|  | 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; THERMAL INSULATION IN GENERAL

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

|  | F16F |
2. Note(s) This subclass covers: springs, shock-absorbers or vibration-dampers; their arrangement in, or adaptation for, particular apparatus, if not provided for in the subclasses covering said apparatus. [5] This subclass does not cover the arrangement or adaptation of springs, shock-absorbers or vibration-dampers in, or for, particular apparatus, if provided for in the subclasses concerning the said apparatus, e.g.
   Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...A47C 23/00-A47C 27/00 | Spring mattresses |
   Fulltext... Hierarchy... Expanded...A63C 5/075 | Vibration dampers in skis |
   Fulltext... Hierarchy... Expanded...B60G | Vehicle suspensions |
   Fulltext... Hierarchy... Expanded...B60R 19/24 | Mounting of bumpers on vehicles |
   Fulltext... Hierarchy... Expanded...B61F | Rail vehicle suspensions |
   Fulltext... Hierarchy... Expanded...B61G 11/00 | Buffers for railway or tramway vehicles |
   Fulltext... Hierarchy... Expanded...B62D 21/15 | Vehicle chassis frames having impact absorbing means |
   Fulltext... Hierarchy... Expanded...B62J 1/02 | Resiliently mounted saddles on cycles |
   Fulltext... Hierarchy... Expanded...B62K 21/08 | Steering dampers |
   Fulltext... Hierarchy... Expanded...B63H 1/15 | Marine propellers having vibration-damping means |
   Fulltext... Hierarchy... Expanded...B63H 21/30 | Anti-vibration mounting of marine propulsion plant in ships |
   Fulltext... Hierarchy... Expanded...B64C 25/58 | Arrangement of shock-absorbers or springs in aeroplane alighting gear |
   Fulltext... Hierarchy... Expanded...B65D 81/02 | Containers, packing elements or packages with shock-absorbing means |
   Fulltext... Hierarchy... Expanded...D06F 37/20 | Resilient mountings in washing machines |
   Fulltext... Hierarchy... Expanded...D06F 49/06 | Resilient mountings in domestic spin-dryers |
   Fulltext... Hierarchy... Expanded...F03G 1/00 | Spring motors |
   Fulltext... Hierarchy... Expanded...F21V 15/04 | Resilient mounting of lighting devices |
   Fulltext... Hierarchy... Expanded...F41A 25/00 | Gun cradles to permit recoil |
   Fulltext... Hierarchy... Expanded...F41B 5/20 | Vibration dampers for archery bows |
   Fulltext... Hierarchy... Expanded...G01D 11/00 | Indicating or recording in connection with measuring |
   Fulltext... Hierarchy... Expanded...G01G 21/10 | Weighing apparatus, e.g. arrangement of shock-absorbers in weighing apparatus |
   Fulltext... Hierarchy... Expanded...G04B | Clocks, watches |
   Fulltext... Hierarchy... Expanded...G12B 3/08 | Damping of movements in instruments |
   Fulltext... Hierarchy... Expanded...G21C 7/20 | Disposition of shock-absorbing devices for displacable control elements in nuclear reactors. |

|  | F16F |
Subclass index
SPRINGS |
Friction type; fluid type; magnetic type | 1/00, 3/00; 5/00, 9/00; 6/00
VIBRATION-DAMPERS OR SHOCK-ABSORBERS |
Friction type; fluid type | 7/00, 11/00; 9/00, 11/00
UNITS COMBINING SPRINGS AND VIBRATION-DAMPERS OR SHOCK-ABSORBERS | 13/00
SUPPRESSION OF VIBRATION, BALANCING | 15/00

|  | F16F 1/00 |
Springs (working with fluid Fulltext... Hierarchy... Expanded...F16F 5/00, Fulltext... Hierarchy... Expanded...F16F 9/00)

|  | F16F 1/02 |
· | made of steel or other material having low internal friction (Fulltext... Hierarchy... Expanded...F16F 1/36 takes precedence); Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant [6]

|  | F16F 1/04 |
· · | Wound springs

|  | F16F 1/06 |
· · · | with turns lying in cylindrical surfaces

|  | F16F 1/08 |
· · · | with turns lying in mainly conical surfaces

|  | F16F 1/10 |
· · · | Spiral springs with turns lying substantially in plane surfaces

