Method of creating a watertight basement stairway...

Details Method of creating a watertight basement stairway... Method of creating a watertight basement stairway...

2005-11-01

2005-11-01

Olszewski, Robert P. (Department: 3632)

Static structures (e.g., buildings)

Processes

Barrier construction

C249S014000

Reexamination Certificate

active

06959521

ABSTRACT:
A concrete basement stairway is created, by positioning a stairway form1between a first pair of concrete receiving foundation channels9and a second pair of concrete receiving foundation channels9aof any size foundation, the stairway form including a single piece stairstep panel2, coupled by pivotable latching members, between a pair of parallel inner stairway side panels6and6a, the inner stairway side panels configured to permit concrete to flow between the two pairs of concrete receiving foundation channels and spaces beneath the stairstep panel, in a manner forming a series of solidified concrete steps unified, and thus leak proof, with concrete solidified within the concrete receiving foundation channels. The stairway is formed simultaneously with the foundation so that a builder can complete the job without awaiting shipment of a pre-cast stairway requiring returning to the site. Reusable lightweight aluminum forms are employed for easy handling.

REFERENCES:
patent: 2652614 (1953-09-01), Como
patent: 2705825 (1955-04-01), Dartez et al.
patent: 2880491 (1959-04-01), Varnado, Sr.
patent: 3126605 (1964-03-01), Davis
patent: 3147531 (1964-09-01), Lyons
patent: 3269688 (1966-08-01), Hulicki
patent: 5402610 (1995-04-01), Salva′ et al.
patent: 5511347 (1996-04-01), Schwarz

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