F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
 F01 - 
F04
Subsection index
MACHINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF04C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF04B
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
ENGINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF03C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF03C
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
PUMPS
positive displacement
rotary or oscillating pistonF04C
reciprocating piston or otherF04B
non-positive displacementF04D
  
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

Note(s)

  1. 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]
  2. 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.
    A47C 23/00-A47C 27/00Spring mattresses 
    A63C 5/06Vibration dampers in skis 
    B60GVehicle suspensions 
    B60R 19/24Mounting of bumpers on vehicles 
    B61FRail vehicle suspensions 
    B61G 11/00Buffers for railway or tramway vehicles 
    B62D 21/15Vehicle chassis frames having impact absorbing means 
    B62J 1/00Resiliently mounted saddles on cycles 
    B62K 21/00Steering dampers 
    B63H 1/00Marine propellers having vibration-damping means 
    B63H 21/00Anti-vibration mounting of marine propulsion plant in ships 
    B64C 25/00Arrangement of shock-absorbers or springs in aeroplane alighting gear 
    B65D 81/02Containers, packing elements or packages with shock-absorbing means 
    D06F 37/20Resilient mountings in washing machines 
    D06F 49/00Resilient mountings in domestic spin-dryers 
    F03G 1/00Spring motors 
    F21V 15/00Resilient mounting of lighting devices 
    F41A 25/00Gun cradles to permit recoil 
    F41B 5/00Vibration dampers for archery bows 
    G01D 11/00Indicating or recording in connection with measuring 
    G01G 21/00Weighing apparatus, e.g. arrangement of shock-absorbers in weighing apparatus 
    G04BClocks, watches 
    G12B 3/00Damping of movements in instruments 
    G21C 7/08Disposition 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
P:80 F16F 1/00
Springs (working with fluid F16F 5/00, F16F 9/00)
 F16F 1/02
·  made of steel or other material having low internal friction (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 1/36
·  made of plastics, e.g. rubber; made of material having high internal friction
 F16F 1/38
·  ·  with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin
 F16F 1/42
·  ·  characterised by the mode of stressing
 F16F 1/44
·  ·  ·  loaded mainly in compression
P:30 F16F 3/00
Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic (consisting of a stack of similar plastics, e.g. rubber, elements separated by non-elastic intermediate layers F16F 1/36; including fluid springs F16F 5/00, F16F 13/00)
P:10 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
P:50 F16F 6/00
Magnetic springs; Fluid magnetic springs
P:70 F16F 7/00
Vibration-dampers; Shock-absorbers (using fluid F16F 5/00, F16F 9/00; specific for rotary systems F16F 15/10)
 F16F 7/10
·  using inertia effect
 F16F 7/12
·  using plastic deformation of members
P:60 F16F 9/00
Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium (F16F 5/00 takes precedence; connection of valves to inflatable elastic bodies B60C 29/00; door-operating appliances with fluid braking systems E05F)
 F16F 9/02
·  using gas only
 F16F 9/10
·  using liquid only; using a fluid of which the nature is 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 9/32
·  Details
 F16F 9/34
·  ·  Special valve constructions (valves in general F16K); Shape or construction of throttling passages
 F16F 9/36
·  ·  Special sealings, including sealings or guides for piston-rods
 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 (F16F 9/53, F16F 9/56 take precedence; temperature correction only F16F 9/50)  [5,6]
 F16F 9/48
·  ·  Arrangements for providing different damping effects at different parts of the stroke (F16F 9/53, F16F 9/56 take precedence)  [5,6]
 F16F 9/50
·  ·  Special means providing automatic damping adjustment (F16F 9/53, F16F 9/56 take precedence; automatic temperature damping adjustment combined with external adjustment F16F 9/44)  [5,6]
 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 (F16F 9/48 takes precedence)  [6]
P:40 F16F 11/00
Vibration-dampers or shock-absorbers working with both friction and a damping fluid
P:20 F16F 13/00
Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs (F16F 5/00 takes precedence)
 F16F 13/02
·  damping by frictional contact between the spring and braking means (frictionally coacting wound springs F16F 3/00)
 F16F 13/04
·  comprising both a plastics spring and a damper, e.g. a friction damper  [6]
P:0 F16F 15/00
Suppression of vibrations in systems (vehicle seat suspension devices 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 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 B32B; suppression of vibration in ships B63)
 F16F 15/023
·  ·  using fluid means  [6]
 F16F 15/03
·  ·  using electromagnetic means (F16F 9/53 takes precedence)  [5]
 F16F 15/04
·  ·  using elastic means (single elements or their attachment F16F 1/00-F16F 13/00)  [2]
 F16F 15/06
·  ·  ·  with metal springs (with rubber springs also F16F 15/08)
 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 F16F 15/22; with flywheels acting variably or intermittently F16H)
 F16F 15/12
·  ·  using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon (F16F 15/16 takes precedence)  [6]
 F16F 15/121
·  ·  ·  using springs as elastic members, e.g. metallic springs (F16F 15/131 takes precedence)  [6]
 F16F 15/131
·  ·  ·  the rotating system comprising two or more gyratory masses  [6]
 F16F 15/16
·  ·  using a fluid (devices connecting input and output members F16D)
 F16F 15/22
·  Compensation of inertia forces
 F16F 15/30
·  Flywheels (F16F 15/16 takes precedence; suppression of vibrations in rotating systems using elastic members or friction-damping members moving with the system F16F 15/12; rotary-body aspects in general F16C 13/00, F16C 15/00)  [6]