Document weighing apparatus
US4185709A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1978 |
| Grant date | Jan 29, 1980 |
| Priority date | — |
| Expiry date | Nov 30, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S209/90
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Document weighing apparatus is provided which includes a scale having a channel-shaped document weighing platform. The platform defines a passageway for receiving vertically oriented documents serially fed to the platform. In addition, the apparatus includes document decelerating instrumentalities comprising a pair of flexure springs mounted for movement between a passageway restricting position and a non-passageway restricting position. The flexure springs are oriented with respect to each other, when disposed in the passageway restricting position, for cooperatively progressively restricting the passageway in the direction of downstream movement of documents; thereby to exert decelerating forces on the opposed major surfaces of documents in the passageway. In addition, the apparatus includes instrumentalities for moving the flexure springs. Further, each of the free ends of the flexure springs is oriented to resist upstream movement of documents in the passageway when the springs are disposed in the passageway restricting position; thereby to halt upstream movement of documents which bounce off the document decelerating instrumentalities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.