Rotational dobby
US4730641A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1985 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Dec 12, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D11/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A driving coupling includes two pawls which are supported pivotally on an eccentric ring and which in a patternlike manner engage a longitudinal groove in the drive shaft. Each of two plates of a toggle-lever joint engages an arm extension of a respective pawl, the swivel axle of the toggle-lever joint being guided in a control groove of a swinging switching arm. When the pawls are engaged with a drive shaft groove, the toggle-lever joint is in an extended position which locks the pawls in position. For unlocking the pawls, the switching arm moves the toggle-lever joint into a catch opening between two guide rails. The pawls swing out and the drive shaft rotates without carrying along the pawls and the eccentric ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.