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US3735310A Expired / Lapsed US ⏱️ 0.0 years remaining

Temperature responsive electrical switch assembly

Assignee: Fasco Controls Corp
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Filing: 1971-08-10
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Granted: 1973-05-22
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Expires: 1991-08-10
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Abstract

Abstract A temperature responsive electrical switch assembly has a single housing containing a bimetallic switching member and a thermistor; a plurality of adjustable contact members, electrically connected to a first terminal member, are positioned as to be alternately engageable with the bimetallic switching member; the thermistor is resiliently held against and in electrically conductive relationship to the housing by one end of an electrically conductive spring member which has its other end connected to a second electrical terminal member.

Inventors

  • 👤 A Kochanski

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 02:06
CPC Classifications
H; H01; H01H; H01H61/00; H01H61/01; H01H61/013; H01H37/00; H01H37/02; H01H37/12; H01H37/28

Claims Analysis

Total Claims: 16
Claim 1
Independent Claim 190 words
A temperature responsive electrical switch assembly, comprising a housing, a chamber formed within said housing, a first terminal member carried by said housing and adapted for connection to a first associated electrical circuit, a first contact member carried by said terminal member, a second terminal member carried by said housing and adapted for connection to a second associated electrical circuit, a second contact member carried by said second terminal member, electrically conductive moveable temperature responsive means carried by said housing within said housing, said moveable temperature responsive means being effective during a first range of temperatures to engage said first contact member and thereby close said first associated electrical circuit therethrough, said moveable temperature responsive means being effective during a second range of temperatures to be in disengagement with said first contact member and thereby open said first associated electrical circuit therethrough, a thermistor situated in said chamber of said housing, and an electrically conductive member operatively resiliently engaging said thermistor and said second contact member, said thermistor being effective to vary the current flow through said second associated electrical circuitry in accordance with the temperature sensed by said thermistor.
Claim 2
Dependent Claim 190 words
A temperature responsive electrical switch assembly, comprising a housing, a chamber formed within said housing, a first terminal member carried by said housing and adapted for connection to a first associated electrical circuit, a first contact member carried by said terminal member, a second terminal member carried by said housing and adapted for connection to a second associated electrical circuit, a second contact member carried by said second terminal member, electrically conductive moveable temperature responsive means carried by said housing within said housing, said moveable temperature responsive means being effective during a first range of temperatures to engage said first contact member and thereby close said first associated electrical circuit therethrough, said moveable temperature responsive means being effective during a second range of temperatures to be in disengagement with said first contact member and thereby open said first associated electrical circuit therethrough, a thermistor situated in said chamber of said housing, and an electrically conductive member operatively resiliently engaging said thermistor and said second contact member, said thermistor being effective to vary the current flow through said second associated electrical circuitry in accordance with the temperature sensed by said thermistor.
Claim 3
Dependent Claim 81 words
A temperature responsive electrical switch assembly according to claim 1, wherein said moveable temperature responsive means comprises a bimetallic member having a base portion held against one end of said chamber of said housing, said bimetallic member also comprising a moveable arm portion moveable into and out of contact with said first contact member in accordance with temperature, and wherein said electrically conductive member is effective for holding said thermistor operatively against said one end of said chamber of said housing.
Claim 4
Dependent Claim 278 words
A temperature responsive electrical switch assembly, comprising a housing, a chamber formed within said housing, a first terminal member carried by said housing and adapted for connection to a first associated electrical circuit, a first contact member carried by said terminal member, a second terminal member carried by said housing and adapted for connection to a second associated electrical circuit, a second contact member carried by said second terminal member, electrically conductive moveable temperature responsive means carried by said housing within said housing, said moveable temperature responsive means being effective during a first range of temperatures to engage said first contact member and thereby close said first associated electrical circuit therethrough, said moveable temperature responsive means being effective during a second range of temperatures to be in disengagement with said first contact member and thereby open said first associated electrical circuit therethrough, a thermistor situated in said chamber of said housing, and an electrically conductive member operatively resiliently engaging said thermistor and said second contact member, said thermistor being effective to vary the current flow through said second associated electrical circuitry in accordance with the temperature sensed by said thermistor, said moveable temperature responsive means comprising a bimetallic member having a base portion helD against one end of said chamber of said housing, said bimetallic member also comprising a moveable arm portion moveable into and out of contact with said first contact member in accordance with temperature, said electrically conductive member being effective for holding said thermistor against said one end of said chamber of said housing, and further comprising electrical insulating means peripherally surrounding said thermistor to prevent direct contact between said bimetallic member and said thermistor.
