Dust trap valve with removeable double-life door and valve seat member
US4304254A · kind A · utility
2Cited by
8References
10Claims
0Family size
Inventors
Key dates
| Filing date | Oct 18, 1978 |
| Grant date | Dec 8, 1981 |
| Priority date | — |
| Expiry date | Oct 18, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6969
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A dust valve for the discharge line of a dust collection system includes a removable closet with two wear surfaces and a coacting removable valve door with two wear surfaces mounted within the valve body. Once the coacting wear surfaces on the closet and the door are sufficiently worn that they need replacement, each element can be disconnected from its supporting structure, inverted, and then reconnected to the valve body so as to expose a new wear surface. The useful lives of these elements is thus doubled over conventional single wear surface closets and doors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.