Coil inserting apparatus
US4457067A · kind A · utility
0Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1982 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Apr 21, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53161
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus reduces the insertion-required force in a coil inserting apparatus. A coil and an insulating material piece are automatically inserted into the groove of a stator core by the operation of a coil pusher. A current flows from a piezo-electric element accommodated within the coil pusher, when insertion resistance applied upon the coil pusher has increased, through the relay solenoid valve to drive a hydraulic cylinder thereby raising the coil wrapping jig. When the insertion pressure has suddenly increased, the current stops to keep fundamentally the coil wrapping jig synchronous to the motion of the coil pusher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.