Sewing machine
US8176860B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2009 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Sep 14, 2030 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B55/14
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A sewing machine including a needle bar; a sewing needle attached to the lower end of the needle bar; a needle bar drive mechanism vertically driving the needle bar; a presser foot capable of applying releasable pressure on a workpiece cloth and that releases the pressure to allow manual movement and sewing of the workpiece cloth; a regulatory needle including a tip and being capable of assuming a pierced state where the tip is pierced through the workpiece cloth and a non-pierced state, wherein the regulatory needle is moved along with the workpiece cloth while retaining the pierced state of the tip; a regulatory needle drive unit vertically driving the regulatory needle between the pierced state and the non-pierced state in coordination with vertical movement of the sewing needle; and a regulatory needle regulator limiting horizontal movement of the regulatory needle so as not to exceed a predetermined stitch pitch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.