Ring-center pivot loose-leaf binder page lifter
US6908248B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 14, 2003 |
| Grant date | Jun 21, 2005 |
| Priority date | — |
| Expiry date | Aug 14, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42F13/408
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A page lifting device for use with loose-leaf binders containing binding rings. The leaves of the page lifter are formed from one or more stiff sheets of material or loops of stiff wire, rotatably affixed at their inner edges to an attaching member that is fixedly attached to the binding ring-base. The pivot axis between the leaves and attachment member is located close to the center of the substantially circular binder rings which, when the binder is closed, causes the page lifter leaves to envelope and lift the loose-leaf pages away from the binder spine. The page lifter leaves can contain slots or holes therein, which allow them to fit over the binder rings on closing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.