Abstract: A method of attaching a brush head to an oral cleansing device is provided. The method may include inserting a drive shaft of the oral cleansing device into a shaft of the brush head. The method may include causing, in response to inserting the drive shaft into the shaft of the brush head, a cantilevered beam inside the shaft to bend outward, creating a reactionary force that presses against the drive shaft.

Abstract: A bypass flow assembly of an oral irrigator is provided. The oral irrigator may include a handle positionable between a first mode and a second mode and a valve assembly including a bypass valve movable between first and second positions and an inlet valve movable between open and closed positions. The first position of the bypass valve may be associated with the first mode of the handle and the second position of the bypass valve may be associated with the second mode of the handle, such that the bypass valve moves from the first position to the second position when the handle is positioned in the second mode and remains in the second position until the handle is positioned in the first mode. The inlet valve may move between the open and closed positions when the bypass valve is positioned in the first position and the second position.

Abstract: In one embodiment, an oral irrigator is disclosed. The oral irrigator may include a housing, a drive assembly positioned within the housing, a pump assembly coupled to the drive assembly and an isolator assembly coupled to at least one of the drive assembly or the pump assembly and configured to dampen vibrations generated by either or both of the drive assembly or the pump assembly. The isolator assembly includes a chassis operably coupled to a portion of at least one of the drive assembly or the pump assembly, an engagement arm coupled to and extending outwards from the chassis, and a dampener positioned between the chassis and a portion of the housing, the dampener comprising a pocket defined therein and configured to support the isolator assembly within the housing, where the engagement arm engages an engagement surface of the dampener separate from a pocket surface defining the pocket.

Abstract: Various embodiments of oral irrigators are disclosed. In one embodiment, an oral irrigator is disclosed that includes a handle including a tip, a reservoir, a pump assembly fluidly coupled to the reservoir and the tip and configured to pump fluid from the reservoir to the tip and a valve assembly that directs fluid from the pump back to the reservoir when a flow path between the tip and the pump assembly is obstructed, where the valve assembly is vibrationally isolated from the pump assembly.

Abstract: Various configurations for a pump for oral irrigators. In one embodiment, a pump is disclosed that includes a connecting rod and a piston. The piston includes a sidewall defining a piston cavity and a rod cutout defined in the sidewall where the rod cutout enables insertions of a portion of the connecting rod into the piston cavity, where after insertion the connecting rod extends from the piston cavity past a bottom edge of the sidewall.

Abstract: An oral irrigator including a reservoir, a handle, a housing, a bezel positioned at least partially within and secured to the housing, and an actuator operably coupled to the housing and movable relative thereto is disclosed. The actuator includes a control shaft extending from the interior surface of the face and positioned inwards from an outer perimeter of front wall. The control shaft extends through an aperture in the housing and movement of a gripping body causes the control shaft to directly actuate a switch or a pressure assembly positioned within the housing. The actuator also includes an augmentation fluid positioned between the bezel and a portion of the actuator. The augmentation fluid modifies a frictional relationship between the bezel and the actuator to provide a predefined resistance force between the actuator and the bezel as the actuator is rotated relative to the bezel.

Abstract: A method of attaching a brush head to an oral cleansing device is provided. The method may include inserting a drive shaft of the oral cleansing device into a shaft of the brush head. The method may include causing, in response to inserting the drive shaft into the shaft of the brush head, a cantilevered beam inside the shaft to bend outward, creating a reactionary force that presses against the drive shaft.

Abstract: An oral cleansing device including a handle, a brush head removably connected to the handle at a top end of the handle, a base unit that supports a reservoir to serve as a fluid source, a fluid tube extending from the base unit, and a fluid connector connected to the fluid tube and removably connected to the handle at a bottom end of the hand to connect the handle to the fluid source. The fluid connector includes a magnetic element configured to provide a magnetic attraction to the base unit, thereby assisting in securing the fluid connector to the base unit.

Abstract: A brush head for an oral cleansing device is provided. The brush head may include a shaft and a cantilevered beam positioned within the shaft. The cantilevered beam may be configured to press against a drive shaft of the oral cleansing device to transfer motion of the drive shaft to the brush head. The cantilevered beam may be formed on an adapter secured within the shaft.

