undergoing such measurement for reproducible positioning. The system includes features for adjusting the energy applied to an energy application tool to compensate for the physical characteristics or type of the object, and/or for orientation of the device relative to the horizontal during measurement. The system also includes a disposable feature or assembly for minimizing cross-contamination between tests. The structural characteristics as defined herein may include vibration damping capacities, acoustic damping capacities, structural integrity or structural stability.

The general field of the disclosure herein relates to the design of one or more health related monitoring or maintenance devices. These devices may include but are not limited to devices that monitor and/or maintain the health of users or devices that monitor and/or maintain the health of assets. The devices include oral cleaning devices for maintaining and monitoring the oral health of users, clothing for monitoring the health and fitness of users and charging pads which may monitor the health or assets being charged. Sensors may be integrated in these devices including but not limited to IMUs, thermocouples or oral cleaning devices, IMUs in clothing like shoes or wrist bands, or timers or charging sensors in magnetic surfaces which may cause one or more objects and/or other magnetic surfaces to float when a desired function is achieved.

A powered personal care (e.g., razor, toothbrush, etc.) system may comprise a battery-powered oral care device. The oral care device may comprise a handle portion that may comprise a rechargeable battery configured to be detachably connected to the handle portion. The handle portion may comprise a motor configured to be energized by the rechargeable battery. The oral care device may comprise a head portion that may comprise a plurality of brush bristles. The personal care system may comprise a hydraulically powered battery charging device. The charging device may comprise a housing, a hydraulic inlet port, a magnetic core, a turbine blade in mechanical communication with the magnetic core. The turbine blade may be motivated into rotation by a flow of hydraulic fluid across the at least one turbine blade. The charging device may comprise a battery port configured to insertably receive the rechargeable battery.

An injection molded oral care device includes a neck portion and a handle coupled to a first end of the neck portion. where the handle has one or more grips configured to facilitate gripping the oral care device. The oral care device also includes a cleaning head coupled to a second end of the neck portion. The cleaning head includes a base and one or more bristles extending from the base, where the one or more bristles are configured to facilitate cleaning an oral cavity of a patient. The neck portion, handle, and base of the cleaning head are formed by injection molding a first material, and the one or more bristles are formed by injection molding a second material, different from the first material.

The present invention relates generally to a system and method for measuring the structural characteristics of an object. The object is subjected to an energy application processes and provides an objective, quantitative measurement of structural characteristics of an object. The system may include a device, for example, a percussion instrument, capable of being reproducibly placed against the object undergoing such measurement for reproducible positioning. The system does not include an external on/off switch or any remote on/off switching mechanism. The system also includes a disposable feature or assembly for minimizing cross-contamination between tests. The structural characteristics as defined herein may include vibration damping capacities, acoustic damping capacities, structural integrity or structural stability.

The present invention relates generally to a system and method for measuring the structural characteristics of an object. The object is subjected to an energy application processes and provides an objective, quantitative measurement of structural characteristics of an object. The system may include a device, for example, a percussion instrument, capable of being reproducibly placed against the object undergoing such measurement for reproducible positioning. The system includes features for adjusting the energy applied to an energy application tool to compensate for the physical characteristics or type of the object, and/or for orientation of the device relative to the horizontal during measurement. The system also includes a disposable feature or assembly for minimizing cross-contamination between tests. The structural characteristics as defined herein may include vibration damping capacities, acoustic damping capacities, structural integrity or structural stability.

The present disclosure is concerned with a personal care device having an energy source arranged for being removable, the personal care device having an outer housing having a detachable closure element at one end, the detachable closure element enabling access to a cavity of the outer housing after detachment, a chassis disposed in the cavity of the outer housing, the chassis holding the energy source, the chassis having a blocking structure such as a charging coil holder positioned between the energy source and the closure element along an energy source removal direction, the energy source having a first electrical connector non-permanently coupled with a first electrical connector partner and a second electrical connector non-permanently coupled with a second electrical connector partner, the first electrical connector partner and the second electrical connector partner being secured at the chassis, the chassis being arranged for removal from the cavity of the outer housing along a chassis removal direction when the closure element is detached, and the blocking structure having at least one holder arm with a neck section provided for a severance cut so that the blocking structure can be bent away after the severance cut to allow removing the energy source from the chassis.