Retractable knife
US6219923A · kind A · utility
22Cited by
5References
16Claims
0Family size
Inventors
Key dates
| Filing date | Nov 4, 1998 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Nov 4, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B5/003
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A retractable utility knife having a housing, a coil spring disposed within the housing, a blade, and a manually operable push button extending through the housing and in contact with the blade for movement therewith. The blade is positioned for longitudinal movement within a longitudinal passage defined within the coil spring. The spring biases the blade to the retracted position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.