Abstract: A toothbrush including a chassis assembly, an output shaft configured to connect to a brush head and extending at least in part through a portion of the chassis assembly, a power train assembly operably connect to the output shaft, where the power train assembly oscillates the output shaft. The toothbrush also includes a fluid connector operably coupled to the chassis assembly and fluidly coupled to the output shaft via the power train assembly. The fluid connector rotates 360 degrees relative to the chassis assembly.

Abstract: A bypass flow assembly of an oral irrigator is provided. The oral irrigator may include a handle positionable between a first mode and a second mode and a valve assembly including a bypass valve movable between first and second positions and an inlet valve movable between open and closed positions. The first position of the bypass valve may be associated with the first mode of the handle and the second position of the bypass valve may be associated with the second mode of the handle, such that the bypass valve moves from the first position to the second position when the handle is positioned in the second mode and remains in the second position until the handle is positioned in the first mode. The inlet valve may move between the open and closed positions when the bypass valve is positioned in the first position and the second position.

Abstract: An oral cleansing device (e.g., an irrigating, electric toothbrush) is disclosed. The oral cleansing device includes a handle, a cleansing attachment (e.g., a brush head attachment), and an irrigating attachment (e.g., an oral irrigator tip). The handle includes one or more control buttons to activate motion of an output shaft and/or an irrigating feature of the oral cleansing device. The cleansing attachment includes a plurality of bristles and is attachable to the handle such that movement of the output shaft is transferred to the cleansing attachment. The irrigating attachment defines an internal fluid passageway for receiving fluid from the handle and is attachable to the handle such that movement of the output shaft is not transferred to the irrigating attachment.

Abstract: A brush head for an oral cleansing device is provided. The brush head may include a shaft and a cantilevered beam positioned within the shaft. The cantilevered beam may be configured to press against a drive shaft of the oral cleansing device to transfer a rotational motion of the drive shaft to the brush head. The cantilevered beam may be formed on an adapter secured within the shaft.

Abstract: An oral irrigator including a reservoir, a handle, a housing, a bezel positioned at least partially within and secured to the housing, and an actuator operably coupled to the housing and movable relative thereto is disclosed. The actuator includes a control shaft extending from the interior surface of the face and positioned inwards from an outer perimeter of front wall. The control shaft extends through an aperture in the housing and movement of a gripping body causes the control shaft to directly actuate a switch or a pressure assembly positioned within the housing. The actuator also includes an augmentation fluid positioned between the bezel and a portion of the actuator. The augmentation fluid modifies a frictional relationship between the bezel and the actuator to provide a predefined resistance force between the actuator and the bezel as the actuator is rotated relative to the bezel.

Abstract: The present disclosure relates to an oral cleansing device with illumination features. In one example, a diffuser for diffusing light is disclosed. The diffuser includes a first membrane configured to be positioned over a first light source, a second membrane coupled to the first membrane and configured to be positioned over a second light source; and a bridge coupling the first membrane to the second membrane, where the bridge extends from an edge of the first membrane to an edge of the second membrane in an indirect manner.

Abstract: An actuation assembly for an oral irrigator includes a bezel secured to or formed as part of a housing of the oral irrigator, an actuator operably connected to the bezel and moveable relative thereto, and an augmentation fluid positioned between the bezel and the actuator. The augmentation fluid modifies a frictional relationship between the bezel and the actuator to provide a predefined resistance force between the actuator and the bezel as the actuator is rotated relative to the bezel.

Abstract: The present disclosure relates to an oral cleansing device with illumination features. In one example, a diffuser for diffusing light is disclosed. The diffuser includes a first membrane configured to be positioned over a first light source, a second membrane coupled to the first membrane and configured to be positioned over a second light source; and a bridge coupling the first membrane to the second membrane, where the bridge extends from an edge of the first membrane to an edge of the second membrane in an indirect manner.

Abstract: A toothbrush including a chassis assembly, an output shaft configured to connect to a brush head and extending at least in part through a portion of the chassis assembly, a power train assembly operably connect to the output shaft, where the power train assembly oscillates the output shaft. The toothbrush also includes a fluid connector operably coupled to the chassis assembly and fluidly coupled to the output shaft via the power train assembly. The fluid connector rotates 360 degrees relative to the chassis assembly.