Electronic casting brake
US4940194A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1988 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | Dec 8, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K89/01555
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A casting reel (10) has a reel housing (22). A reel spool shaft (14) is rotatably mounted in the reel housing. A magnetic disc (12) is connected to rotate with the shaft (14). An electrical coil (20) produces an output signal in response to movement of the disk (12). A control circuit (28) is connected to receive the output signal from the electrical coil (20). The control circuit (28) has a thyristor (52) which produces a drag signal that varies based on the output signal from the electrical coil. The electrical coil and magnetic disk provide a variable drag on the reel spool shaft (14). The variable drag changes based on the drag signal from the thyristor (52).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.