US3721783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overflow float arrangement for dishwasher
Assignee: Westinghouse Electric Corp
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Filing: 1971-07-27
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Granted: 1973-03-20
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Expires: 1991-07-27
Abstract
Abstract An overflow control float arrangement in which a structurally integral member secured to the bottom wall of the dishwasher tub includes a float guide portion projecting up into the tub and a switch mounting portion located below the tub wall so that as assembled the adjusted relation between the float and control switch is automatically obtained.
Inventors
- 👤 C Hancock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:16
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/18; A; A47; A47L; A47L15/00; A47L15/42; A47L15/4244
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
In a dishwasher: a tub including a bottom wall having an opening therein; a structurally integral molded one-piece member having a tUbular float guide portion open at both the top and bottom ends, and a switch mounting portion; a switch; means securing said structurally integral member to said bottom wall with said float guide portion projecting up into said tub through said opening to a height that said open upper end is above a typical overflow water level, and said switch mounting portion being located below said bottom wall; float means responsive to the water level in said tub and guided for vertical movement by said guide portion and including a depending rod extending freely and in unconnected relation down through said guide portion to control said switch; and said switch is carried by said switch mounting portion in a position to be operated to alternate positions in accordance with vertical movement of said rod.
Claim 2
Dependent Claim
155 words
In a dishwasher: a tub including a bottom wall having an opening therein; a structurally integral molded one-piece member having a tUbular float guide portion open at both the top and bottom ends, and a switch mounting portion; a switch; means securing said structurally integral member to said bottom wall with said float guide portion projecting up into said tub through said opening to a height that said open upper end is above a typical overflow water level, and said switch mounting portion being located below said bottom wall; float means responsive to the water level in said tub and guided for vertical movement by said guide portion and including a depending rod extending freely and in unconnected relation down through said guide portion to control said switch; and said switch is carried by said switch mounting portion in a position to be operated to alternate positions in accordance with vertical movement of said rod.
Claim 3
Dependent Claim
46 words
In a dishwasher according to claim 1 wherein: said float guide portion is substantially vertically aligned and centered with said opening and said tub wall, and said switch mounting portion located below said tub wall extends generally radially to one side from said tub wall opening.
Claim 4
Dependent Claim
54 words
In a dishwasher according to claim 2 wherein: said switch mounting portion comprises a generally hollow housing open on one face, and includes track means and seat means on the inner faces of a pair of opposite sides for slidably receiving and frictionally holding said switch in a single predetermined position in said housing.
References Cited (Backward Citations)
US3464437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |