Static structures (e.g. – buildings) – Stepped; e.g. – stair – Interconnected relatively movable components
Patent
1993-03-03
1994-09-27
Friedman, Carl D.
Static structures (e.g., buildings)
Stepped; e.g., stair
Interconnected relatively movable components
52188, E04F 1100
Patent
active
053497953
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.
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French Terry L.
Johnson Steven C.
Canfield Robert J.
Friedman Carl D.
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