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US 5,349,795 AGranted
Width-adjustable stairway step tread and method for constructing a stairway therewith
OwnerTerry L. French, Steven C. Johnsoninventors
Life of this patent
Estimating the term…
Abstract
A width-adjustable step tread has first and second members, each extending along at least an appendage of a width of the step tread. Each of the first and second members have identical cross-sectional shapes as defined by a web with two opposing edges. A first appendage extends along one edge of the web defining an exterior surface and a second appendage extends along the other edge of the web defining an interior surface. The interior surface of the second appendage forms a female part which receives a male part formed by the exterior surface of the first appendage so that the first appendage of each member couples in sliding engagement with the second appendage of the other member.
Claims12
A stairway comprising:
- at least a first stringer and a second stringer oriented in generally parallel spaced relative to one another, said stringers defining a length of said stairway;
- and
- a series of treads spaced along said length, each tread of said series having an adjustable width and extending at least between said first and second stringers, each said tread further having:
- a first member extending along at least a portion of said width, said first member having a first cross-sectional shape;
- and
- a second member extending along a portion greater than a remaining portion of said width, said second member having a second cross-sectional shape, said second cross-sectional shape being identical to said first cross-sectional shape, but rotated edge-to-edge in inverted orientation relative to said first cross-sectional shape, said first cross-sectional shape and said second cross-sectional shape being adapted to couple in interlocking engagement of said first member with said second member whereby said first and second members are coupled to define a range of widths of said tread.
3 more elements
A stairway comprising:
- at least a first stringer and a second stringer oriented in generally parallel spaced relation relative to one another, said stringers defining a length of said stairway;
- and
- a series of treads spaced along said length, each tread of said series having an adjustable width and extending at least between said first and second stringers, each said tread further having:
- a first member extending along at least a portion of said width, said first member having a first cross-sectional shape;
- and
- a second member extending along a portion greater than a remaining portion of said width, said second member having a second cross-sectional shape substantially identical to said first cross-sectional shape, said first cross-sectional shape and said second cross-sectional shape being adapted to couple in interlocking engagement of said first member with said second member whereby said first and second members are coupled in sliding engagement in a width-wise direction;
- each of said first member and said second member including:
- a web with two opposing edges;
- a first appendage extending along one of said two opposing edges, said first appendage defining an exterior surface;
- and
- a second appendage extending along the other of said two opposing edges, said second appendage defining an interior surface corresponding to said exterior surface whereby said first appendage of said first member couples in sliding engagement with said second appendage of said second member and said second appendage of said first member couples in sliding engagement with said first appendage of said second member.
8 more elements
A width-adjustable stairway step tread comprising:
- a first member extending along at least a portion of a width of said step tread, said first member having a first cross-sectional shape;
- and
- a second member extending along a portion greater than a remaining portion of the width of said step tread, said second member having a second cross-sectional shape, said second cross-sectional shape being identical to said first cross-sectional shape, but rotated edge-to-edge in inverted orientation relative to said first cross-sectional shape, each of said first cross-sectional shape and said second cross-sectional shape being adapted to couple in interlocking engagement of said first member with said second member whereby said first and second members couple to define a range of widths of said tread.
A width-adjustable stairway step tread comprising:
- a first member extending along at least a portion of a width of said step tread, said first member having a first cross-sectional shape;
- and
- a second member extending along a portion greater than a remaining portion of the width of said step tread, said second member having a second cross-sectional shape substantially identical to said first cross-sectional shape, each of said first cross-sectional shape and said second cross-sectional shape being adapted to couple in interlocking engagement of said first member with said second member whereby said first and second members couple in sliding engagement in a width-wise direction;
- each of said first member and said second member including:
- a web with two opposing edges;
- a first appendage extending along one of said two opposing edges, said first appendage defining an exterior surface;
- and
- a second appendage extending along the other of said two opposing edges, said second appendage defining an interior surface corresponding to said exterior surface whereby said first appendage of said first member couples in sliding engagement with said second appendage of said second member and said second appendage of said first member couples in sliding engagement with said first appendage of said second member.
5 more elements
Dependencies are inferred from the claim text.