CPC Definition - Subclass F16F
This place 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.
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Spring mattresses | |
Springs or shock-absorbers for protheses | |
Vibration dampers in skis | |
Vehicle suspensions | |
Mounting of bumpers on vehicles | |
Rail vehicle suspensions | |
Buffers for railway or tramway vehicles | |
Vehicle chassis frames having impact absorbing means | |
Resiliently mounted saddles on cycles | |
Steering dampers | |
Anti-vibration mounting of marine propulsion plant in ships | |
Arrangement of shock-absorbers or springs in aeroplane alighting gear | |
Containers, packing elements or packages with shock-absorbing means | |
Resilient mountings in washing machines | |
Resilient mountings in domestic spin-dryers | |
Protection of buildings against vibrations or shocks | |
Braking devices with springs structurally combined with hinges | |
Spring motors | |
Pipe or cable supports | |
Resilient mounting of lighting devices | |
Gun cradles to permit recoil | |
Vibration dampers for archery bows | |
Weighing apparatus, e.g. arrangement of shock-absorbers in weighing apparatus | |
Springs for clocks or watches | |
Damping of movements in instruments | |
Disposition of shock-absorbing devices for displaceable control elements in nuclear reactors | |
Arrangements or devices for damping mechanical oscillations of power lines |
Attention is drawn to the following places, which may be of interest for search:
Indicating or recording in connection with measuring |
For the whole F16F range, consider the indexing range F16F 2222/00 - F16F 2238/045
In this place, the following terms or expressions are used with the meaning indicated:
Steel or metal | Mention of “steel” or “metal” in groups F16F, unless specific mention is made otherwise, should be seen in the light of the title of group F16F 1/00, i.e. material having low internal friction. This normally includes composite materials such as fibre-reinforced plastics. |
Rubber or plastics | Mention of “rubber” or “plastics” in group F16F, unless specific mention is made otherwise, should be seen in the light of the title of group F16F 1/36, i.e. material having high internal friction. This normally does NOT include composite materials such as fibre-reinforced plastics except in the case of groups F16F 1/366 - F16F 1/3686 and F16F 15/305. |
This place covers:
Spring units comprising several springs made of elastic material, e.g. springs which are superposed upon each other or springs arranged in parallel
This place does not cover:
Springs working with fluid or including fluid spring |
This place covers:
Spring devices in which the compressibility of the liquid (specifically not a gas) is a key feature
This place does not cover:
Dampers with solid or semi solid material |
This place covers:
Spring device in which the spring effect is given by magnetic attraction or repulsion; the device may work with permanent magnets or electromagnets
This place does not cover:
Magnetic spring arrangements for the suppression of vibration in systems |
This place covers:
- One shot absorbers
- Vibration dampers using friction between particles
- Vibration dampers using friction between surfaces
- Vibration dampers using inertia effect
- Vibration dampers or shock absorbers using plastic deformation
- Vibration dampers of cable support type
This place does not cover:
Vibration dampers using fluid | |
Vibration dampers specific for rotary systems |
This place covers:
Movement-dampers using a fluid (i.e.: compressible or incompressible) as damping medium
Some examples:
- gas springs,
- hydraulic shock absorbers using liquid only, the damping effect being achieved by throttling or viscous shear
- hydraulic shock absorbers using liquid and gas in combination
This place does not cover:
Using liquid springs | |
Connection of valves to inflatable elastic bodies | |
Braking devices, stops or buffers for wing-operating appliances |
This place covers:
Devices comprising a combination of a plastic springs (e.g. elastomeric springs) and dampers using friction or fluid
This place does not cover:
Using liquid springs | |
Unit comprising a magnetic spring | |
Device comprising a sponge rubber as pressure absorbing means |
This place covers:
Suppression of vibrations in rotating as well non rotating systems; and means or arrangements for avoiding or reducing out-of-balance forces; some examples:
- Systems characterised by the control method or their control circuitry
- Systems using electro- or magnetostrictive actuation means
- 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 systems
- Suppression of vibrations in rotating systems by making use of members moving with the system
- Suppression of vibrations of rotating systems by favourable grouping or relative arrangements of the moving members of the system or systems
- Compensation of inertia forces
- Additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system
- Flywheels
This place does not cover:
Damping of non-rotary systems using inertia effect | |
Prevention or isolation of vibrations in machine tools | |
Vehicle seat suspension devices | |
Absorbing or balancing means for aircraft propellers | |
Absorbing or balancing means for rotorcraft rotors | |
Methods or devices for protecting against, or damping of, acoustic waves, e.g. sound |
Attention is drawn to the following places, which may be of interest for search:
Testing static and dynamic balance of machines or structures |