|  | F16F 1/12 |
· · · | Attachments or mountings

|  | F16F 1/13 |
· · · · | comprising inserts or spacers between the windings for changing the mechanical or physical characteristics of the spring [6]

|  | F16F 1/14 |
· · | Torsion springs consisting of bars or tubes

|  | F16F 1/16 |
· · · | Attachments or mountings

|  | F16F 1/18 |
· · | Leaf springs

|  | F16F 1/20 |
· · · | with layers, e.g. anti-friction layers, or with rollers between the leaves

|  | F16F 1/22 |
· · · | with means for modifying the spring characteristic

|  | F16F 1/24 |
· · · | Lubrication; Covers, e.g. for retaining lubricant

|  | F16F 1/26 |
· · · | Attachments or mountings (Fulltext... Hierarchy... Expanded...B60G 11/10 takes precedence) [5]

|  | F16F 1/28 |
· · · · | comprising cylindrical metal pins pivoted in close-fitting sleeves

|  | F16F 1/30 |
· · · · | comprising intermediate pieces made of rubber or similar elastic material

|  | F16F 1/32 |
· · | Cup springs; Dished disc springs (diaphragms Fulltext... Hierarchy... Expanded...F16J 3/00)

|  | F16F 1/34 |
· · | Ring springs, i.e. annular bodies deformed radially due to axial load

|  | F16F 1/36 |
· | made of plastics, e.g. rubber; made of material having high internal friction

|  | F16F 1/362 |
· · | made of steel wool or compressed hair [6]

|  | F16F 1/364 |
· · | made of cork, wood or the like material [6]

|  | F16F 1/366 |
· · | made of fibre reinforced plastics [6]

|  | F16F 1/368 |
· · · | Leaf springs [6]

|  | F16F 1/37 |
· · | of foam-like material, e.g. sponge rubber

|  | F16F 1/371 |
· · | characterised by inserts or auxiliary extension elements, e.g. for rigidification (Fulltext... Hierarchy... Expanded...F16F 1/366, Fulltext... Hierarchy... Expanded...F16F 1/387 take precedence) [6]

|  | F16F 1/373 |
· · | characterised by having a particular shape [6]

|  | F16F 1/374 |
· · · | having a spherical or the like shape [6]

|  | F16F 1/376 |
· · · | having projections, studs, serrations or the like on at least one surface (Fulltext... Hierarchy... Expanded...F16F 1/387 takes precedence) [6]

|  | F16F 1/377 |
· · · | having holes or openings (Fulltext... Hierarchy... Expanded...F16F 1/387 takes precedence) [6]

|  | F16F 1/379 |
· · | characterised by arrangements for regulating the spring temperature, e.g. by cooling [6]

|  | F16F 1/38 |
· · | with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin

|  | F16F 1/387 |
· · · | comprising means for modifying the rigidity in particular directions [6]

|  | F16F 1/393 |
· · · | with spherical or conical sleeves [6]

|  | F16F 1/40 |
· · | consisting of a stack of similar elements separated by non-elastic intermediate layers

|  | F16F 1/41 |
· · · | the spring consisting of generally conically arranged elements [6]

|  | F16F 1/42 |
· · | characterised by the mode of stressing

|  | F16F 1/44 |
· · · | loaded mainly in compression

|  | F16F 1/46 |
· · · | loaded mainly in tension

|  | F16F 1/48 |
· · · | loaded mainly in torsion

|  | F16F 1/50 |
· · · | loaded mainly in shear

|  | F16F 1/52 |
· · · | loaded in combined stresses

|  | F16F 1/54 |
· · · · | loaded in compression and shear

|  | F16F 3/00 |
Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic (including fluid springs Fulltext... Hierarchy... Expanded...F16F 5/00, Fulltext... Hierarchy... Expanded...F16F 13/00)

|  | F16F 3/02 |
· | with springs made of steel or of other material having low internal friction

|  | F16F 3/04 |
· · | composed only of wound springs

|  | F16F 3/06 |
· · · | of which some are placed around others in such a way that they damp each other by mutual friction

