Presser-foot apparatus
US4292907A · kind A · utility
13Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Jun 28, 1999 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B29/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Presser-foot apparatus is disclosed which is capable of automatically adjusting to various levels of sewing. The presser-foot is slidably held within a housing affixed to a needle bar. The presser-foot is biased against the housing so as to move in conjunction therewith until contact is made with the workpiece. The presser-foot exerts a steady, unvarying pressure on the workpiece while the needle associated therewith continues downwardly. The presser-foot is ultimately lifted from the workpiece during the upward retraction of the needle from the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.