"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.
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.
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
LUBRICATING (special modifications of devices or systems for use in particular machines or apparatus, see the relevant classes for the machines or apparatus)
SAFETY DEVICES IN GENERAL (safety devices adapted to machines or apparatus for special purposes, see the relevant classes for the machines or apparatus)
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.