GB1229185A - - Google Patents
Info
- Publication number
- GB1229185A GB1229185A GB1229185DA GB1229185A GB 1229185 A GB1229185 A GB 1229185A GB 1229185D A GB1229185D A GB 1229185DA GB 1229185 A GB1229185 A GB 1229185A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- disc
- spring
- plunger
- points
- 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
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
-
- 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
- H01H37/18—Means for adjustment of "on" or "off" operating temperature by varying bias on the thermal element due to a separate spring
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Thermally Actuated Switches (AREA)
Abstract
1,229,185. Thermal switches. THERM-0- DISC Inc. 24 July, 1969 [29 Nov., 1968], No. 37286/69. Heading H1N. In a thermostat operable by a bimetallic disc 137, Fig. 7, which moves a plunger 134 engageable after lost-motion with a movable contact strip 133, the plunger 134 is held in contact with the disc by an adjustable spring 142 whereby the "temperature/disc displacement" curve on rising temperature follows curves such as 151, Fig. 8, for a minimum temperature range or 161 for the maximum temperature range. Screw 146 adjusting the spring 142 therefore causes the switch to snap upwards from points 156 to 157 (minimum setting) or from points 163-164 (maximum setting). Contact arm 133 is also loaded by a separate differential setting spring 147 with an adjusting screw 148 whereby the restoring force on the disc 137 is increased so that it snaps back on the curves 152 or 162 at points 153 or 166. The temperature differential is therefore less than that with the spring 147 removed when the system would snap back from the left-hand peaks of the curves 151 or 161. The lost motion of plunger 134 assists in breaking a contact weld and, in the example, a backing contact leaf-spring 128 lifts up from a rigid stop support 131 so that on the return movement its impact with the support 131 assists in breaking the contact weld. In modifications the plunger 134 may be elongated and mounted within an elongated body, Fig. 1 (not shown), and engages an intermediate bumper (42) of plastics material. The backing contact 128 may also be omitted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US77968068A | 1968-11-29 | 1968-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1229185A true GB1229185A (en) | 1971-04-21 |
Family
ID=25117177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1229185D Expired GB1229185A (en) | 1968-11-29 | 1969-07-24 |
Country Status (6)
Country | Link |
---|---|
US (1) | US3573700A (en) |
JP (1) | JPS5534972B1 (en) |
DE (1) | DE1959591C3 (en) |
FR (1) | FR2024460A1 (en) |
GB (1) | GB1229185A (en) |
SE (1) | SE362984B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2372421A (en) * | 2001-02-19 | 2002-08-21 | Strix Ltd | Variable temperature control for a liquid heating vessel |
CN103377851A (en) * | 2012-04-25 | 2013-10-30 | 旭程电子(深圳)有限公司 | Constant temperature protector |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2130004A1 (en) * | 1970-06-19 | 1971-12-30 | Electrovac | Thermal switch with a small switching temperature difference |
US3676817A (en) * | 1971-02-22 | 1972-07-11 | Therm O Disc Inc | Adjustable thermostat |
US3870229A (en) * | 1972-06-06 | 1975-03-11 | Robertshaw Controls Co | Thermostat construction and electrical control system utilizing the same |
US3783429A (en) * | 1972-06-21 | 1974-01-01 | Raychem Corp | Temperature actuated connector |
US3845441A (en) * | 1972-08-14 | 1974-10-29 | Therm O Disc Inc | Wide temperature range adjustable disc thermostat |
US3924213A (en) * | 1974-09-30 | 1975-12-02 | Ranco Inc | Thermostat |
US4060158A (en) * | 1976-01-28 | 1977-11-29 | Usui International Industry, Ltd. | Cooling fan control mechanism |
US4258325A (en) * | 1979-05-21 | 1981-03-24 | Therm-O-Disc, Incorporated | Thermostat and method of testing thereof |
US4365228A (en) * | 1981-04-03 | 1982-12-21 | Robertshaw Controls Company | Thermostat construction having a one piece plunger with a wing-like section and method of making the same |
AT386714B (en) * | 1983-07-07 | 1988-10-10 | Electrovac | DEVICE FOR HOT DISPLAY AND FOR CONTROLLING OR LIMITING THE TEMPERATURE OF RADIATION OR CONTACT HEATER FROM ELECTRICAL COOKING EQUIPMENT |
US4588886A (en) * | 1983-11-14 | 1986-05-13 | Thermo-O-Disc Incorporated | Fiber optics condition sensor and method of making same |
US4633211A (en) * | 1985-01-24 | 1986-12-30 | Robertshaw Controls Company | Electrical switch construction and method of making the same |
US7372356B2 (en) * | 2005-11-01 | 2008-05-13 | Homeease Industrial Co., Ltd. | Concealed adjustable temperature switch |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1845997A (en) * | 1922-06-01 | 1932-02-16 | Spencer Thermostat Co | Temperature controlled apparatus |
US2015545A (en) * | 1926-06-23 | 1935-09-24 | Westinghouse Electric & Mfg Co | Thermostatic device |
US1958594A (en) * | 1930-09-06 | 1934-05-15 | Gen Plate Co | Thermostat |
US1972832A (en) * | 1932-10-14 | 1934-09-04 | Gen Plae Company | Thermostatic control |
US2066162A (en) * | 1932-10-14 | 1936-12-29 | Gen Plate Co | Thermostatic control |
US2039358A (en) * | 1934-07-14 | 1936-05-05 | Gen Plate Co | Thermally operated valve |
US2111609A (en) * | 1935-04-10 | 1938-03-22 | Metals & Controls Corp | Thermostatically controlled heating device |
US2153297A (en) * | 1936-05-04 | 1939-04-04 | Metals & Controls Corp | Thermostatic control |
US2331408A (en) * | 1941-01-18 | 1943-10-12 | Westinghouse Electric & Mfg Co | Control apparatus |
US3355563A (en) * | 1966-08-11 | 1967-11-28 | Texas Instruments Inc | Lost motion thermostatic electrical switch |
-
1968
- 1968-11-29 US US779680A patent/US3573700A/en not_active Expired - Lifetime
-
1969
- 1969-07-24 GB GB1229185D patent/GB1229185A/en not_active Expired
- 1969-07-31 SE SE10774/69*A patent/SE362984B/xx unknown
- 1969-08-13 FR FR6927887A patent/FR2024460A1/fr not_active Withdrawn
- 1969-10-09 JP JP8038469A patent/JPS5534972B1/ja active Pending
- 1969-11-27 DE DE1959591A patent/DE1959591C3/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2372421A (en) * | 2001-02-19 | 2002-08-21 | Strix Ltd | Variable temperature control for a liquid heating vessel |
GB2372421A8 (en) * | 2001-02-19 | 2005-04-25 | Strix Ltd | Variable temperature control for a liquid heating vessel |
GB2372421B (en) * | 2001-02-19 | 2005-07-27 | Strix Ltd | Thermally sensitive controls |
CN103377851A (en) * | 2012-04-25 | 2013-10-30 | 旭程电子(深圳)有限公司 | Constant temperature protector |
CN103377851B (en) * | 2012-04-25 | 2015-09-30 | 旭程电子(深圳)有限公司 | Constant temperature protector |
Also Published As
Publication number | Publication date |
---|---|
DE1959591C3 (en) | 1974-09-26 |
DE1959591B2 (en) | 1974-03-07 |
JPS5534972B1 (en) | 1980-09-10 |
SE362984B (en) | 1973-12-27 |
FR2024460A1 (en) | 1970-08-28 |
US3573700A (en) | 1971-04-06 |
DE1959591A1 (en) | 1970-06-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |