摘要:
A toothbrush has a plurality of replaceable cleaning heads configured to clean a plurality of teeth surfaces simultaneously. The cleaning heads may be configured to clean one row of teeth at a time or bottom and top teeth simultaneously. In a configuration for cleaning bottom and top teeth simultaneously, the cleaning heads for the top teeth are movably offset from the cleaning heads for the bottom teeth to accommodate occlusion. The toothbrush may be manual or electrical. Accessories such as a tongue and cheek scraper and tooth pick are available.
摘要:
A container insert for elevating liftable contents includes a shaft. A base is attached to the bottom end of the shaft. A movable platform is slidingly disposed on the shaft. The platform is configured to support liftable contents in the container and to slide from the bottom end of the shaft towards the top end of the shaft and stopping at one of a plurality of discrete points along the length of the shaft without retreating towards the bottom end. The shaft includes a plurality of engagement details (e.g., indentations) defining the plurality of discrete points. In an embodiment, latches are operably coupled to the platform and configured to pivot from an engaged position to a released position under the influence of weight and or buoyancy as the insert is inverted and returned to an upright position. The latches which engage the engagement details in the engaged position prevent the platform from retreating towards the bottom end when the latch is in the engaged position. In another embodiment the container insert includes a shaft with engagement projections, such as a plurality of resilient fingers defining the plurality of discrete points. Each finger is configured to pivot from an angled engagement position to a bent release position with the finger urged against the shaft, and the fingers are configured to prevent the platform from retreating towards the bottom end when the latch is in the engaged position. A central opening of the platform is configured to urge the engaged finger against the shaft and allow the urged finger to pass through the central opening when the insert is inverted due to weight of the platform.