|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

ENGINES AND PUMPS

|  | F02 |
COMBUSTION ENGINES (cyclically operating valves therefor, lubricating, exhausting, or silencing engines Fulltext... Hierarchy... Expanded...F01); HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

|  | F02N |
STARTING OF COMBUSTION ENGINES (starting of free-piston combustion-engines Fulltext... Hierarchy... Expanded...F02B 71/02; starting of gas-turbine plants Fulltext... Hierarchy... Expanded...F02C 7/26); STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR

|  | F02N |
Note(s) Attention is drawn to the notes preceding class Fulltext... Hierarchy... Expanded...F01. The starting of engines which are not explicitly stated to be combustion engines is classified in this sub-class in so far as their starting is equivalent to that of combustion engines.

|  | F02N 1/00 - F02N 3/00 |
Muscle-operated starting apparatus (with intermediate power storage Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F02N 5/00-F02N 15/00)

|  | F02N 1/00 |
Starting apparatus having hand cranks

|  | F02N 1/02 |
· | having safety means preventing damage caused by reverse rotation

|  | F02N 3/00 |
Other muscle-operated starting apparatus

|  | F02N 3/02 |
· | having pull-cords

|  | F02N 3/04 |
· | having foot-actuated levers

|  | F02N 5/00 - F02N 15/00 |
Power-operated starting apparatus; Muscle-operated starting apparatus with intermediate power storage

|  | F02N 5/00 |
Starting apparatus having mechanical power storage

|  | F02N 5/02 |
· | of spring type

|  | F02N 5/04 |
· | of inertia type

|  | F02N 7/00 |
Starting apparatus having fluid-driven auxiliary engines or apparatus

|  | F02N 7/02 |
· | the apparatus being of single-stroke piston type, e.g. pistons acting on racks or pull-cords

|  | F02N 7/04 |
· · | the pistons acting on screw-threaded members to effect rotation

|  | F02N 7/06 |
· | the engines being of reciprocating-piston type (of internal-combustion type Fulltext... Hierarchy... Expanded...F02N 7/10)

|  | F02N 7/08 |
· | the engines being of rotary type

|  | F02N 7/10 |
· | characterised by using auxiliary engines or apparatus of combustion type (by using explosive cartridges Fulltext... Hierarchy... Expanded...F02N 13/00)

|  | F02N 7/12 |
· · | the engines being of rotary type, e.g. turbines (Fulltext... Hierarchy... Expanded...F02N 7/14 takes precedence)

|  | F02N 7/14 |
· · | the starting engines being readily removable from main engines, e.g. of portable type

|  | F02N 9/00 |
Starting of engines by supplying auxiliary pressure fluid to their working chambers

|  | F02N 9/02 |
· | the pressure fluid being generated directly by combustion (by using explosive cartridges Fulltext... Hierarchy... Expanded...F02N 13/00)

|  | F02N 9/04 |
· | the pressure fluid being generated otherwise, e.g. by compressing air

|  | F02N 11/00 |
Starting of engines by means of electric motors (electric motors per se Fulltext... Hierarchy... Expanded...H02)

|  | F02N 11/02 |
· | the motors having longitudinally-shiftable rotors

|  | F02N 11/04 |
· | the motors being associated with current generators

|  | F02N 11/06 |
· · | and with ignition apparatus

|  | F02N 11/08 |
· | Circuits specially adapted for starting of engines

|  | F02N 11/10 |
· | Safety devices (Fulltext... Hierarchy... Expanded...F02N 11/08 takes precedence)

|  | F02N 11/12 |
· | Starting of engines by means of mobile, e.g. portable, starting sets

|  | F02N 11/14 |
· | Starting of engines by means of electric starters with external current supply (Fulltext... Hierarchy... Expanded...F02N 11/12 takes precedence)

|  | F02N 13/00 |
Starting of engines, or driving of starting apparatus by use of explosives, e.g. stored in cartridges

|  | F02N 13/02 |
· | Cartridges specially adapted therefor (gas cartridges in general Fulltext... Hierarchy... Expanded...F42B 3/04)

|  | F02N 15/00 |
Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from, groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F02N 5/00-F02N 13/00

|  | F02N 15/02 |
· | Gearing between starting engines and started engines; Engagement or disengagement thereof

|  | F02N 15/04 |
· · | the gearing including disengaging toothed gears

|  | F02N 15/06 |
· · · | the toothed gears being moved by axial displacement

|  | F02N 15/08 |
· · | the gearing being of friction type

|  | F02N 15/10 |
· | Safety devices not otherwise provided for

|  | F02N 17/00 |
Other starting means; Starting aids not otherwise provided for

|  | F02N 17/02 |
· | Aiding engine start by thermal means, e.g. using lighted wicks (using electrically-heated glowing plugs Fulltext... Hierarchy... Expanded...F02P 19/02)

|  | F02N 17/04 |
· · | by heating of fluids used in engines (heating of lubricants Fulltext... Hierarchy... Expanded...F01M 5/02)

|  | F02N 17/06 |
· · · | by heating of engine coolants

|  | F02N 17/08 |
· | Aiding engine start by other than thermal means