Method and apparatus for quickly testing the sealing effectiveness of a radial-lip shaft seal
US3987663A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1974 |
| Grant date | Oct 26, 1976 |
| Priority date | — |
| Expiry date | Oct 29, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/2869
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and device for quickly testing the sealing effectiveness of a shaft seal of the type having a radial shaft-engaging lip. A rotatable test shaft has an outer periphery preferably slightly smaller than the shaft for which the seal lip is designed, and the lip of the seal to be tested engages that periphery. The shaft centerline has a predetermined degree of offset from its own axis of rotation, so that the seal lip is subjected to a predetermined shaft runout when the test shaft is rotated at a desired speed. A stationary means supports the seal in a normally leak-tight manner and cooperates with the test shaft and seal to provide a chamber. Air is sent under a desired pressure to the chamber, and it is determined whether there is leakage of air from said chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.