Non-contacting, gap-type seal having a ring with a patterned microdam seal face
US5090712A · kind A · utility
34Cited by
11References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1990 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Jul 17, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3412
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A seal face of a ring used in a non-contacting, gap-type seal having an annular groove area with microdams, each having a preferable width of about 0.025 inches, between a plurality of groove surface areas. The microdams provide a boundary to the groove surface areas whereby the recess of each groove surface area bounded by the microdams acts as a unitary pressure zone and the pressure in the separate zones decreases in a series of steps as measured from one circumference of the ring to the other circumference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.