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

ENGINEERING IN GENERAL

|  | F16 |
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS

|  | F16B |
DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES; JOINTS OR JOINTING (buckles, slide fasteners Fulltext... Hierarchy... Expanded...A44B; ornamental heads for nails, screws, etc. Fulltext... Hierarchy... Expanded...A47G 3/00; connections for building structures in general Fulltext... Hierarchy... Expanded...E04B 1/38; scaffolding couplings Fulltext... Hierarchy... Expanded...E04G 7/00; pipe joints Fulltext... Hierarchy... Expanded...F16L; magnetic holding devices Fulltext... Hierarchy... Expanded...H01F 7/00; electrostatic holding devices Fulltext... Hierarchy... Expanded...H02N 13/00)

|  | F16B |
Note(s) Groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16B 2/00-F16B 47/00 take precedence over group Fulltext... Hierarchy... Expanded...F16B 1/00. [2]

|  | F16C |
SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

|  | F16C |
Note(s) The phrase "Rotary bodies other than gearing elements" in the sub-class title, and the relevant groups Fulltext... Hierarchy... Expanded...F16C 13/00 and Fulltext... Hierarchy... Expanded...F16C 15/00, cover any element which rotates so far as its features are affected only by the fact that it rotates.

|  | F16D |
COUPLINGS; CLUTCHES; BRAKES (arrangements or location of clutches in vehicles Fulltext... Hierarchy... Expanded...B60K 17/00, e.g. Fulltext... Hierarchy... Expanded...B60K 17/02) [2]

|  | F16F |
SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION

|  | F16G |
BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR (endless conveyer belts Fulltext... Hierarchy... Expanded...B65G 15/30; traction chains for conveyers Fulltext... Hierarchy... Expanded...B65G 17/38, Fulltext... Hierarchy... Expanded...B65G 19/20; gearings using flexible members Fulltext... Hierarchy... Expanded...F16H; chains specially adapted for gearings with variable ratio Fulltext... Hierarchy... Expanded...F16H 9/24; preventing or carrying-off electrostatic charges Fulltext... Hierarchy... Expanded...H05F)

|  | F16H |
GEARING

|  | F16H |
Note(s) In this sub-class "Toothed gearing" includes worm gearing and other gearing involving at least one wheel or sector provided with teeth or the equivalent, except gearing with chains or toothed belts, which is treated as friction gearing. "Conveying . . . motion" includes transmitting energy, and means that the applied and resultant motions are of the same kind, though they may differ in, e.g. speed, direction, extent. "Rotary" implies that the motion may continue indefinitely. "Oscillating" means moving about an axis to an extent which is limited by the construction of the gearing and which may exceed one revolution, the movement being alternately forwards and backwards during continued operation of the gearing. "Reciprocating" means moving substantially in a straight line, the movement being alternately forwards and backwards during continued operation of the gearing. "Reversing" or "reversal" means that an applied movement in one direction may produce a resultant movement in either of two opposed directions at will. "Central gears" includes any gears whose axis is the main axis of the gearing. Sets of rigidly-connected members are regarded as single members.

|  | F16J |
PISTONS; CYLINDERS; PACKING

|  | F16K |
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING

|  | F16L |
PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES OR CABLES; MEANS FOR THERMAL INSULATION IN GENERAL (pipe systems Fulltext... Hierarchy... Expanded...F17D)

|  | F16L |
Note(s) In this sub-class, the word "pipes" is understood to include all pipes and tubes not specially adapted to purposes other than that of conveying fluids, materials, or objects. A pipe may or may not be flexible; if flexibility is essential the word "hose" is used.

|  | F16M |
FRAMES, CASINGS, OR BEDS OF ENGINES OR OTHER MACHINES OR APPARATUS, NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS OR SUPPORTS

|  | F16N |
LUBRICATING (special modifications of devices or systems for use in particular machines or apparatus, see the relevant classes for the machines or apparatus)

|  | F16P |
SAFETY DEVICES IN GENERAL (safety devices adapted to machines or apparatus for special purposes, see the relevant classes for the machines or apparatus)

|  | F16S |
CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL

|  | F16S |
Note(s) Attention is drawn to sub-class Fulltext... Hierarchy... Expanded...E04C, in which similar elements and structures, restricted to use in the building art, are to be found.

|  | F16T |
STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS