Frame for supporting stairs or the like

Details Frame for supporting stairs or the like Frame for supporting stairs or the like

1988-06-13

1989-10-24

Murtagh, John E.

Static structures (e.g., buildings)

Stepped; e.g., stair

Precast stonelike component

52191, E04F 1110, E04F 1112, E04F 1114

Patent

active

048753157

ABSTRACT:
A stair supporting frame made of a pair of stringers and a set of triangular blocks slidingly fitted in a groove provided in upper surface of the stringer. The groove has a uniform width defined by parallel sidewalls and the width of the blocks corresponds to the width of the groove. The blocks can slide into and along the groove. The degree of penetration of the blocks in the groove does not affect the outer appearance of the blocks relative to the stringer.

REFERENCES:
patent: 960207 (1910-05-01), Slater
patent: 1075156 (1913-10-01), Nesdall
patent: 1925642 (1933-09-01), Meredith
patent: 2021457 (1935-11-01), MacKenzie
patent: 4015687 (1977-04-01), Dean
patent: 4583335 (1986-04-01), Morellini

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