Patent US3870858A successfully refreshed from Google Patents.
US3870858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostat mounting
Assignee: General Electric Co
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Filing: 1973-11-09
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Granted: 1975-03-11
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Expires: 1993-11-09
Abstract
Abstract There is disclosed a dishwasher having a unipartite plastic tub which is interiorly heated. A thermostat is mounted exteriorly of the tub and binds against an imperforate wall section. The thermal gradient across the imperforate plastic wall is determinable and the thermostat is calibrated to deenergize the heater in response to a predetermined temperature inside the tub.
Inventors
- 👤 Thomas O Schimke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:46
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/42; A47L15/4287
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
162 words
A dishwasher of the type comprising a tub and a door together providing a wash chamber, means for heating the wash chamber, a thermostat for deenergizing the heating means in response to a predetermined temperature in the wash chamber and means mounting the thermostat in heat exchange relation with the wash chamber, the improvement wherein the tub includes an imperforate wall section having a surface exposed to the wash chamber and an opposite surface; the thermostat includes a body having a flange extending outwardly therefrom past the periphery of the thermostat body and a metallic heat transfer member, including a central projection, between said wall section and said body mating with the opposite surface of the imperforate wall section; and the mounting means includes means comprising a receptacle having a cavity therein for receiving the thermostat body and an upper edge abutting said flange and means securing said receptacle to said tub thereby binding the heat transfer member against the opposite surface.
Claim 2
Dependent Claim
162 words
A dishwasher of the type comprising a tub and a door together providing a wash chamber, means for heating the wash chamber, a thermostat for deenergizing the heating means in response to a predetermined temperature in the wash chamber and means mounting the thermostat in heat exchange relation with the wash chamber, the improvement wherein the tub includes an imperforate wall section having a surface exposed to the wash chamber and an opposite surface; the thermostat includes a body having a flange extending outwardly therefrom past the periphery of the thermostat body and a metallic heat transfer member, including a central projection, between said wall section and said body mating with the opposite surface of the imperforate wall section; and the mounting means includes means comprising a receptacle having a cavity therein for receiving the thermostat body and an upper edge abutting said flange and means securing said receptacle to said tub thereby binding the heat transfer member against the opposite surface.
Claim 3
Dependent Claim
162 words
A dishwasher of the type comprising a tub and a door together providing a wash chamber, means for heating the wash chamber, a thermostat for deenergizing the heating means in response to a predetermined temperature in the wash chamber and means mounting the thermostat in heat exchange relation with the wash chamber, the improvement wherein the tub includes an imperforate wall section having a surface exposed to the wash chamber and an opposite surface; the thermostat includes a body having a flange extending outwardly therefrom past the periphery of the thermostat body and a metallic heat transfer member, including a central projection, between said wall section and said body mating with the opposite surface of the imperforate wall section; and the mounting means includes means comprising a receptacle having a cavity therein for receiving the thermostat body and an upper edge abutting said flange and means securing said receptacle to said tub thereby binding the heat transfer member against the opposite surface.
Claim 4
Dependent Claim
162 words
A dishwasher of the type comprising a tub and a door together providing a wash chamber, means for heating the wash chamber, a thermostat for deenergizing the heating means in response to a predetermined temperature in the wash chamber and means mounting the thermostat in heat exchange relation with the wash chamber, the improvement wherein the tub includes an imperforate wall section having a surface exposed to the wash chamber and an opposite surface; the thermostat includes a body having a flange extending outwardly therefrom past the periphery of the thermostat body and a metallic heat transfer member, including a central projection, between said wall section and said body mating with the opposite surface of the imperforate wall section; and the mounting means includes means comprising a receptacle having a cavity therein for receiving the thermostat body and an upper edge abutting said flange and means securing said receptacle to said tub thereby binding the heat transfer member against the opposite surface.
Claim 5
Dependent Claim
36 words
The dishwasher of claim 1 wherein the receptacle is made of a material having a heat transfer capability less than the heat transfer member, the cavity and the heat transfer member substantially enclosing the thermostat body.
Claim 6
Dependent Claim
43 words
The dishwasher of claim 1 wherein the securing means comprises a member extending on opposite sides of the receptaclE and means fastening the opposite sides of the member to the tub, the wall section and the member being deflected away from each other.
Claim 7
Dependent Claim
31 words
The dishwasher of claim 3 wherein the fastening means comprises bosses extending away from the tub on opposite sides of the imperforate wall section and threaded fasteners secured to the bosses.
Claim 8
Dependent Claim
26 words
The dishwasher of claim 3 wherein the tub comprises a unipartite organic resin structure and a metallic liner exterior of the tub secured to the member.
Claim 9
Dependent Claim
35 words
The dishwasher of claim 5 comprising a vertical member extending across the securing member beyond the limits thereof between the liner and the receptacle for diverting water moving from the liner away from the receptacle.
Claim 10
Dependent Claim
36 words
The dishwasher of claim 3 wherein the imperforate wall section is more flexible than the member, the mounting means placing the heat transfer member in a position deflecting the wall section away from its relaxed position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |