Internal abrading tool and method of making
US5321919A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1991 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Sep 3, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24D13/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A twisted stem internal abrading tool having molded axially curved swept back filaments is formed from a twisted stem internal finishing tool having strips of abrasive containing plastic arrayed in a radial pattern about a twisted tool stem. The filament end of the tool is inserted into an undersized mold cavity thereby forcing the filaments into an axially curved swept back configuration. With the filament end of the tool fully inserted into the mold, the mold is heated and quenched to permanently fix the filaments in an axially curved bent back configuration producing an abrading tool in which the lengths of the abrasive filaments are positioned for contact with internal surfaces, maximizing the amount of abrasive material put in contact with the work surfaces and increasing the abrading efficiency of the tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.