Knife with exchangeable blades
US4180909A · kind A · utility
Inventor
Key dates
| Filing date | Mar 14, 1978 |
| Grant date | Jan 1, 1980 |
| Priority date | — |
| Expiry date | Mar 14, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B5/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A knife comprises a tension rod insertable into an opening extending through a handle, and a bolt at one end of the handle and in threaded engagement with the tension rod for retaining a replaceable blade at the other end of the handle. The tension rod comprises two elongate parallel rod portions of rigid material, one of which is provided with pins engageable with holes in the blade for retaining the blade between adjacent ends of the rod portions. These ends of the rod portions are formed with at least one wedge surface for co-operation with a corresponding wedge surface on the handle. This knife construction facilitates cleaning, requires few parts and enables the blade and the tension rod to be readily withdrawn from the handle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.