Claims
- 1. A floor mat disposed on a floor in combination with a floor having an upper surface; the combination comprising:
- a first mat disposed on the floor;
- the first mat including a plurality of first parallel ribs and a plurality of second parallel ribs extending substantially perpendicularly to the first parallel ribs;
- a plurality of openings being defined by the first and second ribs;
- said plurality of second parallel ribs including at least one middle rib disposed between support ribs;
- the support ribs supporting the first parallel ribs above the upper surface of the floor to form drainage channels between the support ribs;
- the support ribs supporting the middle rib above the upper surface of the floor; and
- each of the first and second ribs having an upper surface, the upper surface of the first ribs being disposed above the upper surface of the second ribs.
- 2. The combination of claim 1, wherein there are at least two middle ribs disposed between each two support ribs.
- 3. The combination of claim 1, further including:
- a frame assembly disposed on the upper surface floor and surrounding at least the perimeter of the first mat to form at least a first well that receives the first mat; and
- the frame assembly having an inner periphery that surrounds the well.
- 4. The combination of claim 1, wherein the lower surface of the middle rib being substantially coplanar with the lower surface of the first ribs.
- 5. The combination of claim 4, wherein each support rib includes a pair of shoulders having upper surfaces, the lower surface of the first ribs disposed on the shoulders.
- 6. The combination of claim 5, wherein the lower surface of each support rib is rounded.
- 7. A floor mat disposed on a floor in combination with a floor having an upper surface; the combination comprising:
- a first mat disposed on the floor;
- a frame assembly disposed on the upper surface floor and surrounding at least the perimeter of the first mat to form at least a first well that receives the first mat, the frame assembly having an inner periphery that surrounds the well;
- the first mat including a plurality of first parallel ribs and a plurality of second parallel ribs extending substantially perpendicularly to the first parallel ribs;
- a plurality of openings being defined by the first and second ribs;
- said plurality of second parallel ribs including at least one middle rib disposed between support ribs;
- the support ribs supporting the first parallel ribs above the upper surface of the floor to form drainage channels between the support ribs;
- the support ribs supporting the middle rib above the upper surface of the floor; and
- the first mat being disposed within the inner periphery of the frame and being free of connections with the frame assembly.
- 8. The combination of claim 7, wherein the lower surface of the middle rib being substantially coplanar with the lower surface of the first ribs.
- 9. The combination of claim 8, wherein each support rib includes a pair of shoulders having upper surfaces, the lower surface of the first ribs disposed on the shoulders.
- 10. The combination of claim 9, wherein the lower surface of each support rib is rounded.
CROSS REFERENCE TO RELATED APPLICATION
This application is a divisional application of U.S. Ser. No. 09/192,861 filed Nov. 16, 1998, now U.S. Pat. No. 6,042,915 which in turn is a continuation application of U.S. Ser. No. 08/822,730 filed Mar. 24, 1997, now U.S. Pat. No. 5,958,538 the disclosures of which are incorporated herein by reference.
US Referenced Citations (3)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2136472 |
Sep 1984 |
GBX |
Divisions (1)
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Number |
Date |
Country |
Parent |
192861 |
Nov 1998 |
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Continuations (1)
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Number |
Date |
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Parent |
822730 |
Mar 1997 |
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