Construction unit suitable for making stair stringers

Details Construction unit suitable for making stair stringers Construction unit suitable for making stair stringers

1992-07-13

1994-03-15

Friedman, Carl D.

Static structures (e.g., buildings)

Stepped; e.g., stair

52188, 52190, 52191, 52715, E04F 1100

Patent

active

052937224

ABSTRACT:
A construction unit (10) which is suitable for use in the fabrication of a stair stringer is provided. In one embodiment, the unit has three side members (12, 14, 16) which form a right triangle. The side member (16) forming the hypotenuse of the right triangle has a flat surface for locating the unit (10) against a flat support surface. The side members (12, 14) forming the other two sides of the right triangle are provided with channels (22) extending along their lengths, each for receiving the edge of a stair tread (28) or stair riser (30) forming sheet therein.

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patent: 4841690 (1989-06-01), Commins
patent: 4951434 (1990-08-01), Schmidt

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