GB869524A - Improvements in and relating to temperature control systems - Google Patents

Improvements in and relating to temperature control systems

Info

Publication number
GB869524A
GB869524A GB4320/58A GB432058A GB869524A GB 869524 A GB869524 A GB 869524A GB 4320/58 A GB4320/58 A GB 4320/58A GB 432058 A GB432058 A GB 432058A GB 869524 A GB869524 A GB 869524A
Authority
GB
United Kingdom
Prior art keywords
bridge
temperature
control systems
liquid
balance
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
GB4320/58A
Inventor
Cecil Annand Crafts
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.)
Robertshaw Controls Co
Original Assignee
Robertshaw Fulton Controls 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 Robertshaw Fulton Controls Co filed Critical Robertshaw Fulton Controls Co
Publication of GB869524A publication Critical patent/GB869524A/en
Expired legal-status Critical Current

Links

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
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • 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
    • G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • General Induction Heating (AREA)
  • Control Of Temperature (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)

Abstract

869,524. Automatic temperature-control systems. ROBERTSHAW-FULTON CONTROLS CO. Feb. 10, 1958 [April 29, 1957], No. 4320/58. Class 38 (4). The temperature of a heated space 12.is kept constant by the use of an annular chamber 15 containing electrically conductive material melting at the desired temperature, and the conductivity of which varies with the liquid: solid ratio of the slurry. A coil 54 would on a toroidal former is immersed in the material so that the latter forms in effect a single-turn secondary winding, the varying impedance of which is effectively reflected into the primary winds to affect the balance of a bridge circuit formed by resistors 48 and 50 and inductances 52 and 54. The bridge is arranged so that unbalance at a 1 : 1 liquid : solid ratio acting through a power amplifier 36 provides enough energy for a heater 42 to maintain the desired temperature ; a variable resistance 62 reflecting an impedance into the primary of transformer 58 provides adjustment for the bridge balance.
GB4320/58A 1957-04-29 1958-02-10 Improvements in and relating to temperature control systems Expired GB869524A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US1112661XA 1957-04-29 1957-04-29
US869524XA 1957-04-29 1957-04-29
US1202293XA 1957-04-29 1957-04-29
US655663A US2898435A (en) 1957-04-29 1957-04-29 Heating control device

Publications (1)

Publication Number Publication Date
GB869524A true GB869524A (en) 1961-05-31

Family

ID=62062745

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4320/58A Expired GB869524A (en) 1957-04-29 1958-02-10 Improvements in and relating to temperature control systems

Country Status (4)

