US3663916A - Sensitive high capacity room thermostat - Google Patents

Sensitive high capacity room thermostat Download PDF

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Publication number
US3663916A
US3663916A US749715A US3663916DA US3663916A US 3663916 A US3663916 A US 3663916A US 749715 A US749715 A US 749715A US 3663916D A US3663916D A US 3663916DA US 3663916 A US3663916 A US 3663916A
Authority
US
United States
Prior art keywords
plate
face plate
amplifier
center
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US749715A
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English (en)
Inventor
Roland D Beck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deutsche ITT Industries GmbH filed Critical Deutsche ITT Industries GmbH
Application granted granted Critical
Publication of US3663916A publication Critical patent/US3663916A/en
Assigned to ITT CORPORATION reassignment ITT CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/275—Control of temperature characterised by the use of electric means with sensing element expanding, contracting, or fusing in response to changes of temperature
    • G05D23/27535—Details of the sensing element
    • G05D23/2754—Details of the sensing element using bimetallic element
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
    • G05D23/08—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature with bimetallic element
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/185—Control of temperature with auxiliary non-electric power
    • G05D23/1854—Control of temperature with auxiliary non-electric power with bimetallic element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/12—Means for adjustment of "on" or "off" operating temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/46—Thermally-sensitive members actuated due to expansion or contraction of a solid

Definitions

  • ABSTRACT prises a plastic face plate which senses am- [58] FieldoiSearchestablished.
  • the invention com bient temperature and operates a metal amplifier plate which plate to actuate a thermostat pansion of the two plates causes the bows outwardly of the face switch.
  • the differential ex switch actuation com bient temperature and operates a metal amplifier plate which plate to actuate a thermostat pansion of the two plates causes the bows outwardly of the face switch.
  • the differential ex switch actuation com bient temperature and operates a metal amplifier plate which plate to actuate a thermostat pansion of the two plates causes the bows outwardly of the face switch.
  • the differential ex switch actuation The differential ex switch actuation.
  • SHEET 2 [IF 2 INVENTOR Edd/W00. 566K 1 SENSITIVE HIGH CAPACITY ROOM THEglMOSTAT BACKGROUND OF THE INVENTION
  • the invention relates to heat sensing devices, and more particularly to an improved inexpensive thermostat.
  • the above-described and other disadvantages of the prior are overcome by providing athermostat control including a face plate, and an amplifier plate having its ends fixedrelative to the end of the face plate.
  • the differential expansion of the two plates causes switch actuation. Due to the fact that the face plate is open to the atmosphere, the droop problem of the prior art is overcome. Further, the face plate has grooves into which the amplifier plate snap fits.
  • the thermostat control of the invention is therefore a relatively control.
  • FIG. 1 is a perspective view of one embodiment of the present invention
  • FIG. 2 is a sectional view taken on the line 2-2 shown in FIG. I; Y
  • FIG. 3 is a perspective view of an amplifier plate employed with the invention
  • v I FIG. 4 is a front elevational view, partly in section, showing the dial of the present invention.
  • Switch 18 may thus be entirely conventional.
  • Face plate 11 is fixed to bracket 17 by eyelets 26 and 27.
  • Face plate 11 has grooves at 28 and 29 into which the ends of an amplifier plate 30 are snap fit. .Amplifier plate 30 is bowed to the right as shown in FIG. 2. t
  • amplifier plate 30 has an opening 31 through which eyelet 26 projects to fix face plate 11 to bracket 17.
  • Amplifier plate 30 also has an opening 32 through which eyelet 27 projects to fix face plate 11 to bracket 17.
  • Amplifier plate 30 has a serrated opening 33 to which a bushing 34 is staked as shown in FIG. 2.
  • Dial 12 has a projection As shown in FIG. 1, dial 12 has indicia at 37. This indicia is compared with a projection 38 that is integral with face plate 1 1. When the temperature of indicia 37 is matched to the position of projection 38, switch 18 will be actuated at a corresponding temperature.
  • Set screw 36 is provided to calibrate the instrument. When amplifier plate 30 bows out sufiiciently from face plate 11, set screw 36 will depress a button 39 on switch 18 and actuate the In the operation of the thermostat control of the present invention, set screw 36 is adjusted to calibrate the control. Dial 12 is then turned to a desired temperature. This will locate screw 36 at a pre-detennined position relative to switch 18. .Face plate 1 1' may be made of a conventional plasticsuch as a polycarbonate plastic, Amplifier plate 30 may be made of stainless steel. Amplifier plate 30 will thus bow out more or less dependent upon the temperature. The difi'erential expansion of faceplate l1 and amplifier plate 30 will thus cause actuation and deactuation of switch 18.
  • a thermostat comprising: a substantially flat face plate; an amplifier plate having its ends fixed relative to the ends of said face plate in a position to bow outwardly of the face plate on one side thereof, said face plate having a higher thermal coefiicient of expansion than that of said amplifier plate; a base adapted to be located in a fixed position; a switch fixed to said base, said switch having an actuating member positioned at the center of said amplifier plate; means fixed to the center of said amplifier plate to move said member when said amplifier plate moves, said amplifier plate having a hole therethrough contiguous to the center thereof; and a rigid body fixed rigidly to said face plate and said base, said body holding the center of said face plate in fixed position, said body extending through saId amplifier plate hole spaced from and out of contact with saidamplifier plate, said amplifier plate being positioned between said face plate and said base.
  • a thermostat control comprising: a face plate; an amplifier plate having its ends fixed relative to the ends of said face plate in a position to bow outwardly of the face plate when said face plate cools, said face plate having a thermal coefficient of expansion substantially greater than that of said amplifier plate; a base; a switch having an actuating member; means to support said face plate near its center in a positionfixed relative to said base; means to support said switch in a position fixed relative to said base near the center of said amplifier plate; and adjustable means fixed to the center of said amplifier plate in a position such that said adjustable means engages said member at a predetermined temperature, said adjustable means including a bushing fixed to said amplifier plate, said bushing being internally threaded, a hollow shaft plifier plate, said plates being rectangular, said face plate being made of plastic, said amplifier plate being made of metal, said face plate having a groove at each end thereof to receive the corresponding ends of said amplifier plate, said amplifier plate having a length greater than the space between said grooves so as to snap fit therein and bow outwardly of said