Claim 5
Dependent Claim 278 words
A temperature responsive electrical switch assembly, comprising a housing, a chamber formed within said housing, a first terminal member carried by said housing and adapted for connection to a first associated electrical circuit, a first contact member carried by said terminal member, a second terminal member carried by said housing and adapted for connection to a second associated electrical circuit, a second contact member carried by said second terminal member, electrically conductive moveable temperature responsive means carried by said housing within said housing, said moveable temperature responsive means being effective during a first range of temperatures to engage said first contact member and thereby close said first associated electrical circuit therethrough, said moveable temperature responsive means being effective during a second range of temperatures to be in disengagement with said first contact member and thereby open said first associated electrical circuit therethrough, a thermistor situated in said chamber of said housing, and an electrically conductive member operatively resiliently engaging said thermistor and said second contact member, said thermistor being effective to vary the current flow through said second associated electrical circuitry in accordance with the temperature sensed by said thermistor, said moveable temperature responsive means comprising a bimetallic member having a base portion helD against one end of said chamber of said housing, said bimetallic member also comprising a moveable arm portion moveable into and out of contact with said first contact member in accordance with temperature, said electrically conductive member being effective for holding said thermistor against said one end of said chamber of said housing, and further comprising electrical insulating means peripherally surrounding said thermistor to prevent direct contact between said bimetallic member and said thermistor.
Claim 6
Dependent Claim 308 words
A temperature responsive electrical switch assembly, comprising a housing, a chamber formed within said housing, a first terminal member carried by said housing and adapted for connection to a first associated electrical circuit, a first contact member carried by said terminal member, a second terminal member carried by said housing and adapted for connection to a second associated electrical circuit, a second contact member carried by said second terminal member, electrically conductive moveable temperature responsive means carried by said housing within said housing, said moveable temperature responsive means being effective during a first range of temperatures to engage said first contact member and thereby close said first associated electrical circuit therethrough, said moveable temperature responsive means being effective during a second range of temperatures to be in disengagement with said first contact member and thereby open said first associated electrical circuit therethrough, a thermistor situated in said chamber of said housing, and an electrically conductive member operatively resiliently engaging said thermistor and said second contact member, said thermistor being effective to vary the current flow through said second associated electrical circuitry in accordance with the temperature sensed by said thermistor, said moveable temperature responsive means comprising a bimetallic member having a base portion held against one end of said chamber of said housing, said bimetallic member also comprising a moveable arm portion moveable into and out of engagement with said first contact member in accordance with temperature, said electrically conductive member being effective for holding said thermistor against said one end of said chamber of said housing, and further comprising electrical insulating means peripherally surrounding said thermistor to prevent direct contact between said bimetallic member and said thermistor, and an aperture formed through said base portion of said bimetallic member, said aperture being of a size and configuration to accept therein said thermistor and said electrical insulating means.
Claim 7
Dependent Claim 308 words
A temperature responsive electrical switch assembly, comprising a housing, a chamber formed within said housing, a first terminal member carried by said housing and adapted for connection to a first associated electrical circuit, a first contact member carried by said terminal member, a second terminal member carried by said housing and adapted for connection to a second associated electrical circuit, a second contact member carried by said second terminal member, electrically conductive moveable temperature responsive means carried by said housing within said housing, said moveable temperature responsive means being effective during a first range of temperatures to engage said first contact member and thereby close said first associated electrical circuit therethrough, said moveable temperature responsive means being effective during a second range of temperatures to be in disengagement with said first contact member and thereby open said first associated electrical circuit therethrough, a thermistor situated in said chamber of said housing, and an electrically conductive member operatively resiliently engaging said thermistor and said second contact member, said thermistor being effective to vary the current flow through said second associated electrical circuitry in accordance with the temperature sensed by said thermistor, said moveable temperature responsive means comprising a bimetallic member having a base portion held against one end of said chamber of said housing, said bimetallic member also comprising a moveable arm portion moveable into and out of engagement with said first contact member in accordance with temperature, said electrically conductive member being effective for holding said thermistor against said one end of said chamber of said housing, and further comprising electrical insulating means peripherally surrounding said thermistor to prevent direct contact between said bimetallic member and said thermistor, and an aperture formed through said base portion of said bimetallic member, said aperture being of a size and configuration to accept therein said thermistor and said electrical insulating means.
