Crimping tool, crimped pipe with flattened end, and scaffold ladder frame
AssigneeGrady F. Smith & Co., Inc.
InventorGrady F Smith
Life of this patent
Estimating the term…
Abstract
A scaffold includes first and second ladder frames. Each ladder frame includes first and second vertical supports, and first and second horizontal supports mounted to the vertical supports. The first horizontal support is formed of tubular material, and has a base or central section and an asymmetric flattened end section. The end section is mounted to the first vertical support. The central section has a top centerline and a bottom centerline. The end section has a vertically elongated cross section compared to the central section. A top of the end section aligns with the top centerline of the central section; and a bottom of the end section is disposed below the bottom centerline of the central section. Related methods and tools are also disclosed.
Claims20
A scaffold ladder frame, comprising:
- at least one vertical support;
- a horizontal support formed of tubular material;
- the horizontal support having a central section and an asymmetric flattened end section, with the end section mounted to the vertical support;
- the central section having a top centerline and a bottom centerline;
- the end section having a vertically elongated cross-section compared to the central section;
- wherein a top of the end section aligns with the top centerline of the central section;
- and
- wherein a bottom of the end section is disposed below the bottom centerline of the central section.
A scaffold, comprising:
- first and second ladder frames, each comprising:
- first and second vertical supports;
- first and second horizontal supports mounted to the vertical supports;
- a plurality of cross braces, each configured to be releasably connected to both the first and second ladder frames to form a self-supporting scaffold;
- wherein the first horizontal support is formed of tubular material;
- the first horizontal support having a central section and an asymmetric flattened end section;
- the end section mounted to the first vertical support;
- the central section having a top centerline and a bottom centerline;
- the end section having a vertically elongated cross-section compared to the central section;
- wherein a top of the end section aligns with the top centerline of the central section;
- and
- wherein a bottom of the end section is disposed below the bottom centerline of the central section.
Dependencies are inferred from the claim text.