Self-locking blade holder
US5443276A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1994 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Jul 22, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/17769
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The reciprocating plunger of a power tool has a planar surface for substantial co-extensive engagement with one side of the mounting portion of plural ones of blades of varying thicknesses. A housing mounted to the plunger includes a cavity and rotatably supports a cam block in the cavity. The cam block has an arcuate cam face establishing respective plural axial lines of contact with the other side of the mounting portion of ones of the blades of varying thicknesses. Each of the lines of contact occupies an over-center relationship with respect to a plane perpendicular to the blade and containing the axis of rotation of the cam block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.