ClassID:

149406

F16F1/22 - CPC Classification

Classification description:

Springs made of steel or other material having low internal friction ; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant; Leaf springs with means for modifying the spring characteristic

Recent Application in this class:
#1
20250304015
2025-10-02

ADJUSTABLE BLADE LOAD MECHANISM FOR CANTILEVER BEAM WIPER ARM ASSEMBLY

#2
20250137509
2025-05-01

SPRING KEEPERS AND SPRING ASSEMBLIES INCORPORATING THE SAME

#3
20230366442
2023-11-16

LEAF SPRING WITH HIGH RESOLUTION STIFFNESS CONTROL

#4
20230313857
2023-10-05

LEAF SPRING THAT PROVIDES MULTIPLE SPRING RATES

#5
20200047577
2020-02-13

Variable rate flat spring arrangement

#6
20190323572
2019-10-24

Bi-directional non-linear spring

#7
20190126498
2019-05-02

Variable stiffness series elastic actuator

#8
20190111750
2019-04-18

Longitudinal leaf spring device for suspension of a motor vehicle body

#9
20180320747
2018-11-08

Springs with Dynamically Variable Stiffness and Actuation Capability

#10
20180298822
2018-10-18

Support assembly having variable stiffness member

#11
20180297430
2018-10-18

Variable rate flat spring arrangement

#12
20180195571
2018-07-12

Adjustable negative stiffness mechanisms

#13
20180195570
2018-07-12

Adjustable negative stiffness systems

#14
20180128336
2018-05-10

Bi-directional non-linear spring

#15
20180003408
2018-01-04

Damper with adjustable resistance to blade motion

#16
20170370436
2017-12-28

Spring for a vehicle

#17
20170051808
2017-02-23

Smart Springs and their Combinations

#18
20160348752
2016-12-01

Hingeless, large-throw negative stiffness structure

#19
20160245354
2016-08-25

Beam-based nonlinear spring

#20
20160082603
2016-03-24

Variable stiffness actuator with large range of stiffness

#21
20150233440
2015-08-20

Beam-based nonlinear spring

#22
20150183493
2015-07-02

SHOCK MITIGATION APPARATUS

#23
20140048988
2014-02-20

LEAF SPRING ASSEMBLY

#24
20140027961
2014-01-30

Leaf spring system

#25
20130292887
2013-11-07

Load stabilizing insert for vehicle springs

#26
20120133090
2012-05-31

Supplementary vehicle spring assembly

#27
20100320658
2010-12-23

Apparatus for changing a leaf spring characteristic

#28
20070108820
2007-05-17

Structure for attaching spring

#29
20070108818
2007-05-17

Structure for attaching spring

#30
20070102854
2007-05-10

Stabilizer for leaf spring suspension device

#31
20070040312
2007-02-22

Adjustable stiffness leaf spring actuators

#32
20060048477
2006-03-09

Resilient brace

#33
14214242
2019-09-24

Methods to dynamically alter the stiffness of nonlinear structures