|  | F16F 3/07 |
· · | combined with chambers filled with gas or liquid

|  | F16F 3/08 |
· | with springs made of a material having high internal friction, e.g. rubber

|  | F16F 3/087 |
· · | Units comprising several springs made of plastics or the like material (Fulltext... Hierarchy... Expanded...F16F 1/40 takes precedence) [6]

|  | F16F 3/093 |
· · · | the springs being of different materials, e.g. having different types of rubber [6]

|  | F16F 3/10 |
· · | combined with springs made of steel or other material having low internal friction

|  | F16F 3/12 |
· · · | the steel spring being in contact with the rubber spring, e.g. being embedded in it [6]

|  | F16F 5/00 |
Liquid springs in which the liquid works as a spring by compression, e.g. combined with throttling action; Combinations of devices including liquid springs

|  | F16F 6/00 |
Magnetic springs; Fluid magnetic springs

|  | F16F 7/00 |
Vibration-dampers; Shock-absorbers (using fluid Fulltext... Hierarchy... Expanded...F16F 5/00, Fulltext... Hierarchy... Expanded...F16F 9/00; specific for rotary systems Fulltext... Hierarchy... Expanded...F16F 15/10)

|  | F16F 7/01 |
· | using friction between loose particles, e.g. sand [6]

|  | F16F 7/02 |
· | with relatively-rotatable friction surfaces that are pressed together (Fulltext... Hierarchy... Expanded...F16F 7/01 takes precedence; one of the members being a spring Fulltext... Hierarchy... Expanded...F16F 13/02) [6]

|  | F16F 7/04 |
· · | in the direction of the axis of rotation

|  | F16F 7/06 |
· · | in a direction perpendicular or inclined to the axis of rotation

|  | F16F 7/08 |
· | with friction surfaces rectilinearly movable along each other (Fulltext... Hierarchy... Expanded...F16F 7/01 takes precedence) [6]

|  | F16F 7/09 |
· · | in dampers of the cylinder-and-piston type [6]

|  | F16F 7/10 |
· | using inertia effect

|  | F16F 7/104 |
· · | the inertia member being resiliently mounted [6]

|  | F16F 7/108 |
· · · | on plastics springs [6]

|  | F16F 7/112 |
· · · | on fluid springs [6]

|  | F16F 7/116 |
· · · | on metal springs [6]

|  | F16F 7/12 |
· | using plastic deformation of members

|  | F16F 7/14 |
· | of cable-support type, i.e. frictionally-engaged loop-forming cables

|  | F16F 9/00 |
Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium (Fulltext... Hierarchy... Expanded...F16F 5/00 takes precedence; connection of valves to inflatable elastic bodies Fulltext... Hierarchy... Expanded...B60C 29/00; door-operating appliances with fluid braking systems Fulltext... Hierarchy... Expanded...E05F)

|  | F16F 9/02 |
· | using gas only

|  | F16F 9/04 |
· · | in a chamber with a flexible wall

|  | F16F 9/05 |
· · · | the flexible wall being of the rolling diaphragm type [5]

|  | F16F 9/06 |
· | using both gas and liquid

|  | F16F 9/08 |
· · | in a chamber with a flexible wall

|  | F16F 9/084 |
· · · | comprising a gas spring contained within a flexible wall, the wall not being in contact with the damping fluid, i.e. mounted externally on the damper cylinder [6]

|  | F16F 9/088 |
· · · | comprising a gas spring with a flexible wall provided within the cylinder on the piston rod of a monotubular damper or within the inner tube of a bitubular damper [6]

|  | F16F 9/092 |
· · · | comprising a gas spring with a flexible wall provided between the tubes of a bitubular damper [6]

|  | F16F 9/096 |
· · · | comprising a hydropneumatic accumulator of the membrane type provided on the upper or the lower end of a damper or separately from or laterally on the damper [6]

|  | F16F 9/10 |
· | using liquid only; using a fluid of which the nature is immaterial

|  | F16F 9/12 |
· · | Devices with one or more rotary vanes turning in the fluid, any throttling effect being immaterial

