Frost free valve assembly
US6880573B2 · kind B2 · utility
24Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2003 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Aug 3, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/88054
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A frost free faucet having a spigot assembly including a drain conduit, a sleeve assembly including an elongated pipe, and a valve assembly. The valve assembly including a ¼ turn valve and a check valve. The ¼ turn valve includes a rotatable disc with an inlet and a stationary disc with a through hole. Each disc is formed of a ceramic material, wherein upon turning the rotatable disc 90 degrees in a first direction the inlet and the through-hole align to an open position and upon turning the rotatable disc 90 degrees in a second direction, the inlet and the through-hole misalign to a closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.