Variable pitch stair railing assembly

Details Variable pitch stair railing assembly Variable pitch stair railing assembly

1982-02-16

1985-08-06

Kundrat, Andrew V.

Fences

Rail

Connection

256 59, E04H 1714

Patent

active

045331219

ABSTRACT:
A wooden stair rail assembly having a wooden handrail, a wooden shoe rail, and wooden balusters, is provided with a limited range of movement from about 29 degrees to 43 degrees, to accommodate the normal range of variations in the inclination or pitch of stairways. The ends of the balusters are provided with axially extending pins which engage the handrail and the shoe rail. The handrail and the shoe rail are provided with recesses into which the ends of the balusters extend, and clearance between the balusters and the rails is provided to permit the pins to flex so that the balusters may remain vertical despite the change in inclination of the handrail and the shoe rail. The pins are of high strength material having a low elastic limit and the quality of remaining deformed after having been bent, so that the assembly will retain its "racked" configuration once it has been shifted to the desired angle of inclination. Polyvinyl chloride plastic provides suitable mechanical properties for the dowels or pins. A thermo-setting glue, and additional wood fillets which may be positioned in longitudinally extending recesses, particularly in the shoe rail, complete the mechanical assembly, apart from the newel posts at the ends of the stair rail.

REFERENCES:
patent: 1772159 (1930-08-01), Roth
patent: 2654579 (1953-10-01), Cremens
patent: 2855227 (1958-10-01), Bottom
patent: 3306586 (1967-02-01), Green
patent: 4272061 (1981-06-01), Suckno
patent: 4352485 (1982-10-01), Basey

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