Modular staircase construction
OwnerLynn H. Smithinventor
Life of this patent
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Abstract
A staircase structure, representatively at least partially curved, is constructed from longitudinal modules each having tread, riser and stringer portions. In one embodiment of the construction technique, stringer portions of the modules are longitudinally telescoped with one another and then intersecured so that the interfitted modules form successive longitudinal portions of the assembled staircase structure. In another embodiment of the construction technique, stringer portions of the modules are vertically stacked and then intersecured. Illustratively, the riser and stringer portions of each module are of a laminated wooden construction shaped in situ on the underside of module tread portion by a CNC milling machine.
Claims29
A method of constructing a staircase structure comprising the steps of:
- providing a series of pre-assembled staircase modules each having a tread portion, a riser portion extending substantially perpendicular thereto, and a longitudinally outwardly projecting stringer portion separate from the stringer portions of the rest of the pre-assembled staircase modules;
- positioning said staircase modules in a longitudinally serial array in which the stringer portion of each module engages and longitudinally overlaps the stringer portion of each longitudinally adjacent module in a manner such that the separate stringer portions of the pre-assembled staircase modules collectively define stringer structures extending along opposite sides of the overall length of the constructed staircase structure;
- and
- intersecuring each longitudinally adjacent pair of the positioned staircase modules;
- each tread portion has a top surface;
- and
- said providing step includes the step of providing each strincier portion with a laminated configiuration defined by stringer laminae stacked in a direction perpendicular to the top surface of the associated tread portion.
A method of constructing a pre-assembled staircase module connectable in series with similar pre-assembled staircase modules to define a longitudinal portion of an overall staircase structure, said method comprising the steps of:
- providing a tread structure having top and bottom surfaces, front and rear edge portions, and laterally opposite left and right side edge portions;
- securing a downwardly projecting transverse riser structure to said front edge portion of said tread structure;
- and
- connecting elongated stringer structures to the bottom side of said tread structure in a manner such that the stringer structures longitudinally extend along and parallel to said laterally opposite left and right side edge portions of said tread structure and longitudinally project beyond said tread structure, said stringer structures being configured to engage, longitudinally overlap and be secured to the stringer structures of at least one longitudinally adjacent one of the similar pre-assembled staircase modules so as to collectively define therewith a longitudinal section of the stringer structure of the longitudinal portion of the overall staircase structure;
- said connecting step is performed by connecting elongated laminated stringer structures to the bottom surfaces of said tread structure in a manner such that the secured laminated striger structures longitudinally extend along and parallel to said laterally opposite left and right side edge portions of said tread structure and longitudinally project outwardly from said tread structure, each of said laminated stringer structures being defined by stringer laminae stacked in a direction perpendicular to said top surface of said tread structure.
A method of constructing a pre-assembled staircase module connectable in series with similar pre-assembled staircase modules to define a longitudinal portion of an overall staircase structure, said method comprising the steps of:
- providing a tread structure having top and bottom surfaces and front and rear edge portions;
- securing a downwardly projecting transverse riser structure to said tread structure;
- and
- connecting an elongated stringer portion to said tread structure in a manner such that said stringer portion longitudinally extends beneath and longitudinally beyond said tread structure,
- said stringer portion being configured to engage, longitudinally overlap and be secured to the stringer portion of at least one longitudinally adjacent one of the pre-assembled staircase modules so as to collectively define therewith a longitudinal section of the stringer structure of the longitudinal portion of the overall staircase structure
- said providing step includes the step of providing each stringer portion with a laminated configuration defined by stringer laminae stacked in a direction perpendicular to the top surface of the associated tread portion.
Dependencies are inferred from the claim text.