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| Number | Title | Issue Date |
| 7946085 | Stair stringer assembly A stringer assembly includes a support element, a plurality of brackets and a plurality of alignment elements. The brackets are connected to the support element, and each bracket includes a rise indicator corresponding to a desired rise dimension and a run indicator... | 05/24/2011 |
| 7377080 | Stowable spiral staircase system for overhead space access A staircase system (2) includes a rail element (40) and multiple stair elements (42). Baluster elements (44) are coupled to the rail element (40) and to the stair elements (42). A center support system (46) is coupled... | 05/27/2008 |
| 7127853 | Process for producing polyethylene pipe resins A polyethylene resin comprising from 35 to 49 wt. % of a first polyethylene fraction of high molecular weight and from 51 to 65 wt. % of a second polyethylene fraction of low molecular weight, the first polyethylene having a density of up to 0.930 g/cm3, ... | 10/31/2006 |
| 7073297 | Component and method for restoring a stairway A fiberglass molded stairway component and method of using the component enables an old stairway to be removed and replaced by a new stairway while making reuse of the existing stringers and using new stair supports or stair supports previously used with the stairwa... | 07/11/2006 |
| 7047699 | Sandwich plate stepped risers A two-tired seating riser for a sports stadium comprises upper and lower metal plates bonded together by a solid elastomer core. The elastomer core has different thicknesses in the treads and rises. The lower tread has a lip portion in which the metal plates are fla... | 05/23/2006 |
| 7047698 | Exterior step system made from masonry units attached via a metal frame A step system made up of masonry panels of various sizes pre-formed to resemble natural stone or brick on the outside. These panels have bolts or other securing devices embedded in them at precise locations at the time of their manufacture. These securing devises al... | 05/23/2006 |
| 6968655 | Step support method for use in the manufacturing of straight or curved stairs A step support method for use in the manufacturing of straight or curved stairs comprising a plurality of cutouts and a plurality of formed flanges in a contiguous sheet of metal creating a surface for stair treads and risers to be attached. The design of which allo... | 11/29/2005 |
| 6960273 | Process for renovation of a staircase A process for the renovation of the steps of a staircase including step treads and risers, whereby, starting from the top step to be renovated, starting on the step tread thereof, a step tread plate provided with an impact section that protrudes beyond the step trea... | 11/01/2005 |
| 6920725 | False tread modules False return tread modules are provided that include a treadplate, a bullnose joined to the treadplate, a riserplate, and a stairbracket joined to the riserplate, such that the stairbracket/riserplate subassembly and treadplate/bullnose subassembly form the false tr... | 07/26/2005 |
| 6895717 | Component and method for restoring a stairway A fiberglass molded stairway component and method of using the component enables an old stairway to be removed and replaced by a new stairway while making reuse of the stringers and using new stair supports or stair supports previously used with the stairway being r... | 05/24/2005 |
| 6758016 | Adjustable support for steps A support for steps, having the shape of a triangular corner plate to be installed one after the other along a stringer. The sides of this support are reinforced, horizontally and vertically by a 90 degree fold, to fix the steps and risers. The ends are wider and po... | 07/06/2004 |
| 6665987 | Staircase, staircase repair device and methods of fabricating same In the first embodiment, a staircase repair device or kit is provided which includes two components, namely, a stair tread repair member and a riser repair member. These members are placed on an existing staircase to provide a protective covering. In the ... | 12/23/2003 |
| 6634145 | Modular stone stair system A modular stone stair system using a plurality of modules in the form of stringers, risers, treads and landings in standardized thicknesses and widths. The risers, landings (if any) and treads have different widths dependent upon the width of the stairs d... | 10/21/2003 |
| 6574923 | Arrangement for a grandstand An arrangement for a grandstand having a series of sections, each section having a pair of sloping joists each provided with a number of vertical seating beam pillars and a number of walkways between the joists. Fastening and securing devices are provided... | 06/10/2003 |
| 6516574 | Modular stairway system, method for erecting stairway and kit therefor The present staircase includes a permanent framing made of metallic stringers, one of which being typically secured to a half-timbering. vertically extending step supports are secured along the stringers and each include upper and front flanges adapted to... | 02/11/2003 |
| 6397529 | Adjustable modular staircase The adjustable modular staircase includes two stringers for rigid attachment to a building structure in parallel, opposed relationship to each other, a plurality of axially parallel pins protrude out of each of the stringers and are spaced equidistant apa... | 06/04/2002 |
| 6318033 | Staircase, staircase repair device and methods of fabricating same In the first embodiment, a staircase repair device or kit is provided which includes two components, namely, a stair tread repair member and a riser repair member. These members are placed on an existing staircase to provide a protective covering. In the ... | 11/20/2001 |
| 6230454 | Universal modular tread and riser unit A universal modular tread and riser unit for positioning on a stairway stringer having a predetermined slope. The unit, including an elongate tread wall having two ends including a connecting end and a free end. An elongate riser wall having two ends incl... | 05/15/2001 |
| 6173540 | Stair tread An improved stair tread for use in both residential and commercial construction directly beneath carpet and padding material is disclosed. The improved stair tread is fabricated from an engineered wood product such as Oriented Strand Board made of wood st... | 01/16/2001 |
| 6125598 | Modular traditional staircase A modular stairway assembled from a stringer having a relatively planar, flat top, an initial step module fixed adjacent a lower end of the stringer, and several intermediate step modules attached to the stringer. The initial step module includes an upper... | 10/03/2000 |
