Method of making thermoplastic valve rotors
US5246655A · kind A · utility
4Cited by
20References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1991 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Apr 30, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49996
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of making a rotor for a rotary valve including cutting a round slug of a plastic material to a desired length, turning the round slug on a lathe to provide a desired outside diameter, milling the slug on a vertical milling machine to form a plurality of circumferentially spaced pockets, each of the pockets having rounded wall junctures and corners on a vertical milling machine, and milling an axial hole in the slug for receiving an end portion of a drive shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.