Dual retractable seam ripper
US10219567B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2016 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Nov 29, 2036 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B89/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dual blade retractable seam ripper is provided. The seam ripper has a generally cylindrical tube and a unitary injection molded slide block structure. The tube has a control slot and two capped ends with blade extension openings, one major and one minor. The unitary structure has a major seam ripping blade and a minor seam ripping blade, each carried by a support. Each blade projects through the corresponding cap opening. One support is attached to a leaf spring cantilevered at the other end. The spring carries a control button which projects through and moves within the slot and a locking pin which extends beyond the spring. Depressions in the tube engage and dis-engage with the locking pin as the button moves and is pressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.