Removable sealing plug for spaced apart wall structure
US4300774A · kind A · utility
15Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1980 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Apr 28, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7009
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A plug including an axial shaft, a mating end of which is spring coupled to a mating portion of a sealing plug. The other end of the shaft includes an externally threaded portion and a flanged portion. The sealing plug also includes an externally threaded portion and a flanged portion. The spring normally mates the shaft and sealing plug together so that the members are rotationally engaged. When the spring is suitably compressed, the mating relationship is removed so that the members are rotationally disengaged. The plug is particularly useful in conveniently sealing double wall combustors such as those in gas turbine engines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.