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IPC 7
  H01H 23/00 - H01H 33/99  
H01H03500-H01H04514
  H01H 47/00 - H01H 51/36  

SECTION H – ELECTRICITY


H 01BASIC ELECTRIC ELEMENTS


H 01 HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B 7/10; overvoltage protection resistors, resistive arresters H01C 7/12, H01C 8/04; electrolytic self-interrupters H01G 9/18; switching devices of the waveguide type H01P; devices for interrupted current collection H01R 39/00; overvoltage arresters using spark gaps H01T 4/00; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K 17/00)


35/

00Switches operated by change of a physical condition (operated by change of magnetic or electric field H01H 36/00; thermally-actuated switches H01H 37/00; time switches H01H 43/00; relays H01H 45/00 to H01H 61/00; sensing elements for providing continuous conversion of a variable into mechanical displacement G01)

Note

 A switching device is classified according to that physical condition which when changed acts as input to the device, e.g. external explosion causing pressure wave to act upon switch is classified in group H01H 35/24, an explosion produced within the switch in group H01H 37/00 if initiated by heat, in group H01H 39/00 if initiated electrically, and in group H01H 35/14 if initiated by an external blow.

35/

02.Switches operated by change of position, inclination, or orientation of the switch itself in relation to gravitational field (tilting mercury container H01H 29/20; change of position due to change of liquid level H01H 35/18)

35/

06.Switches operated by change of speed (operated by change of fluid flow H01H 35/24)

35/

10..Centrifugal switches (level of mercury displaced by centrifugal action H01H 29/26)

35/

12..operated by reversal of direction of movement

35/

14.Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch

35/

18.Switches operated by change of liquid level or of liquid density, e.g. float switch (wherein the liquid constitutes a contact of the switch H01H 29/00; by magnet carried on a float H01H 36/02)

35/

24.Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow (wherein the change of pressure is caused by change of temperature H01H 37/36)

35/

26..Details

35/

28...Compensation for variation of ambient pressure or temperature

35/

30...Means for transmitting pressure to pressure-responsive operating part, e.g. by capsule and capillary tube

35/

32..actuated by bellows

35/

34..actuated by diaphragm

35/

36..actuated by curled flexible tube, e.g. Bourdon tube

35/

38..actuated by piston and cylinder

35/

40..actuated by devices allowing continual flow of fluid, e.g. vane

35/

42.Switches operated by change of humidity


36/

00Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding

36/

02.actuated by movement of a float carrying a magnet


37/

00Thermally-actuated switches (electrothermal relays operated by electrical input H01H 61/00; protective switches with electrothermal release or actuation H01H 73/00 to H01H 83/00)

37/

02.Details

37/

04..Bases; Housings; Mountings

37/

06...to facilitate replacement, e.g. cartridge housing

37/

08..Indicators; Distinguishing marks

37/

10..Compensation for variation of ambient temperature or pressure

37/

12..Means for adjustment of "on" or "off" operating temperature

37/

14...by anticipatory electric heater

37/

16...by varying the proportion of input heat received by the thermal element, e.g. by displacement of a shield

37/

18...by varying bias on the thermal element due to a separate spring

37/

20...by varying the position of the thermal element in relation to switch base or casing

37/

22...by adjustment of a member transmitting motion from the thermal element to contacts or latch

37/

24...by adjustment of position of the movable contact on its driving member

37/

26...by adjustment of abutment for "off" position of the movable contact

37/

28...by adjustment of the position of the fixed contact

37/

30...by varying the position of the contact unit in relation to switch base or casing

37/

32..Thermally-sensitive members (temperature-responsive elements in general G01K)

37/

34...Means for transmitting heat thereto, e.g. capsule remote from contact member

37/

36...actuated due to expansion or contraction of a fluid with or without vaporisation (the fluid forming a contact of the switch H01H 29/04, H01H 29/30)

37/

38....with bellows

37/

40....with diaphragm

37/

42....with curled flexible tube, e.g. Bourdon tube

37/

44....with piston and cylinder

37/

46...actuated due to expansion or contraction of a solid (deflection of a bimetallic element H01H 37/52)

37/

48....with extensible rigid rods or tubes

37/

50....with extensible wires under tension

37/

52...actuated due to deflection of bimetallic element

37/

54....wherein the bimetallic element is inherently snap acting

37/

56....having spirally wound or helically wound bimetallic element

37/

58...actuated due to thermally controlled change of magnetic permeability

37/

60..Means for producing snap action (inherent in bimetallic element H01H 37/54; caused by a magnet H01H 37/66)

37/

62..Means other than thermal means for introducing a predetermined time delay

37/

64..Contacts

37/

66...Magnetic reinforcement of contact pressure; Magnet causing snap action

37/

68...sealed in evacuated or gas-filled tube

37/

70...Resetting means

37/

72.Switches in which the opening movement and the closing movement of a contact are effected respectively by heating and cooling or vice versa

37/

74.Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling (for the electrical protection of electric lines or electric apparatus H01H 73/00 to H01H 83/00)

37/

76..Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material (fuses H01H 85/00)


39/

00Switching devices actuated by an explosion produced within the device and initiated by an electric current


41/

00Switches providing a selected number of consecutive operations of the contacts by a single manual actuation of the operating part (for telephone communication H04M 1/26)

41/

04.Switches without means for setting or mechanically storing a multidigit number

41/

06..dial or slide operated

41/

08..keyboard operated

41/

10.Switches with means for setting or mechanically storing a multidigit number

41/

12..dial or slide operated

41/

14..keyboard operated


43/

00Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operation after the programme is completed (clocks with attached or built-in means operating any device at preselected times or after preselected time intervals G04C 23/00)

43/

02.Details

43/

04..Means for time setting

43/

06...comprising separately adjustable parts for each programme step, e.g. with tappets

43/

08...comprising an interchangeable programme part which is common for all programme steps, e.g. with a punched card

43/

10.with timing of actuation of contacts due to a part rotating at substantially constant speed

43/

12..stopping automatically after a single cycle of operation

43/

14...wherein repetition of operation necessitates resetting of time intervals

43/

16..stopping automatically after a predetermined plurality of cycles of operation

43/

24.with timing of actuation of contacts due to a non-rotatably moving part

43/

26..the actuation being produced by a substance flowing due to gravity, e.g. sand, water

43/

28..the actuation being produced by a part, the speed of which is controlled by fluid-pressure means, e.g. by piston and cylinder

43/

30.with timing of actuation of contacts due to thermal action

43/

32.with timing of actuation of contacts due to electrolytic processes; with timing of actuation of contacts due to chemical processes


Relays


45/

00Details of relays (electric circuit arrangements H01H 47/00; of electromagnetic relays H01H 50/00; details of electrically-operated selector switches H01H 63/00)

45/

02.Bases; Casings; Covers (frames for mounting two or more relays or for mounting a relay and another electric component H02B 1/01, H04Q 1/08, H05K)

45/

04..Mounting complete relay or separate parts of relay on a base or inside a case

45/

06..having windows; Transparent cases or covers

45/

08.Indicators; Distinguishing marks

45/

10.Electromagnetic or electrostatic shielding (casings H01H 45/02)

45/

12.Ventilating; Cooling; Heating (for operating electrothermal relays H01H 61/013)

45/

14.Terminal arrangements

  H01H 23/00 - H01H 33/99    H01H 47/00 - H01H 51/36  
 

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