Molecular drag pump
US5895202A · kind A · utility
7Cited by
1References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 14, 1996 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | Jun 14, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/45
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A molecular drag pump including a stator and a rotor supported in the stator using two ball bearings at least one of which presses against at least one bearing surface of the stator serving as an axial abutment for the rotor, wherein the contact between the ball bearing and the bearing surface operates in bending and not in shear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.