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| Number | Title | Issue Date |
| 8033063 | Stair system A stair system including an upper tread having a substantially planar body portion, a stair nose portion located at one side of the planar body portion, and a dado located behind the stair nose portion, at least one lower tread, the lower tread having a substantiall... | 10/11/2011 |
| 7971399 | Stairway A stairway having an alternating series of risers and treads wherein two risers and a tread form a step structure for use in constructing the stairway. The step structure including a first riser having a front portion and a rear portion, a tread having a support sur... | 07/05/2011 |
| 7849643 | Structural step unit with run portion and rise portion A riser is formed by a structural sandwich plate member in the run or tread portion but a simple steel plate in the rise portion. This riser is cheaper and simpler to manufacture than risers in which both the run and tread are formed by structural sandwich plate mem... | 12/14/2010 |
| 7380376 | Non-slip structure This invention relates to a non-slip structure, which is highly efficient in preventing a slip with no trouble caused by a through hole, thereby enhancing reliability. The non-slip structure of this invention is characterized in that a portion of a metal plat... | 06/03/2008 |
| 7191568 | Modular safety surface and method for preparing the same A modular safety unit having a skid resistant surface for use in a location where it is desirable to add a skid resistant surface for traction comprising a base made of resin, the base having a top side and a bottom side; an aggregate made from calcined bauxite, and... | 03/20/2007 |
| 7165362 | Glass support member A monolithic glass member for supporting loads is disclosed. The glass member includes a plurality of glass sheets that are laminated together with one or more bonding layers. One of the glass sheets has a cut out at an edge thereof to receive a connector. The conne... | 01/23/2007 |
| 7096592 | Method and apparatus for locating hole positions on an adjustable stair stringer A stairway can be constructed by using movable tread/riser supports placed along a stairway stringer and the supports can be moved as a group or individually to accommodate a stairway slope of any desired degree. It is desirable to mark a stringer for the uniform eq... | 08/29/2006 |
| 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 |
| 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 |
| 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 |
| 6826875 | Temporary stairway rail and baluster support A temporary stairway rail support for erecting a temporary stairway rail for use and safety during the construction phase of the building, the temporary stairway rail support having planar base member in contact with a portion of the stair tread, an L-shaped open st... | 12/07/2004 |
| 6691469 | Flashing for roof penetrations A flashing for sealing about a roof penetration includes a first sheet having a first edge. The first sheet includes a substantially planar portion and a portion that is inclined with respect to the planar portion. The inclined portion has a recess open a... | 02/17/2004 |
| 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 |
| 6543191 | Prefabricated stairway and method A stairway includes a one-piece fiber reinforced plastic base having a plurality of riser surfaces and tread surfaces forming steps and a landing surface. The tread surfaces and the landing surface are configured to include an integral reinforcement surfa... | 04/08/2003 |
| 6523310 | Tread and handrail combination structure of a staircase The present invention relates to a tread and handrail combination structure of a staircase, including a support post, multiple helically laminated treads mounted on the support post, and multiple juxtaposed handrails. Each tread has an outer side provided... | 02/25/2003 |
| 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 |
| 6467234 | Stairway system A prefabricated stairway module (10, 11) comprises a first step and a second step, each step (14) having a tread member (13) and a riser member (15). The stairway module further has fixing means (31) for fixing the module to a sloping surface on which it ... | 10/22/2002 |
| 6408577 | Steps for swimming pool These steps for a swimming pool are noteworthy in that they possess, projecting from the inside of the recessed front face (1a), at least one solid part (1d) that acts as a backing or support produced directly by a process of injection moulding a plastics... | 06/25/2002 |
| 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 |
| 6374556 | Concrete elevation assembly, hollow concrete block, and method of making In a method for forming a block having a core, the core is formed in a vertical orientation, providing for increased control of wall thickness. The block has a projection on one surface and a groove on an opposing surface. The block core is disposed paral... | 04/23/2002 |
| 6345475 | Stair guard Pivotably mounted barriers extending across a portion of and staggered in an alternating manner from opposite sides and spaced apart as to permit directed travel up or down stairs or staircase. Barriers extend across staircase to the extent that in additi... | 02/12/2002 |
| 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 |
| 6176049 | Concrete elevation assembly, hollow concrete block, and method of making In a method for forming a block having a core, the core is formed in a vertical orientation, providing for increased control of wall thickness. The block has a projection on one surface and a groove on an opposing surface. The block core is disposed paral... | 01/23/2001 |
| 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 |
| 6155007 | Surface tread for a spiral staircase A spiral staircase includes a newel post and a plurality of steps which are mounted around the newel post. Each step has a surface tread. The tread is set up higher than the inner side. The slope of the tread at the outer side of the tread is sharper than... | 12/05/2000 |
| 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 |
| 6082061 | Stair tread A stair tread and method of manufacturing same is disclosed. The stair tread comprises a rigid frame which is encapsulated with a structural plastic material. In the preferred embodiment, the rigid frame is made from steel and the encapsulating structural... | 07/04/2000 |
| 6044598 | Elongated member of extruded plastic suitable for flooring, decking, seating, and like uses An elongated member suitable for flooring, decking, or seating, having a top plate formed as an extrusion of plastic material suitable for overlying a support, wherein the top plate includes ribs constituted by protruding parts of parallel, spaced apart, ... | 04/04/2000 |
| 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 |
| 5924249 | Stairway step assembly A stairway step assembly for use as an aid in climbing a stairway. The assembly is particularly useful to elderly and handicapped users who have difficulty climbing a standard stairway due to the height or rise of the steps thereof. The assembly provides ... | 07/20/1999 |
| 5907935 | Adjustable modular staircase The present invention concerns a modular and adjustable staircase, prefabricated, destined to be installed in a rigid manner, and having at least one side which is equipped with a stiffener (1). Per stair and per side having a stiffener (1), a single elem... | 06/01/1999 |
| 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 |
| 5799448 | Adjustable closed-riser metal staircase system A closed-riser, adjustable rise, staircase system is provided which allows a plurality of stair treads to be assembled into staircases having different rise heights, for example, from six inches to seven inches, while maintaining the closed-riser nature o... | 09/01/1998 |
| 5794391 | Reinforced fiberglass steps A lightweight, highly portable, yet strong, fiberglass step unit is presented. The fiberglass step unit is tapered to allow removal of the unit from the mold during the two-step manufacturing process. All of the corners and edges of the fiberglass unit ar... | 08/18/1998 |