|  | F16F 9/14 |
· · | Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect

|  | F16F 9/16 |
· · · | involving only straight-line movement of the effective parts

|  | F16F 9/18 |
· · · · | with a closed cylinder and a piston separating two or more working spaces therein

|  | F16F 9/19 |
· · · · · | with a single cylinder

|  | F16F 9/20 |
· · · · · | with the piston-rod extending through both ends of the cylinder

|  | F16F 9/22 |
· · · · | with one or more cylinders, each having a single working space closed by a piston or plunger

|  | F16F 9/24 |
· · · · · | with a single cylinder and a single piston or plunger

|  | F16F 9/26 |
· · · · · | with two cylinders in line and with the two pistons or plungers connected together

|  | F16F 9/28 |
· · · · · | with two parallel cylinders and with the two pistons or plungers connected together

|  | F16F 9/30 |
· | with solid or semi-solid material, e.g. pasty masses, as damping medium

|  | F16F 9/32 |
· | Details

|  | F16F 9/34 |
· · | Special valve constructions (valves in general Fulltext... Hierarchy... Expanded...F16K); Shape or construction of throttling passages

|  | F16F 9/342 |
· · · | Throttling passages operating with metering pins

|  | F16F 9/344 |
· · · | Vortex flow passages [6]

|  | F16F 9/346 |
· · · | Throttling passages in the form of slots arranged in cylinder walls

|  | F16F 9/348 |
· · · | Throttling passages in the form of annular discs operating in opposite directions

|  | F16F 9/36 |
· · | Special sealings, including sealings or guides for piston-rods (sealing of moving parts in general Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16J 15/16-F16J 15/56)

|  | F16F 9/38 |
· · | Covers for protection or appearance

|  | F16F 9/40 |
· · | Arrangements for preventing froth

|  | F16F 9/42 |
· · | Cooling arrangements

|  | F16F 9/43 |
· · | Filling arrangements, e.g. for supply of gas

|  | F16F 9/44 |
· · | Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction (Fulltext... Hierarchy... Expanded...F16F 9/53, Fulltext... Hierarchy... Expanded...F16F 9/56 take precedence; temperature correction only Fulltext... Hierarchy... Expanded...F16F 9/52) [5,6]

|  | F16F 9/46 |
· · · | allowing control from a distance

|  | F16F 9/48 |
· · | Arrangements for providing different damping effects at different parts of the stroke (Fulltext... Hierarchy... Expanded...F16F 9/53, Fulltext... Hierarchy... Expanded...F16F 9/56 take precedence) [5,6]

|  | F16F 9/49 |
· · · | Stops limiting fluid passage, e.g. hydraulic stops

|  | F16F 9/50 |
· · | Special means providing automatic damping adjustment (Fulltext... Hierarchy... Expanded...F16F 9/53, Fulltext... Hierarchy... Expanded...F16F 9/56 take precedence) [5,6]

|  | F16F 9/504 |
· · · | Inertia-sensitive means [6]

|  | F16F 9/508 |
· · · | Means responsive to the velocity of movement of the piston [6]

|  | F16F 9/512 |
· · · | Means responsive to load action on the damper or fluid pressure in the damper [6]

|  | F16F 9/516 |
· · · | resulting in the damping effects during contraction being different from the damping effects during extension [6]

|  | F16F 9/52 |
· · · | in case of change of temperature (combined with external adjustment Fulltext... Hierarchy... Expanded...F16F 9/44)

|  | F16F 9/53 |
· · | Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically [5]

|  | F16F 9/54 |
· · | Arrangements for attachment

|  | F16F 9/56 |
· · | Means for adjusting the length of, or for locking, the spring or damper, e.g. at the end of the stroke [6]

|  | F16F 9/58 |
· · | Stroke limiting stops, e.g. arranged on the piston rod outside the cylinder (Fulltext... Hierarchy... Expanded...F16F 9/49 takes precedence) [6]

|  | F16F 11/00 |
Vibration-dampers or shock-absorbers working with both friction and a damping fluid

|  | F16F 13/00 |
Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs (Fulltext... Hierarchy... Expanded...F16F 5/00 takes precedence)