Claim 8
Dependent Claim 311 words
A temperature responsive electrical switch assembly, comprising a housing, a chamber formed within said housing, a first terminal member carried by said housing and adapted for connection to a first associated electrical circuit, a first contact member carried by said terminal member, a second terminal member carried by said housing and adapted for connection to a second associated electrical circuit, a second contact member carried by said second terminal member, electrically conductive moveable temperature responsive means carried by said housing within said housing, said moveable temperature responsive means being effective during a first range of temperatures to engage said first contact member and thereby close said first associated electrical circuit therethrough, said moveable temperature responsive means being effective during a second range of temperatures to be in disengagement with said first contact member and thereby open said first associated electrical circuit therethrough, a thermistor situated in said chamber of said housing, and an electrically conductive member operatively resiliently engaging said thermistor and said second contact member, said thermistor being effective to vary the current flow through said second associated electrical circuitry in accordance with the temperature sensed by said thermistor, said moveable tEmperature responsive means comprising a bimetallic member having a base portion held against one end of said chamber of said housing, said bimetallic member also comprising a moveable arm portion moveable into and out of engagement with said first contact member in accordance with temperature, said electrically conductive member being effective for holding said thermistor against said one end of said chamber of said housing, and further comprising electrical insulating means peripherally surrounding said thermistor to prevent direct contact between said bimetallic member and said thermistor, and an open-ended tubular portion formed integrally with said base portion of said bimetallic member, said tubular portion having an internal dimension sufficient to accept therein said thermistor and said electrical insulating means.
Claim 9
Dependent Claim 311 words
A temperature responsive electrical switch assembly, comprising a housing, a chamber formed within said housing, a first terminal member carried by said housing and adapted for connection to a first associated electrical circuit, a first contact member carried by said terminal member, a second terminal member carried by said housing and adapted for connection to a second associated electrical circuit, a second contact member carried by said second terminal member, electrically conductive moveable temperature responsive means carried by said housing within said housing, said moveable temperature responsive means being effective during a first range of temperatures to engage said first contact member and thereby close said first associated electrical circuit therethrough, said moveable temperature responsive means being effective during a second range of temperatures to be in disengagement with said first contact member and thereby open said first associated electrical circuit therethrough, a thermistor situated in said chamber of said housing, and an electrically conductive member operatively resiliently engaging said thermistor and said second contact member, said thermistor being effective to vary the current flow through said second associated electrical circuitry in accordance with the temperature sensed by said thermistor, said moveable tEmperature responsive means comprising a bimetallic member having a base portion held against one end of said chamber of said housing, said bimetallic member also comprising a moveable arm portion moveable into and out of engagement with said first contact member in accordance with temperature, said electrically conductive member being effective for holding said thermistor against said one end of said chamber of said housing, and further comprising electrical insulating means peripherally surrounding said thermistor to prevent direct contact between said bimetallic member and said thermistor, and an open-ended tubular portion formed integrally with said base portion of said bimetallic member, said tubular portion having an internal dimension sufficient to accept therein said thermistor and said electrical insulating means.
Claim 10
Dependent Claim 44 words
A temperature responsive electrical switch assembly according to claim 5, wherein said electrically conductive member includes a foot portion formed integrally therewith and abutably engaging said thermistor, said foot portion being of such a dimension as to be received within said electrical insulating means.
Claim 11
Dependent Claim 52 words
A temperature responsive electrical switch assembly according to claim 6, wherein said electrically conductive member comprises a leg-like portion extending from said foot portion to said second contact member, said leg-like portion being of generally bowed configuration in order to provide a degree of resiliency between said thermistor and said contact member.
Claim 12
Dependent Claim 318 words
A temperature responsive electrical switch assembly, comprising a housing, a chamber formed within said housing, a first terminal member carried by said housing and adapted for connection to a first associated electrical circuit, a first contact member carried by said terminal member, a second terminal member carried by said housing and adapted for connection to a second associated electrical circuit, a second contact member carried by said second terminal member, electrically conductive moveable temperature responsive means carried by said housing within said housing, said moveable temperature responsive means being effective during a first range of temperatures to engage said first contact member and thereby close said first associated electrical circuit therethrough, said moveable temperature responsive means being effective during a second range of temperatures to be in disengagement with said first contact member and thereby open said first associated electrical circuit therethrough, a thermistor situated in said chamber of said housing, and an electrically conductive member operatively resiliently engaging said thermistor and said second contact member, said thermistor being effective to vary the current flow through