Undirectional ratchet utilizing an articulated pawl
US5320298A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1992 |
| Grant date | Jun 14, 1994 |
| Priority date | — |
| Expiry date | Jan 10, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D41/12
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention is embodied in an articulated pawl. This pawl is designed to reliably drive a take-up reel on a tape and reel component feeder. By always engaging teeth on the reel, the pawl is prevented from skipping teeth during the return phase of the reel drive cycle. The addition of an articulated arm on the pawl prevents the pawl from skipping teeth on the reel during the drive phase of the reel drive cycle. The articulated arm ensures that either the tooth on the base of the pawl or the tooth on the articulated arm engages a tooth, or both engage teeth, on the reel during the drive phase. This invention ensures the positive and repeatable rotation of the take-up reel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.