MACHINES OR ENGINES FOR LIQUIDS (for liquids and elastic fluids Fulltext... Hierarchy... Expanded...F01; positive-displacement machines for liquids Fulltext... Hierarchy... Expanded...F04); WIND, SPRING, WEIGHT, OR MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
In this class, the following terms or expressions are used with the meanings indicated:
"combustion" means the direct combination of oxygen gas, e.g. in air, and a burnable substance. Any other heat-producing combination of chemical substances, e.g. hydrogen peroxide and methane, iron oxide and aluminium, is covered by section C or by subclass Fulltext... Hierarchy... Expanded...F24J;
"combustion chamber" means a chamber in which fuel is burned to establish a self-supporting fire or flame and which surrounds that fire or flame;
"burner" means a device by which fluent fuel is passed to a combustion space where it burns to produce a self-supporting flame;
"air" means a mixture of gases containing free oxygen and able to promote or support combustion.
In this class, the following expressions are used with the meanings indicated:
"heat exchange" means the heating or cooling of a fluid or fluent solid by direct or indirect contact with a heated or cooled fluid or fluent solid; alpha
"heat transfer" means the heating or cooling of a fluid or fluent solid by direct contact with a heated or cooled surface or body.
This class covers also means for practice and training which may have aspects of simulation, e.g. in apparatus for so-called "military games", although simulators are generally covered by class Fulltext... Hierarchy... Expanded...G09.
In this class, the following terms or expressions are used with the meanings indicated:
"semi-automatic firearm" means a firearm from which one shot is fired after actuation of the trigger and which then returns to a condition for firing a subsequent shot upon renewed actuation of the trigger;
"automatic gun" means a gun which will continue firing so long as the initial firing pressure is maintained on the trigger; alpha
"sighting" means bringing into visual coincidence a direction defined by a so-called "sighting" device with the direction of a target;
"aiming" means bringing a weapon to a direction differing from the sighting direction by corrections in order that the projectile may hit the target;
"laying" means setting a weapon in the correct position for hitting a mark.
Attention is drawn to the definitions of "projectile", "missile" and "rocket" given in Note (2) following the title of class Fulltext... Hierarchy... Expanded...F42. [4]
This class covers also means for practice or training which may have aspects of simulation, although simulators are generally covered by class Fulltext... Hierarchy... Expanded...G09.
In this class, the following terms or expressions are used with the meanings indicated:
"primer" effects the first explosive step in the sequence of explosion; [2]
"percussion cap" means a primer which is struck to explode; [2]
"igniter" effects the first spark-producing or heat-producing step but may not be explosive; [2]
"firing-means" or "initiator" (used respectively in the arts of weaponry and blasting) means a device acting directly on the primer, which device may or may not form part of the fuze; [2]
"detonator charge" means a charge used to amplify the explosion of the primer; [2]
"fuze" means an assembly which determines the moment of the explosion (instantaneous or delayed) and which incorporates firing-means for initiating the explosion spark; [2]
"ammunition" covers expulsion charge and projectile whether or not forming a single body, unless otherwise made clear; [2]
"projectile", "missile" or "projectile or missile" means any body which is projected or propelled; [4]
"guided missile" means projectile or missile which is guided during at least part of its trajectory; [4]
"rocket" means projectile or missile which is self-propelled, during at least part of its trajectory, by a rocket engine, i.e. by a jet-propulsion engine carrying both fuel and oxidant therefor. [4]