Sandals with drainage system
A sandal with a drainage system is provided. The sandal includes a footbed having an upper support surface, a bottom sole, and a central portion therebetween. A plurality of drainage apertures are provided on the upper support surface of the footbed. A vertical drainage channel extends from each drainage aperture into the central portion of the footbed. A plurality of horizontal drainage channels extend within the central portion of the footbed from the vertical drainage channels to exit apertures about a peripheral edge of the sandal.
1. Field of the Invention
The present invention relates to articles of footwear, such as sandals, which include a drainage system.
2. Related Art
Sandals, such as “flip-flops,” “slides,” “thongs,” and other similar types of footwear, are often worn in environments where people participate in recreational water activities. Sandals are easy to put on and take off, and are often put onto wet feet when a person exits a water environment. As such, the upper surface of the sandal can become wet and slippery. Accordingly, it is desirable to drain water away from the surface of the sandal. It is also desirable to keep the water away from the underside of the sole of the sandal to minimize water under the sandal, thereby minimizing the chance of the bottom of the sandal slipping on wet ground.
Most prior sandal designs do not provide for any sort of drainage, and particularly, do not provide for any drainage from an upper surface of the sandal, through the footbed, and to the peripheral edge of the sandal. Accordingly, what is desired, and has not heretofore been provided, is a sandal with a drainage system to drain water from the upper surface of the sandal, through the footbed and out a drainage channel to exit apertures about the peripheral edge of the sandal.
SUMMARY OF THE INVENTIONThe present invention provides a sandal with a drainage system. The sandal includes a footbed having an upper support surface, a bottom sole, and a central portion therebetween. A retaining strap is interconnected with the footbed for retaining the sandal on a foot. A plurality of drainage apertures are provided on the upper support surface of the footbed. A vertical drainage channel extends from each drainage aperture into the central portion of the footbed. A plurality of horizontal drainage channels extend within the central portion of the footbed from the vertical drainage channels to exit apertures about a peripheral edge of the sandal.
In one embodiment, the sandal of the present invention includes two forward drainage apertures on the upper support surface of the footbed with forward vertical drainage channels extending from each aperture into the central portion of a footbed. A forward horizontal drainage channel extends from a medial side to a lateral side of the peripheral edge of the sandal and interconnects with the forward vertical drainage channels. The sandal also includes two midsole drainage apertures in the upper support surface from which midsole vertical drainage channels extend into the central footbed. A midsole horizontal drainage channel extends from a medial side to a lateral side of the peripheral edge of the sandal and interconnects with the midsole vertical drainage channels. The sandal further includes two heel drainage apertures in the upper support surface from which extend heel vertical drainage channels that interconnect with a horizontal heel drainage channel, which extends from a medial side to a lateral side of the peripheral edge of the sandal. The sandal additionally includes a rear drainage aperture in the upper support surface from which extends a rear vertical drainage channel that connects with a horizontal drainage channel, which extends rearward to a back portion of the peripheral edge of the sandal.
In another embodiment, the sandal of the present invention includes two forward drainage apertures on the upper support surface of the footbed with forward vertical drainage channels extending from each aperture into the central portion of a footbed. Forward horizontal drainage channels interconnect with each vertical drainage channel, and extend from each vertical drainage channel to the peripheral edge of the sandal. The sandal also includes two midsole drainage apertures in the upper support surface from which midsole vertical drainage channels extend into the central footbed. Midsole horizontal drainage channels interconnect with each midsole vertical drainage channel, and extend from each midsole vertical drainage channel to the peripheral edge of the sandal. The sandal further includes two heel drainage apertures in the upper support surface from which extend heel vertical drainage channels that interconnect with horizontal heel drainage channels, which extend from the heel vertical drainage channels to the peripheral edge of the sandal. The sandal additionally includes a rear drainage aperture in the upper support surface from which extends a rear vertical drainage channel that connects with a horizontal drainage channel, which extends rearward to a back portion of the peripheral edge of the sandal. In this embodiment, the number and location of drainage apertures can be varied, but each drainage aperture is associated with a dedicated drainage channel, including a vertical and a horizontal drainage channel.
BRIEF DESCRIPTION OF THE DRAWINGSOther important objects and features of the invention will be apparent from the following Detailed Description of the Invention taken in connection with the accompanying drawings in which:
The present invention provides a sandal with a drainage system. The sandal includes a footbed having an upper support surface, a bottom sole, and a central portion therebetween. A retaining strap is interconnected with the footbed for retaining the sandal on a foot. A plurality of drainage apertures are provided on the upper support surface of the footbed. A vertical drainage channel extends from each drainage aperture into the central portion of the footbed. By the term “vertical” it is meant a direction generally perpendicular to the footbed. A plurality of horizontal drainage channels extend within the central portion of the footbed from the vertical drainage channels to exit apertures about a peripheral edge of the sandal. By the term “horizontal” it is meant a direction generally parallel to the bottom sole of the sandal. Of course, the horizontal channels could be pitched to aid drainage, if desired.