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
  • Control Of Temperature (AREA)
US749715A 1968-08-02 1968-08-02 Sensitive high capacity room thermostat Expired - Lifetime US3663916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74971568A 1968-08-02 1968-08-02

Publications (1)

Publication Number Publication Date
US3663916A true US3663916A (en) 1972-05-16

Family

ID=25014872

Family Applications (1)

Application Number Title Priority Date Filing Date
US749715A Expired - Lifetime US3663916A (en) 1968-08-02 1968-08-02 Sensitive high capacity room thermostat

Country Status (7)

Country Link
US (1) US3663916A (de)
JP (1) JPS4912549B1 (de)
CA (1) CA940981A (de)
DE (1) DE1938522A1 (de)
FR (1) FR2014929A1 (de)
GB (1) GB1222788A (de)
NL (1) NL6911738A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001753A (en) * 1974-12-17 1977-01-04 Federal Pioneer Electric Limited Thermostat having stable mounting support
US5821801A (en) * 1994-06-13 1998-10-13 Starozik Industires Ltd. Electrical thermostat

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US887087A (en) * 1907-05-29 1908-05-12 Harry G Geissinger Electric thermostat.
US1859605A (en) * 1930-03-03 1932-05-24 Buckeye Incubator Mfg Company Electric switch
US2691082A (en) * 1947-10-02 1954-10-05 Proctor Electric Co Circuit controlling device
US2789176A (en) * 1953-04-27 1957-04-16 Mercier Jean Pressure switch
US2797280A (en) * 1955-10-05 1957-06-25 Charles H Strange Control instruments for kilns or ovens
US2848569A (en) * 1955-05-10 1958-08-19 Bliss E W Co Automation control device
US2937255A (en) * 1957-10-23 1960-05-17 Ulanet Herman Temperature control
US3131274A (en) * 1961-01-25 1964-04-28 Schmidinger Joseph Pull means for hot wire flashers or the like
US3174017A (en) * 1961-08-02 1965-03-16 American Thermostat Corp Adjustable thermostat with overriding control
US3423713A (en) * 1965-07-21 1969-01-21 American Thermostat Corp Thermostat construction

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US887087A (en) * 1907-05-29 1908-05-12 Harry G Geissinger Electric thermostat.
US1859605A (en) * 1930-03-03 1932-05-24 Buckeye Incubator Mfg Company Electric switch
US2691082A (en) * 1947-10-02 1954-10-05 Proctor Electric Co Circuit controlling device
US2789176A (en) * 1953-04-27 1957-04-16 Mercier Jean Pressure switch
US2848569A (en) * 1955-05-10 1958-08-19 Bliss E W Co Automation control device
US2797280A (en) * 1955-10-05 1957-06-25 Charles H Strange Control instruments for kilns or ovens
US2937255A (en) * 1957-10-23 1960-05-17 Ulanet Herman Temperature control
US3131274A (en) * 1961-01-25 1964-04-28 Schmidinger Joseph Pull means for hot wire flashers or the like
US3174017A (en) * 1961-08-02 1965-03-16 American Thermostat Corp Adjustable thermostat with overriding control
US3423713A (en) * 1965-07-21 1969-01-21 American Thermostat Corp Thermostat construction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001753A (en) * 1974-12-17 1977-01-04 Federal Pioneer Electric Limited Thermostat having stable mounting support
US5821801A (en) * 1994-06-13 1998-10-13 Starozik Industires Ltd. Electrical thermostat

Also Published As

Publication number Publication date
NL6911738A (de) 1970-02-04
DE1938522A1 (de) 1970-02-05
GB1222788A (en) 1971-02-17
CA940981A (en) 1974-01-29
FR2014929A1 (de) 1970-04-24
JPS4912549B1 (de) 1974-03-26

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ITT CORPORATION

Free format text: CHANGE OF NAME;ASSIGNOR:INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION;REEL/FRAME:004389/0606

Effective date: 19831122