Portable vibratory screed with bubble vial inclination indication system
US7686538B2 · kind B2 · utility
9Cited by
19References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2007 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Jun 14, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C19/402
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A portable vibratory screed includes a blade that is connected to a handle constructed to be manipulated by an operator. Nodes of minimum vibrational amplitude are formed at specific locations along the length of the blade when the exciter is driven at a rated operating speed. A site level and/or the handle is attached to the blade at or in the vicinity of one or more of these nodes, therefore, is relatively isolated from induced vibrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.