ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H 01 B 7/10; overvoltage protection resistors, resistive arresters H 01 C 7/12, H 01 C 8/04; electrolytic self-interrupters H 01 G 9/18; switching devices of the waveguide type
H 01 P; devices for interrupted current collection H 01 R 39/00; overvoltage arresters using spark gaps H 01 T 4/00; emergency protective circuit arrangements H 02 H; switching by electronic means without contact-making H 03 K 17/00)
Notes
(1)
This subclass covers (in groups H 01 H 69/00 to H 01 H 87/00) devices for the protection of electric lines or electric machines or apparatus in the event of undesired change from normal electric working conditions, the electrical condition serving directly as the input to the device.
(2)
This subclass does not cover bases, casings, or covers accommodating two or more switching devices or for accomodating a switching device as well as another electric component, e.g. bus-bar, line connector. Those bases, casings or covers are covered by group H 02 B 1/26.
(3)
In this subclass, the following terms or expressions are used with the meanings indicated:
-
"relay" means a switching device having contacts which are operated from electric inputs which supply, directly or indirectly, all the mechanical energy necessary to cause both the closure and the opening of the contacts;
-
"driving mechanism" refers to the means by which an operating force applied to the switch is transmitted to the moving contact or contacts;
-
"operating" is used in a broader sense than "actuating" which is reserved for those parts not touched by hand to effect switching;
-
"acting" or "action" means a self-induced movements of parts at one stage of the switching. These connotations apply to all parts of the verbs "to operate"; "to actuate", and "to act", and to words derived therefrom, e.g. to "actuation".
(4)
In this subclass, details are classified as follows:
-
details of an unspecified type of switching device, or disclosed as applicable to two or more kinds of switching devices designated by the terms or expressions "switches", "relays", "selector switches", and "emergency protective devices", are classified in groups H 01 H 1/00 to H 01 H 9/00;
details of an unspecified type of relay, or disclosed as applicable to two or more types of relays as defined by groups H 01 H 51/00 to H 01 H 61/00, hereinafter called basic types, are classified in group H 01 H 45/00;
-
details of an unspecified protective device, or applicable to two or more types of protective devices as defined by groups H 01 H 73/00 to
H 01 H 83/00, hereinafter called basic types, are classified in group H 01 H 71/00.
However, details only described with reference to, or clearly only applicable to, switching devices of a single basic type, are classified in the group appropriate to switching devices of that basic type, e.g. H 01 H 19/02, H 01 H 75/04;
-
mechanical structural details of control members of switches or of keyboards such as keys, push-buttons, levers or other mechanisms for transferring the force to the activated elements are classified in this subclass, even when they are used for controlling electronic switches.
However, mechanical details directly producing electronic effects are classified in group
H 03 K 17/94. [4]
Contact mounted so that its contact-making surface is flush with adjoining insulation
1
/
42
•
•
•
Knife-and-clip contacts
1
/
44
•
•
•
with resilient mounting
1
/
46
•
•
•
self-aligning contacts
1
/
48
•
•
•
with provision for adjusting position of contact relative to its co-operating contact
1
/
50
•
Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
1
/
52
•
•
Contacts adapted to act as latches
1
/
54
•
•
by magnetic force
1
/
56
•
Contact arrangements for providing make-before-break operation, e.g. for on-load tap-changing
1
/
58
•
Electric connections to or between contacts; Terminals (electric connections in general H 01 R)
1
/
60
•
Auxiliary means structurally associated with the switch for cleaning or lubricating contact-making surfaces (cleaning by normal sliding of contacts H 01 H 1/18, H 01 H 1/36)
1
/
62
•
Heating or cooling of contacts
1
/
64
•
Protective enclosures, baffle plates, or screens for contacts (for arc-extinguishing H 01 H 9/30; for mercury contacts H 01 H 29/04)
1
/
66
•
•
Contacts sealed in an evacuated or gas-filled envelope, e.g. magnetic dry-reed contacts
