H Shape Toothbrush

Description

BACKGROUND OF THE INVENTION

The H shape Toothbrush is an intended improvement over the U shape Toothbrush applied for patent (Ser. No. 12/554,880) by the author in 09-05-2009.

The H shape Toothbrush not only has all the benefits of U shape Toothbrush for thoroughly cleaning different surfaces of the teeth and cleaning/massaging gums at same time, but also cleans the teeth on both top and bottom jaw at same time. It doubles the efficiency of cleaning teeth and cleaning/massaging gums comparing to the U shape Toothbrush. H shape Toothbrush is a useful tool for maintaining the dental health.

SUMMARY OF THE INVENTION

The H shape Toothbrush is an intended improvement over the U shape Toothbrush, all the objectives for inventing the U shape Toothbrush are still valid for the H shape Toothbrush. Those objectives are repeated here with minor modification and addition.

The first objective of the present invention is to provide a toothbrush that can minimize the hard to reach areas especially on the back of the teeth for the ordinary toothbrush to make the tooth brushing more effective.

The second objective of the present invention is to provide a toothbrush that can clean the top, front and back of teeth at same time, and clean the teeth on both top and bottom jaw at same time in every brushing stroke to make the tooth brushing more efficient.

The third objective of the present invention is to provide a toothbrush that can follow the tooth profile and automatically adjust itself to fit teeth of different sizes.

The fourth objective of the present invention is to provide a toothbrush that uses a H shape toothbrush head moving along teeth like a train moving along its rail track to make the tooth brushing fun and enjoyable.

The fifth objective of the present invention is to provide a toothbrush that uses a toothbrush handle that can rotate with respect to the toothbrush head to allow the H shape toothbrush head moving all the way along teeth from one end to the other end continuously and smoothly to make the tooth brushing more convenient.

DETAILED DESCRIPTION OF THE INVENTION

FIGS. 1-10 are used to describe the invention. Those Figures are simple, straightforward and self-explanatory. References to those FIGs are listed here as the description of the invention.

• 1. The H Shape Toothbrush comprises a H shape toothbrush head and a toothbrush handle as shown in FIGS. 1, 3, 6, 7, 8 and 9.
• 2. The toothbrush handle is assembled onto the H shape toothbrush head through a toothbrush handle assembly which allows the toothbrush handle to rotate with respect to the H shape toothbrush head as shown in FIGS. 1, 3, 6, 7 and 8.
• 3. The H shape toothbrush head comprises 3 elastic material parts and 5 hard plastic parts. 2 elastic material parts connect the 5 hard plastic parts together to form a H shape toothbrush head with elasticity. Another elastic material part connects the H shape toothbrush head with the toothbrush handle assembly. The 5 hard plastic parts have brushes extending inward from their inner surfaces of the H shape toothbrush head facing the top, front and back of teeth on both top and bottom jaw.
• 4. The H shape toothbrush head has 8 humps on the inner surfaces of 2 hard plastic parts for controlling the deformation of the U shape toothbrush head. The locations of the 8 humps are shown most clearly in FIGS. 10A, 10B and 10C.
• 5. FIGS. 10A, 10B and 10C also illustrates the H shape toothbrush head following the tooth profile and deforming to fit teeth of different sizes through using elastic material and hump design.

DESCRIPTION OF THE DRAWINGS

FIGS. 1-12 show the H Shape Toothbrush of the present invention.

FIG. 1 is the Perspective View of the H Shape Toothbrush.

FIG. 2 is the Front View of the H Shape Toothbrush.

FIG. 3 is the Side View of the H Shape Toothbrush.

FIG. 4 is the Cross Section View of the H Shape Toothbrush.

FIG. 5 is the Back View (from handle side) of the H Shape Toothbrush.

FIG. 6 is the Cross Section View of the Toothbrush Handle Assembly of the H Shape Toothbrush.

FIG. 7 is the Top View of the H Shape Toothbrush.

FIG. 8 is the Bottom View of the H Shape Toothbrush.

FIG. 9 is the Top View of the H Shape Toothbrush Handle.

FIG. 10 consists of FIG. 10A, FIG. 10B and FIG. 10C.

FIG. 10A illustrates that the large teeth touches the humps inside the H shape toothbrush head and forces the toothbrush head to open wider to fit the large teeth.

FIG. 10B illustrates that the small tooth does not touch the humps and the elasticity from the elastic materials on the H shape toothbrush head contracts the toothbrush head.

FIG. 10C illustrates that the H shape toothbrush head moving along the teeth following the tooth profile.

REFERENCE CHARACTERS IN THE DRAWINGS

• 1 refers to toothbrush handle
• 2 refers to toothbrush handle assembly base
• 3 refers to a screw that is used to assemble the toothbrush handle into the toothbrush handle assembly base
• 4 refers to an elastic material part that connect the H toothbrush head and toothbrush handle assembly base to give the H toothbrush head freedom to deform
• 5 refers to a hard plastic parts with 2 humps and brushes on its inner surface for cleaning the teeth and cleaning/massage the gum
• 6, 7 and 8 are the same as the 5.
• 9 refers to a hard plastic parts with brushes on both its top and bottom surfaces for cleaning the top of the teeth on both the top and bottom jaw
• 10 refers to an elastic material part that connect hard plastic parts 6, 7 and 9, which give the H toothbrush head elasticity to deform
• 11 refers to an elastic material part that connect another elastic material part 4, hard plastic parts 5, 8 and 9, which give the H toothbrush head elasticity to deform
• 12 refers to a hump on the inner surface of a hard plastic part, which is used to control the deformation of the H shape toothbrush head to fit for the teeth of different sizes
• 13 to 19 are the same as the 12.