Step for temporary installation
Patent Information
- Authority / Receiving Office
- US · United States
- Current Assignee / Owner
- WORLD WAY SAFETY S R O
- Publication Date
- 2008-06-19
- Estimated Expiration
- Not applicable · inactive patent
Smart Images
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Abstract
Description
TECHNICAL FIELD
[0001] The invention relates to a step for temporary installation upon a slope, consisting of a step board pivoting around its horizontal axis and provided with tilting struts for adjusting the angle between the plane of the board and the plane of the slope.PRIOR ART
[0002] When working on steep slopes, such as during rescue work in water channels, during construction and maintenance work on roofs etc., various devices are used for ensuring relatively comfortable and safe temporary stairs. The specification CH 636166 discloses a ladder intended for working upon slopes and provided with stair steps pivoting in lengthwise profiles. Each board accommodates a toothed wheel inside the profile, all wheels being interlinked by way of a rack bar serving to adjust the same position, i.e. horizontal position of all steps on any slope, by moving the rack bar. The abstract JP 9268868 describes a temporary step consisting of a H-shaped frame made of tubes supporting the pivoting step...