Pump chambers minimizing formation of deposits
US4300870A · kind A · utility
5Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1979 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Apr 12, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J31/542
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Pump chambers usable in beverage makers, for example, have a liquid-contacting heated surface provided with abrupt discontinuities--e.g. sharp edges or corners--to promote flaking-off of mineral deposits. These edges may be fins of rectangular or triangular cross-section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.