Abstract: A manually powered treadmill includes a front rotatable element and a rear rotatable element coupled to a frame; a bearing assembly at least partially supporting one of the front or rear rotatable elements; and a running belt disposed about the front and rear rotatable elements. The bearing assembly includes a predefined low viscosity bearing fluid. The running belt defines a non-planar running surface. The running belt includes a first endless belt and a plurality of slats, each slat having a first side and a second side and coupled to the first endless belt. Each slat in the plurality of slats defines at least one aperture, and the at least one aperture is structured to receive a fastener to facilitate coupling to the first endless belt.

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.

Abstract: A brushing device including a motor having an eccentric drive shaft, an output shaft operably connected to the motor, and a power train assembly coupled between the eccentric drive shaft and the output shaft. The power train converts rotation of the eccentric drive shaft into an oscillating movement of the output shaft. The power train includes one or more conservation features that absorb energy when the output shaft rotates in a first direction and reapply energy to the output shaft when it rotates in a second direction.

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.