Three-step foldable ladder i.e. rolling ladder, for use as e.g. climbing assistance for shopping cart in staircase of supermarket, has main frame including two steering bars connected by transverse bar

摘要

The ladder (1) has two forelegs (5) including two guidable wheels (7), and two hind legs (5a) comprising two fixed wheels (7a). A main frame (4) includes two steering bars (9, 9a) connected by a transverse bar (8). Handles (11, 11a) and ascertainable brake levers (12, 12a) are arranged in ends of the steering bars. Brakes (14) are attached over the guidable wheels and the fixed wheels. Brake levers are operated over brake cables (13, 13a). A walking frame includes a rotary stand that is firmly connected with an axle.