The sandal of the present invention is shown in
The footbed of the present invention includes a three layer construction: an upper surface 20, a bottom sole (
The upper surface of the footbed has a plurality of drainage apertures including forward drainage apertures 30A, midsole drainage apertures 30B, heel drainage apertures 30C, and rear drainage aperture 30D. The number of drainage apertures, as well as the location of the drainage apertures, can be varied as desired.
As can be seen in phantom in
In use, water drains from the upper surface 20 of the sandal 10 through the drainage apertures 30A, B, C, D into the vertical drainage channels 32A, B, C, D, through the horizontal drainage channels 34A, B, C, D and out the exit apertures 36A, B, C, D of the peripheral edge 20 of the sandal 10. As such, if the sandal 10 is submersed in water, or exposed to water because a wet bather steps into a pair of the sandals, water will quickly drain off the upper surface 20, through the footbed, out the exit apertures, and away from the shoe to minimize the possibility of slipping, either by the foot slipping on the upper surface of the sandal or the sole of the surface slipping on wet ground. Additionally, because of this drainage feature, the sandal will be maintained in a condition that is comfortable to wear.
The apertures and drainage channels of the present invention can be formed in accordance with what is known in the art. The drainage system can be formed during the manufacture of the components of the sandal, i.e., during molding of the footbed, or the system can be created after the footbed is manufactured by removing material therefrom. In a preferred embodiment of the present invention, the footbed is molded ethyl vinyl acetate (EVA), but of course, other suitable materials could be used. For example, a rubber outsole could be used. After molding, the footbed is die cut and the upper is lasted to it. The footbed could be glued or otherwise attached to the midsole and/or a bottom sole. The sides can then be sand finished. The drainage system can be formed by drilling the apertures, vertical drainage channels, and horizontal drainage channels into the footbed. The footbed of the sandals of the present invention can be used with any desired style of upper. The upper can be cut from a desired material and sewn to the footbed, or injection molded and applied to the footbed.
Having thus described the invention in detail, it is to be understood that the foregoing description is not intended to limit the spirit and scope thereof. What is desired to be protected by Letters Patent is set forth in the appended claims.
Claims
1. A sandal comprising:
- a footbed having an upper support surface, a bottom sole and a central portion therebetween;
- an upper interconnected with the footbed for retaining the sandal on a foot;
- a plurality of drainage apertures formed in the upper support surface of the footbed;
- a plurality of vertical drainage channels extending from the drainage apertures into the central portion of the footbed; and
- a plurality of horizontal drainage channels within the central portion of the footbed extending from the vertical drainage channels to exit apertures about a peripheral edge of the sandal.
2. The sandal of claim 1, further comprising two forward vertical drainage channels extending from two forward apertures in the upper support surface to a forward horizontal drainage channel extending from a medial side to a lateral side of the peripheral edge of the sandal.
3. The sandal of claim 2, further comprising two midsole vertical drainage channels extending from two midsole apertures in the upper support surface to a midsole horizontal drainage channel extending from a medial side to a lateral side of the peripheral edge of the sandal.
4. The sandal of claim 3, further comprising two heel vertical drainage channels extending from two heel apertures in the upper support surface to a heel horizontal drainage channel extending from a medial side to a lateral side of the peripheral edge of the sandal.
5. The sandal of claim 4, further comprising a rear vertical drainage channel extending from a rear aperture in the upper support surface to a rear horizontal drainage channel extending to the back portion of the peripheral edge of the sandal.
6. The sandal of claim 1, wherein each drainage aperture has a single vertical drainage channel connected to a dedicated horizontal drainage channel.
7. The sandal of claim 6, further comprising two forward vertical drainage channels extending from two forward apertures in the upper support surface to two forward horizontal drainage channels, each of the forward horizontal drainage channels extending from a forward vertical drainage channel to the peripheral edge of the sandal.
8. The sandal of claim 7, further comprising two midsole vertical drainage channels extending from two midsole apertures in the upper support surface to two midsole horizontal drainage channels, each of the midsole horizontal drainage channels extending from a midsole vertical drainage channel to the peripheral edge of the sandal.
9. The sandal of claim 8, further comprising two heel vertical drainage channels extending from two heel apertures in the upper support surface to two heel horizontal drainage channels, each of the heel horizontal drainage channels extending from a heel vertical drainage channel to the peripheral edge of the sandal.
10. The sandal of claim 9, further comprising a rear vertical drainage channel extending from a rear aperture in the upper support surface to a rear horizontal drainage channel extending to the back portion of the peripheral edge of the sandal.
11. The sandal of claim 1, wherein the upper comprises a strap.
12. The sandal of claim 11, further comprising a thong extending between the footbed and the strap.
Type: Application
Filed: Apr 1, 2004
Publication Date: Oct 6, 2005
Inventor: John Cobian (San Marcos, CA)
Application Number: 10/815,466