Patent · US Active

Step ladder

US10648234B2 · kind B2 · utility

21Cited by

27References

28Claims

0Family size

Assignee

Tricam Industries, LLC · US

Inventors

Jeff Skubic · Eden Prairie, US
Dennis D. Simpson · Spencer, US
Ben Williams · Chaska, US
Yongxue Lu · Shanghai, CN

Key dates

Filing date	Feb 9, 2015
Grant date	May 12, 2020
Priority date	—
Expiry date	Feb 9, 2035

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE06C7/14
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A ladder including a first frame, a second frame and a platform assembly. The first frame includes one or more fixed steps. The platform assembly includes a first platform pivotably coupled to the first frame, a second platform pivotably coupled to the first frame, a first linkage coupled between the second frame and one of the first platform and the second platform, and a second linkage coupled to the first platform and the second platform. The ladder is movable between a closed position and an open position.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.