Precision built staircase

Abstract

A precision built staircase kit is disclosed. The kit includes a plurality of stringers that include a structural stringer, a decorative stringer and a winder stringer that are cut by a high precision machine, a skirt board, a plurality of risers with a pair of ends and a plurality of squares. The staircase also includes a plurality of winder treads wherein the stringers, the skirt board, the risers and the treads form a plurality of stairs, a recessed tread end cap, one or more cover joints and corner joints to cover a plurality of cuts, a decorative panel disposed on the back of staircase after the stairs are formed and a packaging box that stores a plurality of unassembled staircase components and that forms a cabinet or a closet when empty. The staircase may be assembled from a kit with a method of assembling.

1 . A precision built staircase kit for a precision built staircase, comprising:
 a plurality of stringers having a pre-profiled structural stringer with a horizontal, a vertical or an angled outside radius, a square or an inside radius, the stringers comprising:
 one or more risers; 
 one or more treads; 
 a set of winder stringers with an outside radius or a square; 
 a winder tread plank; 
 a pre-profiled skirt board or a pre-profiled standard board; 
 a decorative horizontal stringer or a decorative vertical stringer or a decorative angled stringer with an outside radius or a square or a decorative inside stringer, the decorative stringer is pre-cut at 45 degrees or more at one or more riser heights levels; 
 a plurality of squares, a plurality of bars or a plurality of reversible stringer supports with a horizontal top; 
 a plurality of winder treads wherein the stringers, the treads, the risers, the winder skirt board, the starter winder treads plank, the winder risers and the winder treads with a 90 degrees perpendicularly short flat nose fit in the starter winder tread and a rim tread adapted to a nose shape, one or more slider extenders and a reversible molding to form a plurality of stairs; 
 a recessed tread and end cap for an outside radius or a square cut and the inside radius; 
 a pre-shaped outside square cover; 
 an angled square cover; 
 a pre-shaped inside radius cover; 
 one or more cover joints and one or more corner joints to cover a plurality of skirt board cuts; 
 a decorative panel disposed on a back of the staircase after the stairs are formed; 
 a packaging box storing a plurality of unassembled staircase components that forms an open shell, a cabinet or a closet when empty; 
 a reversible stringer support; 
 a tread rim, one or more slider extenders and a reversible molding; 
 a plurality of tread rim blocs; 
 a plurality of L-shape flat flanges; 
 a plurality of screws selected from the group consisting of a plurality of round head screw, a plurality of type 17 screw, a plurality of tempered screw or a plurality of #11 screw and higher, the screws are painted different colors in regard to the screw length; 
 an installation kit to assemble the staircase components including all necessary screws to complete the installation of the staircase and to facilitate assembly of the staircase; and 
 a reversible support, a winder starter winder treads plank, a tread rim, a tread rim extender tread, an outside skirt board corner joint, a skirt board starter joint, a skirt board ender joint, a middle skirt board joint, a reversible stringer-tread support and a plurality of corresponding caps to accommodate installing the staircase with a plurality of attachment screws having a threaded portion with a distal end with a self-drill end and a non-threaded portion to accommodate a thickness of the tread. 
   
     
     
         2 . The staircase kit according to  claim 1 , wherein the staircase components are profiled reversed face to face from top to bottom or from bottom to top from a panel with a CNC router machine. 
     
     
         3 . The stair kit according to  claim 2 , wherein the stringers and skirt boards are profiled reverse face to face from top to bottom or from bottom to top, from the panel with the CNC router machine around the staircase components in one pass and with or without one or more grooves. 
     
     
         4 . The staircase kit according to  claim 2 , wherein the CNC router machine profiles most of the staircase components from a reverse face to face panel. 
     
     
         5 . The staircase kit according to  claim 2 , wherein the CNC router machine is reverse face-to face for raw material economy in the range of 26% to 38% for a first set of structural stringers and eliminates the need to make another set of structural stringers when the staircase is installed. 
     
     
         6 . The staircase kit according to  claim 1 , wherein the precision built staircase is assembled in a few hours that is in compliance with various building codes and standards. 
     
     
         7 . The staircase kit according to  claim 1 , wherein the horizontal top square or bar accommodates one or more disposed auto-adhesive spacer pieces with one or more reversed tapered holes drilled from top of the horizontal top square or bar tread. 
     
     
         8 . The staircase kit according to  claim 7 , wherein the spacer pieces are made of resilient or spongy material of any dimension and shape. 
     
     
         9 . The staircase kit according to  claim 1 , wherein the reversible tread support is shaped with a tong overlapping at a longest top horizontal side, the reversible tread support having at least one reversed tapered hole drilled from top of said tread support. 
     
     
         10 . The staircase kit according to  claim 1 , wherein the risers have one or more angled holes, pre-drilled and coupled directly underneath of the bottom back of the nose tread. 
     
     
         11 . The staircase kit according to  claim 1 , wherein the risers are angled, pre-drilled and coupled directly underneath of the bottom back of the nose tread with at least one or more grooves at top. 
     
     
         12 . The staircase kit according to  claim 1 , wherein the risers are coupled directly underneath of the bottom back of the nose tread with at least one or more grooves at top. 
     
     
         13 . The staircase kit according to  claim 1 , wherein the risers have one or more lines to identify where to couple the bottom riser to the rear of the tread at the lowest line after cut from the bottom of the height of the riser. 
     
