Combustion powered tool with improved combustion chamber fan motor suspension
US6520397B1 · kind B1 · utility
32Cited by
12References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1997 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Dec 22, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A suspension mechanism for mounting a combustion chamber fan motor in a combustion powered hand tool including a flexible rubber web secured between a motor retaining ring and a cylinder head mounting bracket. The suspension mechanism is tuned for at least one of reducing the axial acceleration of the motor and dampening the oscillation of the motor relative to the tool. The web includes concentric grooves on its upper and lower surface and a number of bores on the upper surface to provide the requisite flexibility depending on the characteristics of the tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.