said second associated electrical circuitry in accordance with the temperature sensed by said thermistor, said moveable temperature responsive means comprising a bimetallic member having a base portion held against one end of said chamber of said housing, said bimetallic member also comprising a moveable arm portion moveable into and out of contact with said first contact member in accordance with temperature, said electrically conductive member being effective for holding said thermistor against said one end of said chamber of said housing, and further comprising electrical insulating means peripherally surrounding said thermistor to prevent direct contact between said bimetallic member and said thermistor, and said electrically conductive member comprising a foot portion formed integrally therewith and abutably engaging said thermistor, said foot portion including extending side wall means defining a clearance therebetween sufficient to accept therein said thermistor and said electrical insulating means.
Claim 13
Dependent Claim 318 words
A temperature responsive electrical switch assembly, comprising a housing, a chamber formed within said housing, a first terminal member carried by said housing and adapted for connection to a first associated electrical circuit, a first contact member carried by said terminal member, a second terminal member carried by said housing and adapted for connection to a second associated electrical circuit, a second contact member carried by said second terminal member, electrically conductive moveable temperature responsive means carried by said housing within said housing, said moveable temperature responsive means being effective during a first range of temperatures to engage said first contact member and thereby close said first associated electrical circuit therethrough, said moveable temperature responsive means being effective during a second range of temperatures to be in disengagement with said first contact member and thereby open said first associated electrical circuit therethrough, a thermistor situated in said chamber of said housing, and an electrically conductive member operatively resiliently engaging said thermistor and said second contact member, said thermistor being effective to vary the current flow through said second associated electrical circuitry in accordance with the temperature sensed by said thermistor, said moveable temperature responsive means comprising a bimetallic member having a base portion held against one end of said chamber of said housing, said bimetallic member also comprising a moveable arm portion moveable into and out of contact with said first contact member in accordance with temperature, said electrically conductive member being effective for holding said thermistor against said one end of said chamber of said housing, and further comprising electrical insulating means peripherally surrounding said thermistor to prevent direct contact between said bimetallic member and said thermistor, and said electrically conductive member comprising a foot portion formed integrally therewith and abutably engaging said thermistor, said foot portion including extending side wall means defining a clearance therebetween sufficient to accept therein said thermistor and said electrical insulating means.
Claim 14
Dependent Claim 152 words
A temperature sensitive and responsive probe assembly for use in combination with an associated electrical circuit, comprising a housing, a chamber formed within said housing, terminal means carried by said housing and adapted for connection to said associated electrical circuit, a thermistor situated within said chamber, said thermistor and said terminal means being spaced from each other as to be devoid of any physical and electrical contact therebetween, and an electrically conductive extension situated within said chamber and operatively engaging said terminal means and said thermistor, said thermistor being effective to vary the current flow through said associated electrical circuitry in accordance with the temperature sensed by said thermistor, said electrically conductive extension comprising a resilient portion effective for continually applying a resilient force against said thermistor in order to continually urge said terminal means and said thermistor in directions generally away from each other and thereby assure continued electrical conductivity therebetween.
Claim 15
Dependent Claim 152 words
A temperature sensitive and responsive probe assembly for use in combination with an associated electrical circuit, comprising a housing, a chamber formed within said housing, terminal means carried by said housing and adapted for connection to said associated electrical circuit, a thermistor situated within said chamber, said thermistor and said terminal means being spaced from each other as to be devoid of any physical and electrical contact therebetween, and an electrically conductive extension situated within said chamber and operatively engaging said terminal means and said thermistor, said thermistor being effective to vary the current flow through said associated electrical circuitry in accordance with the temperature sensed by said thermistor, said electrically conductive extension comprising a resilient portion effective for continually applying a resilient force against said thermistor in order to continually urge said terminal means and said thermistor in directions generally away from each other and thereby assure continued electrical conductivity therebetween.
Claim 16
Dependent Claim 61 words
A temperature sensitive probe assembly according to claim 9, wherein said electrically conductive extension also comprises locating means carried thereby, said locating means being effective to operatively engage said thermistor at at least a plurality of generally opposed points generally circumscribing said thermistor and thereby prevent said thermistor from moving out of an established physical relationship to said electrically conductive extension.

References Cited (Backward Citations)

US1898174A Cited
US1894150A Cited
US2945933A Cited
US3019319A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-05-21 1976-11-20 1977-05-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-05-21 1980-11-20 1981-05-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-05-21 1984-11-20 1985-05-22 $7700.00 Window Closed / Lapsed

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