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Class Information
Number: 337/36
Name: Electricity: electrothermally or thermally actuated switches > Electrothermally actuated switches > With bimetallic elements (i.e., motion takes place in a plane at right angles to its major axis)
Description: Subject matter including at least one electrothermal temperature responsive composite element consisting of two different metals, bonded together, and having different coefficients of expansion such that when heated by a thermal current a bending motion of the composite element results. The resultant motion is utilized either directly or through an intermediate mechanical means to control the opening and/or closing of an electrical circuit.










Sub-classes under this class:

Class Number Class Name Patents
337/85 Bimetallic element unitary with or directly actuates movable contact means 66
337/111 Bimetallic structure or composition of material 36
337/109 Contact composition or structure 3
337/112 Housing, casing or support means 72
337/110 With arc-suppression or blowout means 7
337/98 With contact operation inhibiting means (e.g., meltable or magnetic) 1
337/102 With external or auxiliary heating means 101
337/37 With manual or other mechanical contact controlling means 62
337/97 With switch structure protective means 12
337/99 With voltage or ambient temperature compensation means 12


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8576042 Miniature circuit breaker Nov. 5, 2013
8487508 Method and system for monitoring environmental conditions while ignoring irrelevant ranges Jul. 16, 2013
8232858 Microelectromechanical (MEM) thermal actuator Jul. 31, 2012
8198974 Flexible electrostatic actuator Jun. 12, 2012
8188831 Thermal overload relay May. 29, 2012
8154378 Thermal actuator for a MEMS-based relay switch Apr. 10, 2012
8138879 Thermal overload relay Mar. 20, 2012
8111523 Wiring board with switching function and method of manufacturing the same Feb. 7, 2012
8093984 Installation switchgear Jan. 10, 2012
8026785 Switching device Sep. 27, 2011
7948351 Circuit protection device having warning function May. 24, 2011
7887907 Thermally movable plastic devices Feb. 15, 2011
7876192 Thermal and/or magnetic overload trip Jan. 25, 2011
7821376 Method for adjusting trip sensitivity of thermal overload protection apparatus Oct. 26, 2010
7808361 Dual protection device for circuit Oct. 5, 2010
7800477 Thermal protector Sep. 21, 2010
7791448 Dual protection device for circuit Sep. 7, 2010
7750788 Dual protection device for circuit Jul. 6, 2010
7737816 Dual protection device for circuit Jun. 15, 2010
7714692 Thermal overload trip apparatus and method for adjusting trip sensitivity thereof May. 11, 2010
7619346 Method and system for monitoring environmental conditions Nov. 17, 2009
7545251 Micro-electromechanical actuator Jun. 9, 2009
7518482 Trip unit having a plurality of stacked bimetal elements Apr. 14, 2009
7508294 Doubly-anchored thermal actuator having varying flexural rigidity Mar. 24, 2009
7501926 Heat sensing electrical receptacle Mar. 10, 2009
7489228 Low power consumption bistable microswitch Feb. 10, 2009
7489227 Electrical receptacle with multiple heat sensors Feb. 10, 2009
7446643 Resetable over-current and/or over-temperature protection system Nov. 4, 2008
7385473 One-shot heat sensing electrical receptacle Jun. 10, 2008
7345568 Dual protection device for circuits Mar. 18, 2008
7345569 Temperature sensitive protection device for circuits Mar. 18, 2008
7283030 Doubly-anchored thermal actuator having varying flexural rigidity Oct. 16, 2007
7239064 Resettable latching MEMS temperature sensor apparatus and method Jul. 3, 2007
7232971 Circuit breaker Jun. 19, 2007
7142087 Micromechanical latching switch Nov. 28, 2006
7112362 Thermally movable plastic devices and toys Sep. 26, 2006
7059035 Method for forming a bimetallic actuator Jun. 13, 2006
6911891 Bistable actuation techniques, mechanisms, and applications Jun. 28, 2005
6882264 Electrothermal self-latching MEMS switch and method Apr. 19, 2005
6836205 Thermal switch containing resistance temperature detector Dec. 28, 2004
6794964 Bi-stable microswitch including magnetic latch Sep. 21, 2004
6771158 Micro electromechanical differential actuator Aug. 3, 2004
6768412 Snap action thermal switch Jul. 27, 2004
6762668 Laser adjusted set-point of bimetallic thermal disc Jul. 13, 2004
6714116 Circuit breaker switch Mar. 30, 2004
6674033 Press button type safety switch Jan. 6, 2004
6580351 Laser adjusted set-point of bimetallic thermal disc Jun. 17, 2003
6559752 Creepless snap acting bimetallic switch having flexible contact members May. 6, 2003
6552643 Structure of a depress-type safety switch Apr. 22, 2003
6552645 Bimetallic actuator for electronic components and other devices Apr. 22, 2003

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