Portable power working machine
US10495115B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2016 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Aug 18, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/4226
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention is directed to a portable power working machine in which a casing has a side surface in which a suction port is provided. A block prevention guard is attached to the side surface of the casing. The block prevention guard comprises a top surface opening formed in the block prevention guard to at least partially overlap the suction port. The block prevention guard further comprises a plurality of legs standing from the side surface of the casing to maintain the top surface opening at a distance from the side surface. In addition to the top surface surface, an air flow window is formed between two adjacent legs in the circumferential direction of the top surface opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.