Ladder step stool with latch
US6390237B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Jan 14, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C1/387
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A step stool or ladder has a first frame member and a second frame member. The second frame member folds to a position within the confines of the first frame member to provide a thin, easily stored ladder for use within a household. The first frame member includes a safety hoop at which the user can easily grab while on the step or rung of the ladder or step stool. The frame also includes a cross member which spans a portion of one of the frame members. The ladder or step stool has one or more steps. At least one of the steps is supported primarily by the cross member in its unfolded position in which a user can ascend on the steps of the stool or ladder. One or more other steps may be attached to step which is primarily supported by the cross member. The step that is primarily supported by the cross member includes a latch that has a first curved end which engages the cross member to prevent the step primarily supported by the cross member from disengaging the cross member. The latch has a curved end which engages the cross member. The other end of the latch extends through an opening in the step so that the latch is accessible and visible to the user. The end passing through the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.