Protective envelope for optical data card
US4711347A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1986 |
| Grant date | Dec 8, 1987 |
| Priority date | — |
| Expiry date | Feb 14, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45C11/182
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A protective envelope having an adhesive flap which lifts open to expose a data storage area of a data card, allowing data to be read while the card remains protected in the envelope. The flap may be then closed over and readhered to the card. The envelope comprises a base and a cover panel bonded at three edges to form a pocket for card storage. The cover panel is made up of a pair of fixed edge stripes bonded to respective opposed side edges of the base and a liftable flap bonded to a back edge of the base. Envelope materials are preferably a transparent, flexible plastic, but only the flap need be flexible. The flap may extend beyond and fold over a front edge of the base and adhere to an underside of the base. An alternative embodiment of the envelope provides two flaps, bonded to respective front and back edges of a base, which open from the center.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.