     
         14 . The staircase kit according to  claim 1 , wherein the risers have one or more grooves at the front bottom for a fit and to minimize glue overflow. 
     
     
         15 . The staircase kit according to  claim 1 , wherein the risers are precut at each end of the risers at a 45 degree angle or more. 
     
     
         16 . The staircase kit according to  claim 1 , wherein the regular and recessed treads have one or more grooves at the rear of the tread. 
     
     
         17 . The staircase kit according to  claim 1 , wherein the radius treads has a radius at the bottom rear of the tread. 
     
     
         18 . The staircase kit according to  claim 17 , wherein the radius treads have the radius at the bottom rear of the tread with one or more grooves. 
     
     
         19 . The staircase kit according to  claim 1 , wherein the regular treads have one or more grooves at the rear of the tread. 
     
     
         20 . The staircase kit according to  claim 1 , wherein the radius or recessed treads have a radius at a bottom rear of the treads. 
     
     
         21 . The staircase kit according to  claim 1 , wherein the radius or recessed treads have a radius at a bottom rear of the tread with one or more grooves. 
     
     
         22 . The staircase kit according to  claim 1 , wherein the radius, the regular or the recessed treads have a slot at a bottom front of the tread with or without grooves, the treads receive a dowel emerging from a top of the riser. 
     
     
         23 . The staircase kit according to  claim 1 , wherein the installation kit includes a plurality of screws to assemble all of the staircase components. 
     
     
         24 . The staircase kit according to  claim 1 , wherein the staircase components are made of material selected from the group consisting of composite material, hardwood, softwood, aluminum, steel, concrete, marble, granite, laminated material, plywood, LVL, LSL, engineered material, kiln-dried material, rough material or prefinished material. 
     
     
         25 . The staircase kit according to  claim 24 , wherein the staircase components are assembled in a few minutes and are in compliance with one or more building codes and standards. 
     
     
         26 . The staircase kit according to  claim 1 , further comprising a packaging box that stores a plurality of unassembled staircase components and that forms an open shell, a cabinet or a closet when empty. 
     
     
         27 . The staircase kit according to  claim 1 , wherein a plurality of pre-drilled apertures and a plurality of grooves minimize any excess overflow of glue to the treads, the risers and the stringers when assembled together. 
     
     
         28 . The staircase kit according to  claim 1 , wherein a plurality of skirt boards that are temporarily or permanently utilized at a plurality of predetermined heights are attached securely with one or more covers and one or more corner joints and are covered with moldings profiled at 91 degrees or more from a back of any skirt boards. 
     
     
         29 . The staircase kit according to  claim 1 , wherein a plurality of decorative stringers that are temporarily or permanently utilized at a plurality of predetermined heights are attached securely with one or more covers and one or more corner joints and are covered with moldings profiled at 91 degrees or more from a back of any of the decorative stringers. 
     
     
         30 . The staircase kit according to  claim 1 , wherein a plurality of tread rims, a plurality of slider extenders and a plurality of reversible moldings are utilized to hide one or more nails or one or more screws used to couple the treads and the risers to the stringers. 
     
     
         31 . The staircase kit according to  claim 1 , wherein the structural stringers, the decorative stringers, the skirt boards, the treads and the risers are made of kiln dried material, engineered material or composite material that will minimize warp, curve, crack or split. 
     
     
         32 . The staircase kit according to  claim 1 , wherein the precision built staircase components are sold and kept in stock across a plurality of distributors, a plurality of retailers, a plurality of agents, a plurality of installers, a plurality of pre-assemblers, a plurality of finishers and a plurality of do-it-yourself suppliers on the market. 
     
     
         33 . A method for assembling a precision built staircase kit, comprising the steps of:
 acquiring a plurality of staircase components;   preparing a plurality of precision built staircase components from the staircase components with a piece of precision machinery;   transporting the precision built staircase components to a jobsite; and   assembling from top to bottom, the precision built staircase components on the jobsite to form the precision built staircase.   
     
     
         34 . The method according to  claim 33 , wherein one or more skirt boards and one or more winder skirt boards are attached in a few minutes to a wall. 
     
     
         35 . The method according to  claim 33 , wherein the precision machinery is a CNC router machine. 
     
     
         36 . The method according to  claim 35 , wherein the CNC router machine reversed face-to face from top to bottom and from bottom to top for raw material economy in the range of 26% to 38% for a first set of structural stringers and eliminate the need to make another set of structural stringers when the staircase is installed. 
     
     
         37 . The method according to  claim 33 , wherein decorative stringers and skirt boards are profiled with a precision machinery like the CNC router machine and installed in one or more length sections. 
     
     
         38 . The method according to  claim 37 , wherein the structural stringers, the decorative stringers and the skirt boards are made of kiln dried material or engineered or composite materials and will minimize warp, curve, crack or split. 
     
     
         39 . The method according to  claim 33 , wherein a plurality of skirt boards that are temporarily or permanently utilized at a plurality of predetermined heights are attached securely with one or more covers and one or more corner joints, the skirt boards are coupled at any usual degrees to the tread rims, the extenders and the reversible moldings. 
     
     
         40 . The method according to  claim 33 , wherein the precision built staircase components are sold as individual components or in a staircase kit and kept in stock across a plurality of distributors, a plurality of retailers, a plurality of agents, a plurality of installers, a plurality of pre-assemblers, a plurality of finishers and a plurality of do-it-yourself suppliers on the market.