GB531794A - Improvements in or relating to thermostats - Google Patents

Improvements in or relating to thermostats

Info

Publication number
GB531794A
GB531794A GB22404/39A GB2240439A GB531794A GB 531794 A GB531794 A GB 531794A GB 22404/39 A GB22404/39 A GB 22404/39A GB 2240439 A GB2240439 A GB 2240439A GB 531794 A GB531794 A GB 531794A
Authority
GB
United Kingdom
Prior art keywords
central strip
hole
strips
shank
aug
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
Application number
GB22404/39A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB531794A publication Critical patent/GB531794A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H37/5418—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting using cantilevered bimetallic snap elements
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

531,794. Thermal switches. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Aug. 2, 1939, No. 22404. Convention date, Aug. 27, 1938. [Class 38 (v)] [Also in Group XIII] A bi-metallic actuating member is formed with two arcuate slots 30 defining a central strip 40 and two side strips 42. A circular hole 32 is formed midway between the ends of the slots, extending into the central strip, so that a support extending through the hole co-operates directly with the central strip as distinguished from the side strips. The member is then bowed and heat-treated so that the strip 40 is bowed downwardly more than the strips 42, the highexpansive side being upward. A snap action is thus obtained. The rivet 16 comprises a shank 38 which is passed through the hole 32 and spun over, and a shank 36 which is passed through the support 12 and spun over. The free end of the member carries an electric contact which co-operates with an insulated contact 20, carried by a plug 22 which is adjusted to vary the temperature at which the contacts open. In an alternative the bi-metallic member may be formed as in Fig. 6.
GB22404/39A 1938-08-27 1939-08-02 Improvements in or relating to thermostats Expired GB531794A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US227076A US2249837A (en) 1938-08-27 1938-08-27 Thermostat

Publications (1)

Publication Number Publication Date
GB531794A true GB531794A (en) 1941-01-10

Family

ID=22851653

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22404/39A Expired GB531794A (en) 1938-08-27 1939-08-02 Improvements in or relating to thermostats

Country Status (6)

Country Link
US (1) US2249837A (en)
BE (1) BE435491A (en)
CH (1) CH211966A (en)
FR (1) FR858201A (en)
GB (1) GB531794A (en)
NL (1) NL59346C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285927A2 (en) * 1987-04-07 1988-10-12 Hofsäss, Ulrika Thermostat
US6323256B1 (en) 1996-12-13 2001-11-27 Data Sciences International, Inc. Biocompatible medical devices with polyurethane surface

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425717A (en) * 1942-06-25 1947-08-19 F A Smith Mfg Company Thermostatic switch assembly
US2533274A (en) * 1944-11-28 1950-12-12 Fasco Industries Bimetallic thermostatic element
US2479313A (en) * 1947-07-29 1949-08-16 Gen Electric Column spring switch
US2616996A (en) * 1947-12-06 1952-11-04 Beeman Lyle Snap switch
US2669618A (en) * 1950-03-04 1954-02-16 Sessions Clock Co Snap-action device
US2684843A (en) * 1950-05-16 1954-07-27 Mason Electric Corp Snap action device
US2681962A (en) * 1951-07-02 1954-06-22 Sundt Edward Victor Combined circuit breaker and switch
DE947276C (en) * 1952-02-05 1956-08-16 Rau Fa G Thermal bimetal tape
US2712044A (en) * 1953-08-18 1955-06-28 Signal Stat Corp Circuit breaker
US2712045A (en) * 1953-08-18 1955-06-28 Signal Stat Corp Snap action vane
US3130585A (en) * 1957-04-25 1964-04-28 Sunbeam Corp Snap-acting thermostat
US3061694A (en) * 1959-05-21 1962-10-30 Hubbell Inc Harvey Leaf type snap action switch
US3037102A (en) * 1961-02-06 1962-05-29 Schmidinger Joseph Snap switch
US3130990A (en) * 1961-09-11 1964-04-28 Rohden Mfg Company Inc Knob spring
US3451270A (en) * 1966-11-14 1969-06-24 Gen Motors Corp Thermostatic vacuum valve and bimetal element therein
US4283701A (en) * 1979-04-20 1981-08-11 General Electric Company Overshoot compensated thermostat
JP4338332B2 (en) * 2001-03-02 2009-10-07 ウチヤ・サーモスタット株式会社 Thermal protector
US20050134424A1 (en) * 2003-12-19 2005-06-23 Albert Huang Bimetallic strip for a circuit breaker
DE102009061050B4 (en) 2009-06-05 2019-09-05 Marcel P. HOFSAESS Bimetal part and thus equipped temperature-dependent switch
DE102009025221A1 (en) * 2009-06-05 2010-12-16 Hofsaess, Marcel P. Bimetallic part for use as an active switch element in a temperature-dependent switch, comprises an inner area and an outer area surrounding the inner area, where the inner and outer areas are integrally designed in some sections

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285927A2 (en) * 1987-04-07 1988-10-12 Hofsäss, Ulrika Thermostat
EP0285927A3 (en) * 1987-04-07 1990-11-14 Peter Hofsass Thermostat
US6323256B1 (en) 1996-12-13 2001-11-27 Data Sciences International, Inc. Biocompatible medical devices with polyurethane surface
US6774157B2 (en) 1996-12-13 2004-08-10 Transoma Medical, Inc. Biocompatible medical devices with polyurethane surface

Also Published As

Publication number Publication date
US2249837A (en) 1941-07-22
NL59346C (en)
CH211966A (en) 1940-10-31
FR858201A (en) 1940-11-20
BE435491A (en)

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