Pressing machine, particularly household refuse compactor and control circuit therefor
US4096421A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1975 |
| Grant date | Jun 20, 1978 |
| Priority date | — |
| Expiry date | Jun 18, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB30B9/3007
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The pressing machine includes a pressing ram, a drive arrangement for moving the ram from a starting position to an end-of-stroke position and back to the starting position and includes an electric drive motor. A control arrangement establishes the end-of-stroke position for the ram. The control arrangement includes a direction-reversing circuit connected to the drive arrangement for reversing the direction in which the drive arrangement moves the ram and includes a direction-reversing relay arrangement having a current path for activating current. A controllable electronic switch is connected to the activating current path for controlling the activation of the direction-reversing relay arrangement. A control-signal-generating circuit controls the conductivity of the electronic switch by generating and applying to the control input of the electronic switch a control signal dependent at least upon the loading of the drive motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.