Claims
- 1. Stairway, comprising a pair of laterally spaced apart elongated stringers adapted to be disposed between levels of the building and a plurality of integral riser surfaces and integral tread surfaces extending between said stringers so as to form steps, said stringers, riser surfaces and tread surfaces being formed as one-piece of plastic material.
- 2. The stairway of claim 1 including a plurality of individual preformed tread members fastened on the tread surfaces.
- 3. The stairway of claim 1 including a joist attachment member disposed in a laterally extending channel formed integrally on the rear side of a topmost riser surface between the stringers.
- 4. The stairway of claim 3 wherein said fastening member is a wooden member received in said channel.
- 5. The stairway of claim 3 wherein said channel is formed in-situ about said fastening member.
- 6. The stairway of claim 1 wherein each stringer includes a first upstanding wall and a laterally extending wall.
- 7. The stairway of claim 6 wherein said laterally extending wall includes receptacles formed integrally therein to receive handrail support posts.
- 8. The stairway of claim 6 wherein each stringer further includes a second upstanding wall extending upwardly from said laterally extending wall.
- 9. The stairway of claim 6 wherein each stringer further includes an outermost wall that extends downwardly from said laterally extending wall.
- 10. The stairway of claim 9 wherein a cover panel is fastened to a lowermost edge of said outermost wall.
- 11. The stairway of claim 6 wherein a reinforcing gusset is disposed between said first upstanding wall and said laterally extending wall.
- 12. The stairway of claim 1 wherein said plastic material comprises one or more outer filled resin layers and one or more inner fiber reinforced filled resin layers applied on the outer filler resin layer(s).
- 13. The stairway of claim 12 wherein said one or more outer filled resin layers each comprises a synthetic resin and mineral particles and said one or more inner fiber reinforced resin layers each comprises a resin, mineral particles and chopped fibers.
- 14. The stairway of claim 1 wherein said tread surfaces are configured to include an integral reinforcement.
- 15. The stairway of claim 14 wherein said integral reinforcement comprises a rib extending along a length of each tread surface and having a concave cross-sectional configuration residing below a plane defined by said tread surface.
- 16. The stairway of claim 2 wherein said preformed tread members comprise an outer ceramic filled gelcoat layer and a fiber reinforced filled resin layer under said gelcoat layer.
- 17. The stairway of claim 2 wherein said preformed tread members include an integral bull nose that depends downwardly to overlap the adjacent riser surface located therebelow.
- 18. The stairway of claim 2 wherein said preformed tread members include a plurality of fasteners and said tread surface includes a plurality of holes to receive a respective fastener.
- 18. The stairway of claim 18 wherein a lower surface of each said preformed tread member includes a plurality of pilot protrusions that are received in a respective one of said holes in said underlying tread surface.
- 20. The stairway of claim 18 wherein said fasteners include an enlarged fastener head captured in each tread member and a threaded shank received in a respective hole of said tread surface.
- 21. The stairway of claim 18 wherein said fasteners each include an enlarged fastener head captured in said landing member and a threaded shank received in a respective hole of said landing surface.
- 22. In a building having an upper level and a lower level, a prefabricated stairway disposed between said levels and comprising a pair of laterally spaced apart elongated stringers fastened at an upper region to a joist of said upper level and a plurality of integral riser surfaces and integral tread surfaces extending between said the stringers so as to form steps, said stringers, riser surfaces and tread surfaces being formed as one-piece of plastic material.
- 23. The stairway of claim 22 including a plurality of individual preformed tread members fastened on the tread surfaces.
- 24. The stairway of claim 22 including a joist attachment member disposed in a laterally extending channel formed integrally on the rear side of a topmost riser surface between the stringer sections.
- 25. The stairway of claim 24 wherein said attachment member is a wooden member received in said channel and fastened to said joist.
- 26. A method of making a stairway, comprising spraying plastic material on a mold surface to form a one-piece stairway comprising a pair of laterally spaced apart stringers and a plurality of integral riser surfaces and integral tread surfaces forming steps, independently forming a plurality of preformed tread members, and fastening a respective one of said preformed tread members on a tread surface of said stairway.
- 27. The method of claim 26 wherein said plastic material comprises an outer filled resin layer is provided on said mold followed by providing a plurality of fiber reinforced filled resin layers on said filled resin layer.
- 28. The method of claim 27 wherein said outer filled resin layer comprises a synthetic resin and mineral particles and said inner fiber reinforced resin layer comprises a resin, mineral particles and chopped fibers.
- 29. Combination of a stairway having a plurality of treads made of a material selected from the group consisting of wood, metal, and concrete and at least one preformed tread member comprising plastic material fastened on at least one tread.
- 30. The combination of claim 29 wherein the tread member has a color that is different from the steps.
- 31. The combination of claim 29 wherein the tread member is fastened on a worn or damaged tread of said stairway.
- 32. A method of repairing a worn or damaged tread of a stairway made of a material selected from the group consisting of wood, metal, and concrete by fastening a preformed tread member comprising plastic material on said tread.
Parent Case Info
[0001] This application is a continuation-in-part of Ser. No. 09/711,854 filed Nov. 13, 2000.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09711854 |
Nov 2000 |
US |
Child |
09840640 |
Apr 2001 |
US |