Multiple section chute restrictor
US4919249A · kind A · utility
8Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1989 |
| Grant date | Apr 24, 1990 |
| Priority date | — |
| Expiry date | Apr 17, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28C5/4251
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
One of the hinges between sections of the distributing chute of a concrete mixer is provided with a stop which prevents abutment of chute section and the corresponding possibility of injury to hands of a workman engaged in unhinging the chute sections. One of the sections also has a cam which restores the abutment to a safety position when the sections are unhinged and folded back into transporting position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.