Power trowel gearbox
US6592290B2 · kind B2 · utility
9Cited by
11References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 24, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Sep 24, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F21/247
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A gearbox for a self-propelled power trowel for finishing a concrete surface having a rigid frame adapted to be disposed over a concrete surface, an engine assembly, at least one rotor assembly. The gearbox uses an input shaft having a first bevel gear, an intermediate shaft having a second bevel gear and a first helical gear, and an output shaft having a second helical gear to connect the engine assembly to the rotor assembly to accomplish a double reduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.