|  | F16F 13/02 |
· | damping by frictional contact between the spring and braking means (frictionally coacting wound springs Fulltext... Hierarchy... Expanded...F16F 3/06)

|  | F16F 13/04 |
· | comprising both a plastics spring and a damper, e.g. a friction damper [6]

|  | F16F 13/06 |
· · | the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper (Fulltext... Hierarchy... Expanded...F16F 13/26 takes precedence) [6]

|  | F16F 13/08 |
· · · | the plastics spring forming at least a part of the wall of the fluid chamber of the damper (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16F 13/20-F16F 13/24 take precedence) [6]

|  | F16F 13/10 |
· · · · | the wall being at least in part formed by a flexible membrane or the like (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16F 13/12-F16F 13/18 take precedence) [6]

|  | F16F 13/12 |
· · · · | Single chamber dampers (Fulltext... Hierarchy... Expanded...F16F 13/14 takes precedence) [6]

|  | F16F 13/14 |
· · · · | Units of the bushing type [6]

|  | F16F 13/16 |
· · · · · | specially adapted for receiving axial loads [6]

|  | F16F 13/18 |
· · · · | characterised by the location or the shape of the equilibration chamber, e.g. the equilibration chamber surrounding the plastics spring or being annular (Fulltext... Hierarchy... Expanded...F16F 13/14 takes precedence) [6]

|  | F16F 13/20 |
· · · | characterised by comprising also a pneumatic spring (Fulltext... Hierarchy... Expanded...F16F 13/22 takes precedence) [6]

|  | F16F 13/22 |
· · · | characterised by comprising also a dynamic damper (dampers using inertia effect per se Fulltext... Hierarchy... Expanded...F16F 7/10) [6]

|  | F16F 13/24 |
· · · | the central part of the unit being supported by one element and both extremities of the unit being supported by a single other element, i.e. double acting mounting [6]

|  | F16F 13/26 |
· · | characterised by adjusting or regulating devices responsive to exterior conditions [6]

|  | F16F 13/28 |
· · · | specially adapted for units of the bushing type (Fulltext... Hierarchy... Expanded...F16F 13/30 takes precedence) [6]

|  | F16F 13/30 |
· · · | comprising means for varying fluid viscosity, e.g. of magnetic or electrorheological fluids [6]

|  | F16F 15/00 - F16F 15/00 |
Note(s) In this group, it is desirable to add the indexing codes of groups Fulltext... Hierarchy... Expanded...F16F 101/00 or Fulltext... Hierarchy... Expanded...F16F 103/00. The indexing codes should be unlinked. [6]

|  | F16F 15/00 |
Suppression of vibrations in systems (vehicle seat suspension devices Fulltext... Hierarchy... Expanded...B60N 2/50); Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion (testing static or dynamic balance of machines or structures Fulltext... Hierarchy... Expanded...G01M 1/00)

|  | F16F 15/02 |
· | Suppression of vibrations of non-rotating, e.g. reciprocating, systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating system (layered products Fulltext... Hierarchy... Expanded...B32B; suppression of vibration in ships Fulltext... Hierarchy... Expanded...B63)

|  | F16F 15/023 |
· · | using fluid means [6]

|  | F16F 15/027 |
· · · | comprising control arrangements [6]

|  | F16F 15/03 |
· · | using electromagnetic means (Fulltext... Hierarchy... Expanded...F16F 9/53 takes precedence) [5]

|  | F16F 15/04 |
· · | using elastic means (single elements or their attachment Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16F 1/00-F16F 13/00) [2]

|  | F16F 15/06 |
· · · | with metal springs (with rubber springs also Fulltext... Hierarchy... Expanded...F16F 15/08)

|  | F16F 15/067 |
· · · · | using only wound springs [6]

|  | F16F 15/073 |
· · · · | using only leaf springs [6]

|  | F16F 15/08 |
· · · | with rubber springs

|  | F16F 15/10 |
· | Suppression of vibrations in rotating systems by making use of members moving with the system (by balancing Fulltext... Hierarchy... Expanded...F16F 15/22; with flywheels acting variably or intermittently Fulltext... Hierarchy... Expanded...F16H)

