Low tension winding apparatus
US4500043A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1983 |
| Grant date | Feb 19, 1985 |
| Priority date | — |
| Expiry date | Aug 1, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/32
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A plurality of photo sensitive devices arranged in vertical orientation monitors the sag of a loop of optical fiber extending between a feed capstan and a take-up spool. Each detector is connected to a respective switching circuit which, when activated by the presence of the fiber adjacent to its associated detector, generates a unique voltage. The switching circuits are connected to a motor control circuit by a sample and hold circuit which supplies to the motor control circuit a voltage proportional to the voltage generated by the most recently activated switching circuit. The speed of the motor driving the take-up spool is thus adjusted to cause the fiber catenary to return to a predetermined position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.