Dishwasher float switch control assembly
US4180095A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1978 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | Oct 6, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7423
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A float support includes a guide sleeve extending upwardly from a dishwasher chamber sump for slidable reception of a float stem. The support includes a hollow standpipe having an upper portion, partially defined by an external wall of the guide sleeve along part of its axial height, and a lower portion extending down through the sump in an offset manner. The inverted cuplike float includes a plurality of cavities at least one of which is adapted to entrap air to provide buoyance to the float. A remaining one of the cavities defines a combined float damping and overflow cavity which conceals the upper portion of the hollow standpipe such that the standpipe establishes an air break path between the overflow cavity and atmosphere thereby damping the vertical travel of the float.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.