| 6112480 | Modular Staircase A stairway 2 is fabricated using a plurality of load bearing modules 4 that are attached to form a box beam 60 that can be freestanding. Each module 4 included flat vertical front and rear panels 6, 20 that are joined by vertical inside and outside panels... | 09/05/2000 |
| 6088977 | Method and apparatus for making stairs A bracket for use in manufacturing a step supported by a stringer. The bracket includes an anchor block to which a tread for a step may be attached, a pair of frames flanking the anchor block and fixed thereto, and markings formed on at least one of the f... | 07/18/2000 |
| 6029408 | Pre-fabricated step and stairway system The present invention is a prefabricated step and stairway system, where the prefabricated step is preferably a precast concrete step having an elongate body substantially triangular in cross-section having a first side as a tread, a second side as a rise... | 02/29/2000 |
| 5941030 | Step support brace for a swimming pool A step support brace especially for a swimming pool stair assembly includes vertically extending positioning posts that extend from the top of each horizontal riser portion of the brace associated with a stair tread some or all of which are slidably posit... | 08/24/1999 |
| 5916099 | Integral corner wall and inside stair structure for a swimming pool A corner stair and a corner wall of a pool are molded into an interal structure. A top step and riser are located at the required height to permit the lead bar of a swimming-pool automatic cover to be positioned over the step and against the riser such th... | 06/29/1999 |
| 5899032 | Stair structure A stair system that uses angled brackets to form risers. The brackets are attached to wooden or metal boards. These boards are standard dimensional lumber. The ends of the boards must be cut to position them to support the stair, but no other cutting is r... | 05/04/1999 |
| 5806254 | Modular tread and riser unit Flanged Triangular elements for constructing a stairway which can be joined to provide a beam having adjacent tread and riser mounting portions.... | 09/15/1998 |
| 5791101 | Stair support assembly A stair support device is provided for installation on the upper surface of an inclined stair stringer. The device is foldable from a sheet metal template so as to define right-triangular first and second spaced-apart vertical sidewalls, positionable with... | 08/11/1998 |
| 5778610 | Modular stair jack system A stair jack for constructing a staircase between an upper surface and a lower surface. The stair jack has a stair support member with a top inclined edge and a plurality of tread supports adapted to be fixedly coupled to the stair support member. Each tr... | 07/14/1998 |
| 5752350 | Modular stair support system useable for a pool or spa A modular support system useable for a pool or spa is disclosed. A prefabricated pool or spa stairs may be supported by utilizing a plurality of stiffeners each extending along the length of the bottom of a step of the prefabricated stairs. Within the sti... | 05/19/1998 |
| 5737884 | Spiral stair case A spiral stair case wherein segments of the outside stringer framework and segments of the central column are forming corresponding polygonal segments, wherein the spiral stair case preferably is made in octagonal polygonal segments, wherein one segment o... | 04/14/1998 |
| 5720136 | Modular staircase A stairway 2 is fabricated using a plurality of load bearing modules 4 that are attached to form a box beam 60 that can be freestanding. Each module 4 included flat vertical front and rear panels 6, 20 that are joined by vertical inside and outside panels... | 02/24/1998 |
| 5713166 | Monocoque staircase and method for joining wooden pieces A staircase of monocoque construction comprises a pair of stringers, a series of successive and alternating treads and risers and nosings which are all made of solid wood or of composite wood such as O.S.B., pyrock, plywood, particle board, etc. At locati... | 02/03/1998 |
| 5660009 | Metal stairway for a residence A metal stairway constructed on site in a metal framed house. The stair steps are supported between a pair of trimmed sheet metal stringer panels on each side of the stairway. Each step of the stairway is formed of metal treads and risers cut to appropria... | 08/26/1997 |
| 5592801 | Mobile stair system for pets and animals, method of making said mobile stair system This invention relates to a mobile stair system for pets and other small animals, a method of making said mobile stair system, and a method of producing elements of said mobile stair system. Said mobile stair system comprises a number of crossbars, a left... | 01/14/1997 |
| 5553421 | Structural building components Prefabricated, preferably pre-cast concrete, stringers and treads can be employed to provide either a staircase of any required inclination, a horizontal walkway or a ramp of a required inclination. In all these applications, the same standardized stringe... | 09/10/1996 |
| 5535557 | Non-laminated, self-configuring, variable pitch spiral stairset and method of fabricating spiral stairway A stairset for the fabrication of a spiral stairway on-site, and a method for the assembly of the stairset. This stairset includes a central support to receive spacers to position a plurality of stair tread units at a selected separation (riser height), t... | 07/16/1996 |
| 5531048 | Step for a stairway and method for making same A method is provided for manufacturing or converting a stairway made from wood-composite materials to a stairway which appears for all intents and purposes to be made from architectural solid wood materials. The method contemplates providing one or more s... | 07/02/1996 |
| 5493823 | Three dimensional stringer pads for carpeted staircases A three dimensional stringer pad affixed to the stringers of a staircase prior to applying carpet. The stringer pad is dimensioned to substantially completely overlay the stringer, has an inner flat surface which lies substantially flush on the stringer a... | 02/27/1996 |
| 5357724 | Stair tread A stair tread, in which synthetic rubber is used to encase metal side core portions arranged at the side edges of a substantially horizontal core section at a downward right-angle thereto. A lip is provided along the side edges of the tread surface. The l... | 10/25/1994 |
