Hinged case providing sectional cover with anti-pinch interleaving through
US4913463A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1988 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Oct 27, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B7/367
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Interleaving troughs (28-30) are securely fixed to a front cover (12) and a back cover (14) of a hinged apparatus (10). The first and second troughs (28-30) are generally semicircular in shape and are dimensioned to slidably cooperate with each other. A gap (34) is formed between the second trough (30) and the back cover (14) to receive the first trough (28) when the apparatus (10) is in a fully opened position. When the apparatus (10) is closed, first and second troughs (28-30) form a generally cylindrical container (36) for holding a wire spiral (26) of a book (20). When the apparatus (10) is closed, a void (38) of less than 3/16 inch is formed between the first and second troughs (28-30). The void (38) meets the ASTM standards for toy safety with regard to a pinching hazard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.