ClassID:

149920

F16F2228/063 - CPC Classification

Classification description:

Functional characteristics, e.g. variability, frequency-dependence; Stiffness Negative stiffness

Recent Application in this class:
#1
20260009427
2026-01-08

Torsional Vibration Control Coupling

#2
20250283521
2025-09-11

INTELLIGENT VIBRATION ISOLATOR AND CONTROL METHOD THEREOF

#3
20250264143
2025-08-21

REVERSE FORCE MECHANISM

#4
20250251031
2025-08-07

SYSTEM WITH VARIABLE STIFFNESS

#5
20250198478
2025-06-19

ENERGY DISSIPATION USING NEGATIVE STIFFNESS SHELLS

#6
20250035183
2025-01-30

Crankshaft Arrangement With Torsional Vibration Damper

#7
20240401361
2024-12-05

MULTIDIRECTIONAL HYSTERETIC DAMPER ENDOWED WITH NEGATIVE STIFFNESS

#8
20240229888
2024-07-11

AIR SPRING

#9
20240171036
2024-05-23

Voice coil motor direct-drive active vibration isolation and leveling integrated platform

#10
20240035537
2024-02-01

IMPROVEMENTS IN AND RELATING TO VIBRATION CONTROL SYSTEMS

#11
20240035536
2024-02-01

IMPROVEMENTS IN AND RELATING TO VIBRATION CONTROL SYSTEMS

#12
20240035535
2024-02-01

VIBRATION CONTROL SYSTEMS

#13
20230408934
2023-12-21

SYSTEM AND PROJECTION EXPOSURE APPARATUS

#14
20230074188
2023-03-09

Negative stiffness generating mechanism and quasi-zero stiffness vibration isolator

#15
20230043495
2023-02-09

Bidirectional collapse-proof damper with macroscopic NPR structure and bridge structure having same

#16
20220412435
2022-12-29

Crankshaft arrangement comprising a torsional vibration damper

#17
20220299084
2022-09-22

Vibration Isolator Pre-Load Mechanism

#18
20220299083
2022-09-22

Stacked disk spring vibration isolator with increased lateral load capacity

#19
20220243782
2022-08-04

Horizontally arranged six-degree-of-freedom constant-stiffness mechanism

#20
20220205508
2022-06-30

Mechanical metamaterials as an energy shield

#21
20220145958
2022-05-12

Vibration isolator with flexible housing

#22
20220144152
2022-05-12

Vehicle seat assembly incorporating quasi-zero/negative stiffness vibration isolators

#23
20210361929
2021-11-25

Spring with a plurality of elements, and actuator including such as a spring

#24
20210310537
2021-10-07

Electromagnetic force control method of magnetic disk type negative stiffness electromagnetic actuator

#25
20210293301
2021-09-23

Multi-dimensional magnetic negative-stiffness mechanism and multi-dimensional magnetic negative-stiffness vibration isolation system composed thereof

#26
20210293295
2021-09-23

Energy dissipation using negative stiffness shells

#27
20210285512
2021-09-16

MATERIALS HAVING GRADED INTERNAL GEOMETRY, AND ASSOCIATED SYSTEMS AND METHODS

#28
20210231190
2021-07-29

Vibration damping device and elevator apparatus

#29
20210131911
2021-05-06

Test device for quasi zero stiffness isolator

#30
20210130127
2021-05-06

Sway amount estimation system and elevator apparatus

#31
20210094799
2021-04-01

Vibration damping device and elevator apparatus

#32
20210094793
2021-04-01

Vibration damping system and elevator apparatus

#33
20210080835
2021-03-18

Vibration isolation system and lithographic apparatus

#34
20200049228
2020-02-13

Vibration isolator and systems including same

#35
20190186589
2019-06-20

Vibration isolator with series and/or parallel conical disc spring member arrangements

#36
20190186588
2019-06-20

Vibration isolator mechanism with adjustable force-deflection characteristics

#37
20190186587
2019-06-20

Vibration isolator mechanism with adjustable force application mechanism

#38
20190040931
2019-02-07

Passive variable negative stiffness device and methods of use thereof

#39
20180328434
2018-11-15

Vibration isolation device, lithographic apparatus and method to tune a vibration isolation device

#40
20180312086
2018-11-01

Lattice based seat cushion to improve comfort and vibration isolation

#41
20180195571
2018-07-12

Adjustable negative stiffness mechanisms

#42
20180195570
2018-07-12

Adjustable negative stiffness systems

#43
20180080521
2018-03-22

Hingeless, large-throw negative stiffness structure

#44
20170217579
2017-08-03

Negative spring compensation for elastomeric bearing torque

#45
20170045107
2017-02-16

Single degree-of-freedom magnetic vibration isolation device

#46
20160369867
2016-12-22

VIBRATION ISOLATOR AND SYSTEMS INCLUDING SAME

#47
20160348752
2016-12-01

Hingeless, large-throw negative stiffness structure

#48
20160245363
2016-08-25

Mounting assemblies and systems including same

#49
20160032997
2016-02-04

Negative stiffness honeycomb material

#50
20150369331
2015-12-24

Negative stiffness system for gravity compensation of micropositioner

#51
20150354654
2015-12-10

Negative stiffness apparatus

#52
20150204413
2015-07-23

Negative stiffness hydraulic system

#53
20150175236
2015-06-25

Suspension control system for a bicycle, bicycle, and suspension control method

#54
20150122970
2015-05-07

Compact vertical-motion isolator

#55
20150014510
2015-01-15

Support module for lithography system

#56
20140265077
2014-09-18

Negative spring compensation for elastomeric bearing torque

#57
20140117600
2014-05-01

High stiffness vibration damping apparatus, methods and systems

#58
20140048989
2014-02-20

VIBRATION ISOLATION SYSTEMS

#59
20110278425
2011-11-17

VIBRATION ISOLATION SYSTEM WITH A UNIQUE LOW VIBRATION FREQUENCY

#60
18495727
2024-12-17

Isolation system and method

#61
18110729
2023-12-12

Isolation system and method

#62
17864067
2023-04-11

Isolation system and method

#63
17671958
2023-02-21

Vibration damping actuator

#64
16672409
2022-10-04

Torsion springs with changeable stiffness

#65
14839770
2022-10-18

Isolation system and method

#66
14214242
2019-09-24

Methods to dynamically alter the stiffness of nonlinear structures

#67
13837957
2017-10-17

Enhanced damping materials using negative stiffness inserts

#68
13802197
2018-07-24

Assembly with negative torsional stiffness