Countersinking tool
US6901784B1 · kind B1 · utility
0Cited by
7References
1Claims
0Family size
Inventor
Key dates
| Filing date | Feb 2, 2004 |
| Grant date | Jun 7, 2005 |
| Priority date | — |
| Expiry date | Feb 2, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D19/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A countersinking tool for countersinking openings into a hollow metal door frame in order to insert wall anchors through the openings to lie flush with the door frame. The countersinking tool has two parts. The nut is a base with a threaded opening extending lengthwise through its center. The bolt has a hexagonal-sided top that tapers to a threaded screw insertable into the threaded opening of the nut.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.