BR112014010057A8 - roda com sistema de suspensão e unidade centralizadora com sistema de suspensão - Google Patents

roda com sistema de suspensão e unidade centralizadora com sistema de suspensão

Info

Publication number
BR112014010057A8
BR112014010057A8 BR112014010057A BR112014010057A BR112014010057A8 BR 112014010057 A8 BR112014010057 A8 BR 112014010057A8 BR 112014010057 A BR112014010057 A BR 112014010057A BR 112014010057 A BR112014010057 A BR 112014010057A BR 112014010057 A8 BR112014010057 A8 BR 112014010057A8
Authority
BR
Brazil
Prior art keywords
suspension system
hub
wheel
centering unit
threshold value
Prior art date
Application number
BR112014010057A
Other languages
English (en)
Portuguese (pt)
Other versions
BR112014010057A2 (pt
Inventor
Sardes Ahishay
Haim Gross Amichay
Brand Dvir
Winshtein Ronny
Original Assignee
Softwheel Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PCT/IB2012/000530 external-priority patent/WO2012153170A1/en
Application filed by Softwheel Ltd filed Critical Softwheel Ltd
Publication of BR112014010057A2 publication Critical patent/BR112014010057A2/pt
Publication of BR112014010057A8 publication Critical patent/BR112014010057A8/pt

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND 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
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—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 systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/08—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring
    • B60G15/12—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring and fluid damper
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1078—Parts, details or accessories with shock absorbers or other suspension arrangements between wheels and frame
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B9/00—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B9/00—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces
    • B60B9/02—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces using springs resiliently mounted bicycle rims
    • B60B9/06—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces using springs resiliently mounted bicycle rims in helical form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B9/00—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces
    • B60B9/18—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces using fluid
    • B60B9/24—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces using fluid with pistons and cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B9/00—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces
    • B60B9/26—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces comprising resilient spokes
    • B60B9/28—Wheels of high resiliency, e.g. with conical interacting pressure-surfaces comprising resilient spokes with telescopic action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND 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
    • F16F1/00—Springs
    • F16F1/02—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
    • F16F1/04—Wound springs
    • F16F1/12—Attachments or mountings
    • F16F1/128—Attachments or mountings with motion-limiting means, e.g. with a full-length guide element or ball joint connections; with protective outer cover
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND 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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/0209—Telescopic
    • F16F9/0245—Means for adjusting the length of, or for locking, the spring or dampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/10—Reduction of
    • B60B2900/131—Vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/30—Increase in
    • B60B2900/313—Resiliency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/30—In-wheel mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/24—Wheelchairs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/80—Other vehicles not covered by groups B60Y2200/10 - B60Y2200/60
    • B60Y2200/84—Wheelchairs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
  • Springs (AREA)
  • Fluid-Damping Devices (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
  • Handcart (AREA)
BR112014010057A 2011-10-28 2012-10-08 roda com sistema de suspensão e unidade centralizadora com sistema de suspensão BR112014010057A8 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201161552505P 2011-10-28 2011-10-28
PCT/IB2012/000530 WO2012153170A1 (en) 2011-05-11 2012-03-20 Selective wheel suspension system
PCT/IB2012/001994 WO2013061121A1 (en) 2011-10-28 2012-10-08 Wheel with suspension system and centralizing unit with suspension system

Publications (2)

Publication Number Publication Date
BR112014010057A2 BR112014010057A2 (pt) 2017-06-13
BR112014010057A8 true BR112014010057A8 (pt) 2017-06-20

Family

ID=48167185

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112014010057A BR112014010057A8 (pt) 2011-10-28 2012-10-08 roda com sistema de suspensão e unidade centralizadora com sistema de suspensão

Country Status (10)

