Sewing machine
US7908027B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2007 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Sep 22, 2029 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05D2205/32
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A sewing machine including a needle bar that has a sewing needle attached in a lower end thereof; a needle-bar vertical drive mechanism that vertically moves the needle bar by a sewing machine motor via a sewing machine motor main shaft; an imaging unit that captures image of at least the sewing needle and a moving object that is in close proximity of the sewing needle; a distance calculating portion that calculates a distance between the sewing needle and the moving object based on image data captured by the imaging unit; a judging portion that makes a judgment that the distance calculated by the distance calculating portion is equal to or less than a predetermined distance; and a control portion that controls execution of a predetermined safety operation based on a judgment result of the judging portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.