Movable pressure spring band to avoid excessive wear from card feeding apparatus
US5090032A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Jun 14, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/015
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A pressure spring for urging a document (10) against a reading head (22) in a document processing machine, comprises a resilient band (46) on band support arms (50) with different portions of the discontinuous resilient band (46) being selected to lie between the support arms (50). Manually operable means (80), (70) can be provided. In one embodiment, a motor (84) under the action of a controller (106), automatically advances the discontinuous band (46) whenever a service date or a pre-determined document count has been exceeded. Should the discontinuous resilient band (46) reach an extremity of travel, the controller (106) provides that the motor (84) returns the discontinuous resilient band (46) back to its start position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.