Country Link
US (1) US9539876B2 (enExample)
EP (1) EP2771589B1 (enExample)
JP (1) JP6407025B2 (enExample)
KR (1) KR102092692B1 (enExample)
CN (2) CN103958923B (enExample)
AU (1) AU2012328109B2 (enExample)
BR (1) BR112014010057A8 (enExample)
CA (1) CA2886751C (enExample)
IL (1) IL232293A (enExample)
WO (1) WO2013061121A1 (enExample)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013061121A1 (en) 2011-10-28 2013-05-02 Softwheel Ltd. Wheel with suspension system and centralizing unit with suspension system
EP2707229B1 (en) 2011-05-11 2021-04-21 Ree Automotive Ltd Selective wheel suspension system
HK1221943A1 (zh) 2013-04-20 2017-06-16 Softwheel Ltd 车轮悬架
US9868520B1 (en) 2014-03-10 2018-01-16 Softwheel Ltd. Landing gear apparatuses and applications thereof
CN105422703A (zh) * 2014-03-29 2016-03-23 金丽秋 一种压缩距离可调型弹簧组件
CN104070919B (zh) * 2014-06-10 2016-04-13 宁波途锐达休闲用品有限公司 减震车轮
ITUB20151830A1 (it) * 2015-07-02 2017-01-02 Sistemi Sospensioni Spa Tampone idraulico in compressione per ammortizzatore idraulico per sospensione di veicolo, con dispositivo limitatore di pressione.
WO2017034489A1 (en) * 2015-08-21 2017-03-02 Eroğlu Ali Riza Multiple feet wheel
KR101676387B1 (ko) 2015-11-06 2016-11-15 동아대학교 산학협력단 밸브형 서스펜션을 구비한 휠체어
US10525766B2 (en) 2017-09-22 2020-01-07 Keir P. Daniels Wheel with adjustable radius and tread firmness
US10766300B2 (en) 2017-11-09 2020-09-08 Michael Goren Expandable and retractable wheel assembly
CN108357293B (zh) * 2018-03-22 2024-01-12 安徽理工大学 一种具有减震功能的爬楼梯附属车轮
CN108382126B (zh) * 2018-05-08 2024-04-19 南京辰腾星科技有限公司 一种可避震的车轮以及车辆
WO2021071801A1 (en) * 2019-10-08 2021-04-15 Gacw Incorporated Off-highway vehicle including frame coupled gas spring wheel assemblies
US11590795B2 (en) 2018-07-19 2023-02-28 Gacw Incorporated Wheel assembly including sidewall cover assembly and related methods
US11554606B2 (en) 2018-07-19 2023-01-17 Gacw Incorporated Off-highway vehicle including frame coupled gas spring wheel assemblies
US11325417B2 (en) 2018-07-19 2022-05-10 Gacw Incorporated Wheel assembly including arcuate inner and outer rim assemblies and related methods
US11135871B2 (en) 2018-07-19 2021-10-05 Gacw Incorporated Wheel assembly including inner and outer rim coupled hydraulic dampers and related methods
CN108715119A (zh) * 2018-05-30 2018-10-30 安徽机电职业技术学院 一种汽车悬架减震装置
US11524538B2 (en) 2018-07-01 2022-12-13 Ree Automotive Ltd Wheel suspension and transmission gear assembly
US10723191B1 (en) * 2018-07-01 2020-07-28 Softwheel Ltd. In-wheel three-arm suspension for vehicles
US11565552B2 (en) 2018-07-19 2023-01-31 Gacw Incorporated Wheel assembly including spaced apart tread members having stacked rubber and reinforcing layers and related methods
US11458759B2 (en) * 2018-07-19 2022-10-04 Gacw Incorporated Wheel assembly including tread assemblies and related methods
US10987970B2 (en) * 2018-07-19 2021-04-27 Gacw Incorporated Wheel assembly including inner and outer rim coupled rings defining a mechanical stop and related methods
US10987971B2 (en) * 2018-07-19 2021-04-27 Gacw Incorporated Wheel assembly including outer rim coupled ring defining a mechanical stop and related methods
CN109083653B (zh) * 2018-08-12 2020-10-02 蔡天明 一种编组机车
CN114025972B (zh) 2019-06-28 2023-04-21 瑞翼汽车有限公司 用于双臂悬架和轮内转向的装置和方法
CN110686142A (zh) * 2019-09-17 2020-01-14 句容中圣板带科技有限公司 一种旋挖钻机用减震底座
US12246574B2 (en) 2020-01-28 2025-03-11 Ree Automotive Ltd Wheel suspension system with off-wheel-center arm
CZ309350B6 (cs) * 2020-04-17 2022-09-21 Marján Jiří Ing., Ph.D. Odpružený náboj kola
CN111442046A (zh) * 2020-05-15 2020-07-24 天津安安科技有限公司 一种拉压弹性体
CN111412236A (zh) * 2020-05-15 2020-07-14 天津安安科技有限公司 一种拉压弹性机构
CN112277526B (zh) * 2020-11-02 2021-11-05 合肥工业大学 一种主动控制减振降噪的轨道车辆弹性车轮
US11969663B2 (en) * 2021-10-19 2024-04-30 Silverlit Limited Toy vehicle suspension and wheels
TWI795326B (zh) * 2022-07-13 2023-03-01 蘇建忠 自動減速輪體
CN116653489A (zh) * 2023-06-21 2023-08-29 中国人民解放军火箭军工程大学 一种柔性机械轮
US20250058583A1 (en) * 2023-08-15 2025-02-20 Gacw Incorporated Wheel assembly including hollow piston shaft orifice and related methods
WO2025116836A1 (en) * 2023-11-27 2025-06-05 Bursa Uludağ Üni̇versi̇tesi̇ A balancing system for in-wheel suspension systems and a rim structure with this system