|  | F16F 15/12 |
· · | using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon (Fulltext... Hierarchy... Expanded...F16F 15/16 takes precedence) [6]

|  | F16F 15/121 |
· · · | using springs as elastic members, e.g. metallic springs (Fulltext... Hierarchy... Expanded...F16F 15/131 takes precedence) [6]

|  | F16F 15/123 |
· · · · | Wound springs [6]

|  | F16F 15/124 |
· · · · | Plastics springs, e.g. made of rubber (Fulltext... Hierarchy... Expanded...F16F 15/123 takes precedence) [6]

|  | F16F 15/126 |
· · · · · | consisting of at least one annular element surrounding the axis of rotation [6]

|  | F16F 15/127 |
· · · · | using plastics springs combined with other types of springs [6]

|  | F16F 15/129 |
· · · | characterised by friction-damping means (Fulltext... Hierarchy... Expanded...F16F 15/131 takes precedence) [6]

|  | F16F 15/131 |
· · · | the rotating system comprising two or more gyratory masses [6]

|  | F16F 15/133 |
· · · · | using springs as elastic members, e.g. metallic springs [6]

|  | F16F 15/134 |
· · · · · | Wound springs [6]

|  | F16F 15/136 |
· · · · · | Plastics springs, e.g. made of rubber (Fulltext... Hierarchy... Expanded...F16F 15/134 takes precedence) [6]

|  | F16F 15/137 |
· · · · · | the elastic members consisting of two or more springs of different types [6]

|  | F16F 15/139 |
· · · · | characterised by friction-damping means [6]

|  | F16F 15/14 |
· · | using freely-swinging masses rotating with the system

|  | F16F 15/16 |
· · | using a fluid (devices connecting input and output members Fulltext... Hierarchy... Expanded...F16D)

|  | F16F 15/167 |
· · · | having an inertia member, e.g. ring [6]

|  | F16F 15/173 |
· · · · | provided within a closed housing [6]

|  | F16F 15/18 |
· · | using electric means (dynamo-electric devices Fulltext... Hierarchy... Expanded...H02K)

|  | F16F 15/20 |
· | Suppression of vibrations of rotating systems by favourable grouping or relative arrangement of the moving members of the system or systems

|  | F16F 15/22 |
· | Compensation of inertia forces

|  | F16F 15/24 |
· · | of crankshaft systems by particular disposition of cranks, pistons, or the like

|  | F16F 15/26 |
· · | of crankshaft systems using solid masses, other than the ordinary pistons, moving with the system

|  | F16F 15/28 |
· | Counterweights; Attaching or mounting same (for roll-type closures Fulltext... Hierarchy... Expanded...E06B 9/62)

|  | F16F 15/30 |
· | Flywheels (Fulltext... Hierarchy... Expanded...F16F 15/16 takes precedence; suppression of vibrations in rotating systems using elastic members or friction-damping members moving with the system Fulltext... Hierarchy... Expanded...F16F 15/12; rotary-body aspects in general Fulltext... Hierarchy... Expanded...F16C 13/00, Fulltext... Hierarchy... Expanded...F16C 15/00) [6]

|  | F16F 15/305 |
· · | made of plastics, e.g. fibre reinforced plastics (FRP) [6]

|  | F16F 15/31 |
· · | characterised by means for varying the moment of inertia [6]

|  | F16F 15/315 |
· · | characterised by their supporting arrangement, e.g. mountings, cages, securing inertia member to shaft (Fulltext... Hierarchy... Expanded...F16F 15/31 takes precedence) [6]

|  | F16F 15/32 |
· | Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels [2,5]

|  | F16F 15/34 |
· · | Fastening arrangements therefor [5]

|  | F16F 15/36 |
· · | operating automatically [5]

|  | F16F 101/00 - F16F 103/00 |
Indexing scheme associated with group Fulltext... Hierarchy... Expanded...F16F 15/00, relating to the arrangement of two or more gyratory masses. The indexing codes should be unlinked. [6]

|  | F16F 101/00 - F16F 103/00 |
Note(s) Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code. [6]

|  | F16F 101/00 |
Serial arrangement of gyratory masses [6]

|  | F16F 103/00 |
Parallel arrangement of gyratory masses [6]