Combination ladder and stair

Details Combination ladder and stair Combination ladder and stair

1993-09-07

1994-06-28

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Combined

182194, 482 35, 52182, A63B 900

Patent

active

053238745

ABSTRACT:
The invention disclosed comprises a combination ladder and stair for use by children which incorporates stair-like treads and risers with ladder-like rungs to achieve safe climbing activity. The combination ladder and stair is adapted to be used at a comparatively steep angle to the ground with the treads being maintained level. The rungs are placed adjacent to and level with each tread to afford additional security for the foot, and are spaced from the tread to allow the hand to grasp around the rung. In the preferred embodiment the ladder is incorporated into a split tube which serves as an entry to a children's play system.

REFERENCES:
patent: 2620185 (1952-12-01), Hardin
patent: 4447055 (1984-05-01), Ahrens
patent: 4932648 (1990-06-01), Ahrens

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