Boom arm and concrete-distributing boom
US9874033B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 2017 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Apr 12, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/38
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An inventive boom arm for a concrete-distributing boom. The boom arm has an elongate box-profile support formed from two flanges and two webs connecting the flanges laterally. The boom arm has first and second articulation points spaced apart in the longitudinal direction of the boom arm. A first flange opening is disposed at the first articulation point and a second flange opening is disposed at the second articulation point. A sealing-partition seals a cavity region of the box-profile support at least in a region of the first and second flange openings. The sealing partition can be provided in the form of a plate that continuously spans the cavity region between the first and second articulation points and is connected laterally to the webs. The first articulation point is located at the end of the boom arm and is arranged within the cavity region and is covered by the partition plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.