F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
 F01 - 
F04
Subsection index
MACHINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF04C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF04B
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
ENGINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF03C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF03C
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
PUMPS
positive displacement
rotary or oscillating pistonF04C
reciprocating piston or otherF04B
non-positive displacementF04D
  
LIGHTING; HEATING
 F27
FURNACES; KILNS; OVENS; RETORTS (specially adapted for a purpose covered by a single other class and specifically mentioned in that class, see the class in question, e.g. bakery ovens A21B, glass melting furnaces C03B, coke or gas-making apparatus C10B, C10J, apparatus for cracking hydrocarbons C10G, blast furnaces C21B, converters for making steel C21C, furnaces for heat treatment of metal C21D; furnaces for electroslag or arc remelting of metals C22B 9/00; enamelling ovens C23D; combustion apparatus F23; electric heating H05B)  [4]
 F27

Note(s)

  1. This class covers:
    • furnaces, kilns, ovens, retorts, open sintering apparatus and other similar apparatus for heat treatment of materials or articles, and details or accessories therefor, in general;
    • the arrangement of electrical heating elements in or on furnaces.
  2. This class does not cover:
    • combustion apparatus per se, i.e. apparatus for direct combination of oxygen gas and a burnable substance; [7]
    • electrical heating elements per se;
    • processes carried on within the furnaces.
  3. In this class, the following term is used with the meaning indicated:
    • "furnaces" covers kilns, ovens, or retorts.
 F27D
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE (combustion apparatus F23)
 F27D

Note(s)

Attention is drawn to the references and Notes following the title of class F27 and Note (3) of section H.

 F27D
Subclass index
CONSTRUCTIONAL FEATURES 1/00
HANDLING AND SUPPORTING CHARGE 3/00, 5/00, 15/00
PREHEATING CHARGE; COOLING; USING WASTE HEAT OR GASES 13/00; 9/00, 15/00; 17/00
ARRANGEMENTS OF ELECTRIC HEATING ELEMENTS 11/00
ARRANGEMENTS OF CONTROL AND SAFETY DEVICES 19/00, 21/00
OTHER FEATURES; OTHER DETAILS 7/00; 23/00
P:60 F27D 1/00
Casings; Linings; Walls; Roofs (refractory materials C04B; firebridges for combustion chambers F23M 3/00)
 F27D 1/02
·  Crowns; Roofs
 F27D 1/04
·  characterised by the form of the bricks or blocks used
 F27D 1/10
·  Monolithic linings; Supports therefor
 F27D 1/12
·  incorporating cooling arrangements (constructions of tube assemblies in general F28)
 F27D 1/14
·  Supports for linings (F27D 1/10 takes precedence)
 F27D 1/16
·  Making or repairing linings
 F27D 1/18
·  Door frames; Doors, lids, removable covers
P:40 F27D 3/00
Charging; Discharging; Manipulation of charge (conveying systems characterised by their application for specified purposes not otherwise provided for B65G 49/00; moving charge through a furnace F27B 9/00)
 F27D 3/12
·  Travelling or movable supports or containers for the charge
 F27D 3/14
·  Charging or discharging liquid or molten material
P:50 F27D 5/00
Supports, screens, or the like for the charge within the furnace (travelling or movable supports F27D 3/12)
P:30 F27D 7/00
Forming, maintaining, or circulating atmospheres in heating chambers
P:90 F27D 9/00
Cooling of furnaces or of charges therein (F27D 1/00, F27D 3/00 take precedence)
P:70 F27D 11/00
Arrangement of elements for electric heating in or on furnaces (electric heating per se H05B)
 F27D 11/08
·  Heating by electric discharge, e.g. arc discharge
P:80 F27D 13/00
Apparatus for preheating charges; Arrangements for preheating charges
P:100 F27D 15/00
Handling or treating discharged material; Supports or receiving chambers therefor
P:20 F27D 17/00
Arrangement for using waste heat (heat-exchangers per se F28); Arrangement for using, or disposing of, waste gases (removing fumes in general B08B 15/00)
P:0 F27D 19/00
Arrangement of controlling devices
P:10 F27D 21/00
Arrangement of monitoring devices; Arrangements of safety devices
P:110 F27D 23/00
Details or accessories not covered by any other group of this subclass