Folding ramp
US7526826B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 6, 2006 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Sep 6, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F2011/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A folding ramp (20) generally includes at least first and second ramp sections (24 and 26), and a first hinge assembly (22) coupling the first and second ramp sections. The first hinge assembly includes adjacent first and second collars (44A and 44B), wherein a first portion of a tongue and groove coupling device (60A) of the first collar is coupled to a second portion of the tongue and groove coupling device (62A) of the first ramp section and a first portion of a tongue and groove coupling device (60B) of the second collar is coupled to a second portion of a tongue and groove coupling device (62B) of the second ramp section. The first hinge assembly further includes a hinge pin (48), wherein the first and second collars are designed and configured to rotate in opposite directions around the hinge pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.