Tank trailer having an air actuated handrail assembly
US8632099B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2011 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Feb 28, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R3/005
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A handrail assembly for a tank trailer and a yoke assembly for the same. Handrail assembly provides a safety device for an operator walking along a top wall of the tank trailer. The handrail assembly includes a top rail, a plurality of vertical members, a safety wire and, sometimes, a bottom rail. Each yoke assembly secures one of the top and bottom ends of the vertical members to either of the top and bottom rails or to a mounting bracket on the tank. Each yoke assembly includes a base member engaged partially in a bore of the vertical member, and a cradle member engaged with an exterior wall of the top or bottom rails or mounting bracket. Base and cradle members are secured together by a pivot pin. Fluid-actuated cylinders extending between the vertical members and the tank move the handrail assembly between collapsed and expanded positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.