Country Link
US (1) US2898435A (en)
DE (1) DE1112661B (en)
FR (1) FR1202293A (en)
GB (1) GB869524A (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3054881A (en) * 1957-05-07 1962-09-18 Robertshaw Fulton Controls Co Heating control device
US5624594A (en) * 1991-04-05 1997-04-29 The Boeing Company Fixed coil induction heater for thermoplastic welding
US7126096B1 (en) * 1991-04-05 2006-10-24 Th Boeing Company Resistance welding of thermoplastics in aerospace structure
US5793024A (en) * 1991-04-05 1998-08-11 The Boeing Company Bonding using induction heating
US5645744A (en) * 1991-04-05 1997-07-08 The Boeing Company Retort for achieving thermal uniformity in induction processing of organic matrix composites or metals
US5728309A (en) * 1991-04-05 1998-03-17 The Boeing Company Method for achieving thermal uniformity in induction processing of organic matrix composites or metals
US5723849A (en) * 1991-04-05 1998-03-03 The Boeing Company Reinforced susceptor for induction or resistance welding of thermoplastic composites
US5410132A (en) * 1991-10-15 1995-04-25 The Boeing Company Superplastic forming using induction heating
US5808281A (en) * 1991-04-05 1998-09-15 The Boeing Company Multilayer susceptors for achieving thermal uniformity in induction processing of organic matrix composites or metals
US5641422A (en) * 1991-04-05 1997-06-24 The Boeing Company Thermoplastic welding of organic resin composites using a fixed coil induction heater
US5500511A (en) * 1991-10-18 1996-03-19 The Boeing Company Tailored susceptors for induction welding of thermoplastic
US5508496A (en) * 1991-10-18 1996-04-16 The Boeing Company Selvaged susceptor for thermoplastic welding by induction heating
US5444220A (en) * 1991-10-18 1995-08-22 The Boeing Company Asymmetric induction work coil for thermoplastic welding
US5801359A (en) * 1994-07-08 1998-09-01 Canon Kabushiki Kaisha Temperature control that defects voltage drop across excitation coil in image heating apparatus
US5710412A (en) * 1994-09-28 1998-01-20 The Boeing Company Fluid tooling for thermoplastic welding
US5660669A (en) * 1994-12-09 1997-08-26 The Boeing Company Thermoplastic welding
US5573613A (en) * 1995-01-03 1996-11-12 Lunden; C. David Induction thermometry
US5486684A (en) * 1995-01-03 1996-01-23 The Boeing Company Multipass induction heating for thermoplastic welding
US5705795A (en) * 1995-06-06 1998-01-06 The Boeing Company Gap filling for thermoplastic welds
US6602810B1 (en) 1995-06-06 2003-08-05 The Boeing Company Method for alleviating residual tensile strain in thermoplastic welds
US5717191A (en) * 1995-06-06 1998-02-10 The Boeing Company Structural susceptor for thermoplastic welding
US5556565A (en) * 1995-06-07 1996-09-17 The Boeing Company Method for composite welding using a hybrid metal webbed composite beam
US5829716A (en) * 1995-06-07 1998-11-03 The Boeing Company Welded aerospace structure using a hybrid metal webbed composite beam
US5756973A (en) * 1995-06-07 1998-05-26 The Boeing Company Barbed susceptor for improviing pulloff strength in welded thermoplastic composite structures
US5760379A (en) * 1995-10-26 1998-06-02 The Boeing Company Monitoring the bond line temperature in thermoplastic welds
US5916469A (en) * 1996-06-06 1999-06-29 The Boeing Company Susceptor integration into reinforced thermoplastic composites
US5869814A (en) * 1996-07-29 1999-02-09 The Boeing Company Post-weld annealing of thermoplastic welds
US5902935A (en) * 1996-09-03 1999-05-11 Georgeson; Gary E. Nondestructive evaluation of composite bonds, especially thermoplastic induction welds
US6284089B1 (en) * 1997-12-23 2001-09-04 The Boeing Company Thermoplastic seam welds

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1617360A (en) * 1925-04-24 1927-02-15 Westinghouse Electric & Mfg Co Magnetic temperature-control system
US1845241A (en) * 1929-09-03 1932-02-16 Hevi Duty Electric Co Magnetic control system
US2086966A (en) * 1935-11-21 1937-07-13 Rca Corp Heat regulator
DE864764C (en) * 1942-06-26 1953-04-20 Siemens Ag thermostat
US2429819A (en) * 1944-03-28 1947-10-28 Gen Electric High-frequency heating apparatus
US2524886A (en) * 1945-11-21 1950-10-10 Collins Radio Co Temperature control of electrovibratory systems
GB668804A (en) * 1950-01-06 1952-03-19 Sangamo Weston Improvements in or relating to methods of and apparatus for maintaining a constant temperature
US2640089A (en) * 1950-01-06 1953-05-26 Weston Electrical Instr Corp Thermocouple cold-end compensator
DE815266C (en) * 1950-01-31 1951-10-01 Karl-Otto Dr-Ing Schmidt Heat equilibrium holder with organic or inorganic substances at the melting point
DE833258C (en) * 1950-09-21 1952-03-27 Dr Rer Nat Hans Hinz Thermostat with short response time
US2819371A (en) * 1954-01-19 1958-01-07 Westinghouse Electric Corp Heating apparatus

Also Published As

Publication number Publication date
FR1202293A (en) 1960-01-08
US2898435A (en) 1959-08-04
DE1112661B (en) 1961-08-10

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