Spinning frame
US5304900A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1992 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Jul 22, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H1/34
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A flyer frame has a first AC motor for obtaining a general rotational movement of various parts of the frame and a second AC motor for obtaining only a variable component of the rotational movement of the bobbin. An inverter is provided for operating the first and second AC motor. A controller is divided into a general section for operating the frame powered by AC power source, and a winding section for obtaining a winding control of the frame. The winding control section is operated by a DC current, which is usually supplied by an outside AC source. A DC output of the inverter is connected to the winding section via a diode or relay, which usually disconnects the DC line to the winding section and which is closed upon the occurrence of the power failure, for supplying a regenerating current from the inverter to the winding section. A desired winding control is thus maintained upon the occurrence of the power failure, until the stoppage of the frame, to prevent rovings at respective spinning positions from being broken.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.