Apparatus for confirming and reporting the operating conditions of a chain saw or the like
US4829579A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1986 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Oct 7, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16N2230/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Confirmation of the existance of the proper operating conditions of a power tool is obtained by providing confirmation sensing means for sensing and confirming inspection and verification of the appropriate condition of each one of a plurality of preset operating conditions by the user, a confirmed state judging means for receiving the output of the completed confirmation sensing means and judging what operating conditions have been completely inspected and verified; a confirmation instructing means for informing the user of those operating conditions yet to be inspected and verified in response to the output of the confirmed state judging means; and, switching means for receiving the output of the confirmed state judging means and thereby allowing energization of the igniting circuit of the engine only after confirmation of all the preset operating conditions are completed and met.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.