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US 5,931,257 AGranted
Scaffold step
OwnerDanny Hardeninventor
Life of this patent
Estimating the term…
Abstract
A scaffold step including an elongated platform and a number of clamps disposed at spaced-apart positions along the length of the elongated platform. The elongated platform has an openwork construction which sheds dirt and moisture and provides a non-slip surface for standing. Each of said clamps, however, includes hinged, upper and lower members which may be clamped around a tubular scaffold member by means of a simple, nut and bolt arrangement.
Claims3
A scaffold step for mounting on a tubular scaffold member, said scaffold step comprising:
- an elongated platform having a longitudinal axis and including:
- a plurality of support plates positioned in a side-by-side relationship, each of said support plates having an upper end and a lower end and a plurality of teeth in said upper end for gripping the footwear of a user treading thereon;
- a plurality of connecting rods piercing said teeth and being fixedly secured across the upper ends of said support plates;
- and,
- a plurality of connecting arms fixedly secured across the lower ends of said support plates;
- a plurality of clamps disposed at spaced-apart positions along said elongated platform, each of said clamps having a central axis oriented parallel to said longitudinal axis of said elongated platform, each of said clamps including:
- an upper member fixedly secured to the bottom of said elongated platform, said upper member having a first flange, a second flange, and a first concave portion between said first flange and said second flange for engagement with the top of a tubular scaffold member;
- a lower member having a third flange, a fourth flange, and a second concave portion between said third flange and said fourth flange for engagement with the bottom of a tubular scaffold member, said third flange having a vertical slot and said fourth flange being hingedly secured to said second flange of said upper member;
- an eye bolt hingedly secured to said first flange of said upper member and adapted for positioning within said slot in said third flange of said lower member;
- and,
- a nut threaded onto said eye bolt for engaging said third flange of said lower member and for providing a clamping effect on a tubular scaffold member positioned between said first concave portion and said second concave portion.
8 more elements
A scaffold step for mounting on a tubular scaffold member, said scaffold step comprising:
- an elongated platform having a longitudinal axis and including:
- a plurality of support plates positioned in a side-by-side relationship, each of said support plates having an upper end and a lower end and a plurality of teeth in said upper end for gripping the footwear of a user treading thereon;
- a plurality of connecting rods piercing said teeth and being fixedly secured across the upper ends of said support plates;
- and,
- a plurality of connecting arms fixedly secured across the lower ends of said support plates;
- a plurality of clamps disposed at spaced-apart positions along said elongated platform, each of said clamps having a central axis oriented parallel to said longitudinal axis of said elongated platform, each of said clamps including:
- an upper member fixedly secured to the bottom of the lower ends of at least two support plates, said upper member having a first flange, a second flange, and a first concave portion between said first flange and said second flange for engagement with the top of a tubular scaffold member;
- a lower member having a third flange, a fourth flange, and a second concave portion between said third flange and said fourth flange for engagement with the bottom of a tubular scaffold member, said third flange having a vertical slot and said fourth flange being hingedly secured to said second flange of said upper member;
- an eye bolt hingedly secured to said first flange of said upper member and adapted for positioning within said slot in said third flange of said lower member;
- and,
- a nut threaded onto said eye bolt for engaging said third flange of said lower member and for providing a clamping effect on a tubular scaffold member positioned between said first concave portion and said second concave portion.
8 more elements
Dependencies are inferred from the claim text.