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191217140A (en) * 1912-07-23 1913-05-22 Henry James Marks An Improved Cushion-spring Wheel.
US1133973A (en) * 1913-12-31 1915-03-30 Otto C Koch Spring-wheel.
US1132787A (en) * 1914-04-15 1915-03-23 Auby J Mansfield Vehicle-wheel.
US1189963A (en) * 1915-02-04 1916-07-04 Charles W Jones Yielding unit.
US1495699A (en) * 1920-05-21 1924-05-27 Kunoki U-Hyoe Resilient wheel
US1416078A (en) * 1920-05-22 1922-05-16 Taylor Aca Columbus Resilient wheel
US1584679A (en) * 1923-09-04 1926-05-11 John L Stoltz Resilient wheel
US2639140A (en) * 1947-12-24 1953-05-19 Frenkel Meyer Variable rate spring device
FR1105719A (fr) * 1954-06-05 1955-12-07 Amortisseur
GB1549611A (en) 1976-09-22 1979-08-08 Atomic Energy Authority Uk Hub assemblies
US4310149A (en) 1979-03-29 1982-01-12 Sycam Advanced Technology Corp. Shock absorber
US4385774A (en) * 1981-03-20 1983-05-31 Blake John C Heavy duty vehicle suspension system
GB8608270D0 (en) * 1986-04-04 1986-05-08 Jones S Ground-engaging wheels for vehicles
US4777866A (en) * 1986-09-30 1988-10-18 Nanjing Automobile Research Institute Variable displacement radial piston pumps or motors
CN1040000A (zh) * 1989-03-09 1990-02-28 沙占明 可使压力转变为前进力的车轮
CN2157878Y (zh) * 1993-03-10 1994-03-02 牛永鸿 减震轮
FR2763284A1 (fr) * 1997-05-16 1998-11-20 Conception & Dev Michelin Sa Ensemble comportant une roue et une suspension integree a la roue
FR2795947A1 (fr) * 1999-07-05 2001-01-12 Alain Limpas Dispositif permettant aux fauteuils roulants de franchir des obstacles tels que trottoirs ou marches d'escaliers tout en gardant l'autonomie et la mobilite d'un fauteuil mu par la force des bras
US7537228B2 (en) * 2003-07-22 2009-05-26 Nihon University Monocycle
CA2509102A1 (en) 2005-06-03 2006-12-03 Geoffrey Boyer Marketing Int'l Ltd. Adaptive energy absorbing suspension for a wheel
DE102005032537A1 (de) * 2005-07-12 2007-01-25 Kastriot Merlaku Federsystem für Fahrzeuge aller Art
FR2898077B1 (fr) * 2006-03-01 2011-03-04 Peugeot Citroen Automobiles Sa Bandage non pneumatique pour une roue de vehicule, notamment une roue de vehicule automobile
KR100813025B1 (ko) * 2006-07-11 2008-03-14 최영 자동차 서스펜션 휠
JP4797958B2 (ja) * 2006-12-08 2011-10-19 トヨタ自動車株式会社 車両のサスペンション
JP4888189B2 (ja) * 2007-03-29 2012-02-29 日産自動車株式会社 サスペンション装置
CN201214359Y (zh) * 2008-05-21 2009-04-01 曹汉敏 一种用于辐条式车轮上的减震器
AU2009316230B2 (en) * 2008-11-11 2015-07-30 Big Tyre Pty Ltd Spring suspension assembly
WO2013061121A1 (en) 2011-10-28 2013-05-02 Softwheel Ltd. Wheel with suspension system and centralizing unit with suspension system
EP2707229B1 (en) 2011-05-11 2021-04-21 Ree Automotive Ltd Selective wheel suspension system
US20130340902A1 (en) * 2012-06-25 2013-12-26 Zoltan A. Kemeny Shweel

Also Published As

Publication number Publication date
IL232293A0 (en) 2014-06-30
US9539876B2 (en) 2017-01-10
WO2013061121A1 (en) 2013-05-02
AU2012328109A1 (en) 2014-05-01
KR20140084077A (ko) 2014-07-04
IL232293A (en) 2017-08-31
JP2014530791A (ja) 2014-11-20
CN103958923B (zh) 2016-04-13
AU2012328109B2 (en) 2017-05-25
KR102092692B1 (ko) 2020-03-25
CN103958923A (zh) 2014-07-30
CA2886751A1 (en) 2013-05-02
HK1225780A1 (zh) 2017-09-15
EP2771589B1 (en) 2021-08-04
US20140300037A1 (en) 2014-10-09
CN105805223B (zh) 2019-05-14
JP6407025B2 (ja) 2018-10-17
CN105805223A (zh) 2016-07-27
BR112014010057A2 (pt) 2017-06-13
EP2771589A1 (en) 2014-09-03
CA2886751C (en) 2020-09-15

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B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B350 Update of information on the portal [chapter 15.35 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B11D Dismissal acc. art. 38, par 2 of ipl - failure to pay fee after grant in time