Spring energized desktop stapler
US6918525B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 2003 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | May 23, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C5/1696
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A desktop stapler uses a spring to store energy to install staples by impact blow. The force required to fasten papers together is reduced. A very compact mechanism is used, including a dual coil power spring with a nested lever. A multi function base provides a sloped front all the way to down to a desk top surface to guide paper sheets atop the base, easy access for lifting the stapler off a desk, horizontal or vertical resting positions, and integrated soft grip under-surface. The base surrounds the rear of the stapler body to provide a smooth exterior so that the device is natural to use both horizontally and vertically. A simple re-set spring provides a smooth re-set action as the handle is raised. A staple track includes enlargement features to fit a larger staple pusher spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.