US3750076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control boxes
Assignee: Emerson Electric Co
•
Filing: 1972-09-19
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Granted: 1973-07-31
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Expires: 1992-09-19
Abstract
Abstract An enclosed control box, including a cover movably secured to the box to normally close a side thereof. The sensor of a thermostatic switch extends through an opening in a wall of the control box and senses heat within a heater housing. The switch has a reset button, and a strip of spring metal is secured within the housing and has one portion disposed adjacent to the reset button and another portion underlying an opening in the cover. The reset button is actuated when force is applied through the cover hole and against the underlying part of the spring metal strip, so that the cover need not be opened or removed to reset the switch.
Inventors
- 👤 B Hines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:08
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/64; H01H37/70
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
215 words
In combination, an enclosed control box including a cover movably secured to said box to normally close a side thereof, one wall of said box being adapted to be disposed adjacent to a housing in which a heater is disposed, said one wall having an opening, a thermostatic switch mounted on said one wall and having a reset button located in the interior of said control box and a heat sensor projecting through said one wall opening and adapted to sense heat within said housing, said switch having contacts which are moved from set position upon predetermined heat sensed by said sensor to thereby inactivate said heater, and said reset button being operable to reset said switch contacts to activate said heater, an opening in said cover, and resilient means carried by said control box and disposed within the interior thereof, said resilient means having parts respectively disposed adjacent to said cover opening and to said reset button, said resilient means being deformed from a normal condition by force applied through said cover opening and against a part thereadjacent to move the part adjacent to said reset button against the latter to reset said switch contacts, whereby said switch contacts may be reset without moving said cover from its position normally closing said box side.
Claim 2
Dependent Claim
215 words
In combination, an enclosed control box including a cover movably secured to said box to normally close a side thereof, one wall of said box being adapted to be disposed adjacent to a housing in which a heater is disposed, said one wall having an opening, a thermostatic switch mounted on said one wall and having a reset button located in the interior of said control box and a heat sensor projecting through said one wall opening and adapted to sense heat within said housing, said switch having contacts which are moved from set position upon predetermined heat sensed by said sensor to thereby inactivate said heater, and said reset button being operable to reset said switch contacts to activate said heater, an opening in said cover, and resilient means carried by said control box and disposed within the interior thereof, said resilient means having parts respectively disposed adjacent to said cover opening and to said reset button, said resilient means being deformed from a normal condition by force applied through said cover opening and against a part thereadjacent to move the part adjacent to said reset button against the latter to reset said switch contacts, whereby said switch contacts may be reset without moving said cover from its position normally closing said box side.
Claim 3
Dependent Claim
67 words
The construction according to claim 1 wherein said resilient means comprises a strip of spring metal having one end secured to said one wall, its other end underlying the opening in said cover, and an intermediate portion adjacent to but normally spaced from said reset button, but movable thereagainst when force is applied through said cover opening and against said other end of said spring metal strip.
Claim 4
Dependent Claim
219 words
In combination, an enclosed control box including a cover movably secured to said box to normally close a side thereof, one wall of said box located opposite said cover being adapted to be disposed adjacent to a housing in which a heater is disposed, said one wall having an opening, a thermostatic switch mounted on the inner surface of said one wall and having a reset button located in the interior of said control box and a heat sensor projecting through said one wall opening and adapted to sense heat within said housing, said switch having contacts which are moved from set position upon predetermined heat sensed by said sensor to thereby inactivate said heater, and said reset button being operable to reset said switch contacts to activate said heater, an opening in said cover, and resilient means carried by said control box and fully disposed therewithin, said resilient means having a part underlying said cover opening and another part adjacent to said reset button, said resilient means being deformed from a normal condition by force applied through said cover opening and against said underlying part to move said other part against said reset button to reset said switch contacts, whereby said switch contacts may be reset without moving said cover from its position normally closing said box side.
Claim 5
Dependent Claim
219 words
In combination, an enclosed control box including a cover movably secured to said box to normally close a side thereof, one wall of said box located opposite said cover being adapted to be disposed adjacent to a housing in which a heater is disposed, said one wall having an opening, a thermostatic switch mounted on the inner surface of said one wall and having a reset button located in the interior of said control box and a heat sensor projecting through said one wall opening and adapted to sense heat within said housing, said switch having contacts which are moved from set position upon predetermined heat sensed by said sensor to thereby inactivate said heater, and said reset button being operable to reset said switch contacts to activate said heater, an opening in said cover, and resilient means carried by said control box and fully disposed therewithin, said resilient means having a part underlying said cover opening and another part adjacent to said reset button, said resilient means being deformed from a normal condition by force applied through said cover opening and against said underlying part to move said other part against said reset button to reset said switch contacts, whereby said switch contacts may be reset without moving said cover from its position normally closing said box side.
Claim 6
Dependent Claim
67 words
The construction according to claim 3 wherein said resilient means comprises a strip of spring metal having one end secured to said one wall, its other end underlying the opening in said cover, and an intermediate portion adjacent to but normally spaced from said reset button, but movable thereagainst when force is applied through said cover opening and against said other end of said spring metal strip.
Claim 7
Dependent Claim
13 words
The construction according to claim 4 wherein said spring metal strip is S-shaped.
Claim 8
Dependent Claim
41 words
The construction according to claim 4 wherein a fastening device passes through aligned openings in said one end of said spring metal strip and a mounting flange of said thermostatic switch to hold both secured to said control box one wall.
Claim 9
Dependent Claim
34 words
The construction according to claim 6 wherein said fastening device is a sheet metal screw and wherein the intermediate portion Of said spring metal strip has an opening for passing a screw moving device.
Claim 10
Dependent Claim
37 words
The construction according to claim 3 wherein said cover has a peripheral flange which overlaps the surface of the box around the box opening, and said cover is secured to said box by a plurality of screws.
Claim 11
Dependent Claim
25 words
The construction according to claim 4 wherein a tongue is lanced from said intermediate portion and is bent downwardly for cooperation with said reset button.
References Cited (Backward Citations)
US2195012A
Cited
US3697714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |