Countersink assembly
US8052359B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2009 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Nov 25, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/9065
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A countersink assembly including a countersink sleeve body with a distal cutting edge, a longitudinal bore to receive and secured to a drill bit, and a flute extending from the distal cutting edge. A depth stop collar having a longitudinal bore is disposed on and secured to the countersink sleeve body. In an example embodiment, the longitudinal bore of the depth stop collar includes at least one passage for chip egress. In addition or in the alternative, the flute includes a flat surface and a part cylindrical surface extending from the distal cutting edge along the length of the flute at an angle to the longitudinal bore of the countersink sleeve body so as to present a slight down-cut spiral.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.