Demountable stairway unit
First Claim
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1. A STAIRWAY UNIT FOR DEMOUNTABLE INSTALLATION ON A DEMOUNTABLE SCAFFOLDING STRUCTURE OF THE TYPE BUILT UP OF VERTICALLY DISPOSED, TUBULAR MODULAR COMPONENTS AND HORIZONTAL CONNECTING COMPONENTS FOR ADJACENT ONES OF THE VERTICAL, TUBULAR, MODULAR COMPONENTS;
- SAID STAIRWAY UNIT COMPRISING A PAIR OF SPACED PARALLEL STRINGER ELEMENTS TO WHICH THE OPPOSITE ENDS OF A PLURALITY OF TREAD ELEMENTS ARE SECURED AND SAID STRINGER ELEMENTS ADDITIONALLY INCLUDING MEANS CAPABLE OF BEING INTERPOSED BETWEEN FOR DEMOUNTABLE ENGAGEMENT WITH SELECTED ADJACENT ONES OF THE VERTICAL, TUBULAR COMPONENTS OF THE SCAFFOLDING STRUCTURE IN SUCH RELATION THERETO THAT THE TOP SURFACES OF THE TREADS ARE DISPOSED IN SUBSTANTIALLY HORIZONTAL PLANES.
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1 Claim
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1. A STAIRWAY UNIT FOR DEMOUNTABLE INSTALLATION ON A DEMOUNTABLE SCAFFOLDING STRUCTURE OF THE TYPE BUILT UP OF VERTICALLY DISPOSED, TUBULAR MODULAR COMPONENTS AND HORIZONTAL CONNECTING COMPONENTS FOR ADJACENT ONES OF THE VERTICAL, TUBULAR, MODULAR COMPONENTS;
- SAID STAIRWAY UNIT COMPRISING A PAIR OF SPACED PARALLEL STRINGER ELEMENTS TO WHICH THE OPPOSITE ENDS OF A PLURALITY OF TREAD ELEMENTS ARE SECURED AND SAID STRINGER ELEMENTS ADDITIONALLY INCLUDING MEANS CAPABLE OF BEING INTERPOSED BETWEEN FOR DEMOUNTABLE ENGAGEMENT WITH SELECTED ADJACENT ONES OF THE VERTICAL, TUBULAR COMPONENTS OF THE SCAFFOLDING STRUCTURE IN SUCH RELATION THERETO THAT THE TOP SURFACES OF THE TREADS ARE DISPOSED IN SUBSTANTIALLY HORIZONTAL PLANES.
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Current AssigneeHerman O. Gnehm
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Original AssigneeHerman O. Gnehm
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InventorsGnehm, Herman O.
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Application NumberUS04/525,767Time in Patent Office393 DaysField of SearchUS Class Current182/106CPC Class CodesE04F 11/025 Stairways having stringers ...
