Stepping drive
US4875382A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Feb 4, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18528
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An intermittent or stepping drive has a first rotatable member (20), which is driven by a driving shaft (12), in engaging relationship with a second rotatable member (30) from which a driven shaft (22) is driven whereby a continuous rotation of the first rotatable member (20) is converted into an intermittent rotation of the second rotatable member (30). One of the two rotatable members (20,30) is connected to the associated shaft (12,22) by a clutch (40) which is associated with a retaining member (50) that exerts thereon a retaining force (E) acting in an engagement sense. One of the shafts (12,22) is associated with a control device (60) which controls the retaining force (E) depending upon the angular position of rotation of the shaft. The control is suitable for the actual applications of the stepping drive of the type in which the clutch in each drive phase transmits a moment that is just as large as the sum of the acceleration moment, the useful moment and the friction moment, which occur in the respective driving phases when the drive is not disturbed. If this sum should be exceeded by a disturbing moment, the clutch permits a relative rotation of the rotatable member in qu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.