Sleeve for a medical instrument, particularly a dental handpiece, and the method of manufacture
US5139422A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1988 |
| Grant date | Aug 18, 1992 |
| Priority date | — |
| Expiry date | Feb 24, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C1/16
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A sleeve that has the shape seen in the longitudinal direction that deviates in cross section and/or has an outside diameter that changes from a shape with a rotational symmetry to a shape with a non-rotational symmetry and has a ridge extending at least a portion of the length of the sleeve to form ledges between the ridge and adjacent curved surfaces. A method for manufacturing the sleeve includes inserting a workpiece in a die having the desired contour for the outer surface of the sleeve, heating the material and subjecting the material to internal pressure to deform the workpiece into the contour of the die to form the sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.