KR960704726A - LOW-NOISE VEHICLE WHEEL - Google Patents

LOW-NOISE VEHICLE WHEEL

Info

Publication number
KR960704726A
KR960704726A KR1019960700450A KR19960700450A KR960704726A KR 960704726 A KR960704726 A KR 960704726A KR 1019960700450 A KR1019960700450 A KR 1019960700450A KR 19960700450 A KR19960700450 A KR 19960700450A KR 960704726 A KR960704726 A KR 960704726A
Authority
KR
South Korea
Prior art keywords
filling
filler
vehicle wheel
gas
tire
Prior art date
Application number
KR1019960700450A
Other languages
Korean (ko)
Inventor
에곤 투르바
Original Assignee
에곤 투르바
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
Application filed by 에곤 투르바 filed Critical 에곤 투르바
Publication of KR960704726A publication Critical patent/KR960704726A/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C17/00Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C17/00Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • B60C17/01Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional inflatable supports which become load-supporting in emergency
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00Producing pneumatic or solid tyres or parts thereof
    • B29D30/04Resilient fillings for rubber tyres; Filling tyres therewith
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C13/00Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C17/00Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • B60C17/04Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency
    • B60C17/06Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient
    • B60C17/066Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional non-inflatable supports which become load-supporting in emergency resilient made-up of plural spherical elements provided in the tyre chamber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C19/00Tyre parts or constructions not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C19/00Tyre parts or constructions not otherwise provided for
    • B60C19/002Noise damping elements provided in the tyre structure or attached thereto, e.g. in the tyre interior
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C29/00Arrangements of tyre-inflating valves to tyres or rims; Accessories for tyre-inflating valves, not otherwise provided for
    • B60C29/007Arrangements of tyre-inflating valves to tyres or rims; Accessories for tyre-inflating valves, not otherwise provided for for tyres with segmental sections or for multi-chamber tyres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C5/00Inflatable pneumatic tyres or inner tubes
    • B60C5/002Inflatable pneumatic tyres or inner tubes filled at least partially with foam material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
  • Tyre Moulding (AREA)

Abstract

본 발명은 차량 바퀴, 구체적으로 타이어가 달린 차량 바퀴용의 소음을 감소시키는 설계에 관한다. 본 발명은 또한 종래의 바퀴를 개발시키는 방법에도 관한다. 본 발명에 따르면, 타이어(10) 및 바퀴 외륜(1)에 의하여 형성된 빈 공간(6;6a,6b)은 과립의, 변형되지 않고 내열성 충전물로 충전된다. 충전물은 빈 공간의 공명 특성을 감쇠시켜 차량에 의해 발생되는 소음을 실질적으로 감소시킨다. 빈 공간은 본 발명에 따른 충전물로 완전히 충전된다. 충전물외에, 빈 공간을 충전시키기 위한 공지된 방법에 압축 공기와 같은 기체를 또한 사용한다. 충전은 차량 타이어의 정전기적 역동적 특성에 눈에 띌만한 영향을 미치지 않는다. 이외에도 특별한 충전 챔버(6b)또한 상기 재료를 위하여 제공될 수있다. 두번째 챔버(6a)는 공지된 방법으로 충전 기체로 충전되고 이 기체의 압력은 다이어프램(8)을 통하여 충전재에 ,따라서 타이어(10)의 벽에까지 전달된다.The present invention relates to a design for reducing noise for vehicle wheels, in particular for vehicle wheels with tires. The invention also relates to a method of developing a conventional wheel. According to the invention, the empty spaces 6; 6a, 6b formed by the tire 10 and the wheel outer ring 1 are filled with granular, undeformed, heat-resistant fillings. The filling attenuates the resonance characteristics of the empty space, substantially reducing the noise generated by the vehicle. The empty space is completely filled with the filling according to the invention. In addition to the fillings, gases such as compressed air are also used in known methods for filling empty spaces. Charging does not have a noticeable effect on the static and dynamic characteristics of the vehicle tires. In addition, a special filling chamber 6b may also be provided for the material. The second chamber 6a is filled with a filling gas in a known manner and the pressure of this gas is transmitted through the diaphragm 8 to the filling material and thus to the wall of the tire 10.

Description

저소음 차량 바퀴(LOW-NOISE VEHICLE WHEEL)LOW-NOISE VEHICLE WHEEL

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 1도는 본 발명에 따른 차량 바퀴의 주변 단면의 제1의 예시적 구체예를 나타내는 단면도이다,1 is a cross sectional view showing a first exemplary embodiment of a peripheral cross section of a vehicle wheel according to the invention,

제 2도는 본 발명에 따른 차량 바퀴의 주변 단면의 제2의 예시적 구체예를 나타내는 단면도이다,2 is a cross sectional view showing a second exemplary embodiment of a peripheral cross section of a vehicle wheel according to the invention,

제 3도는 제1도 및 제2도의 부분적인 부위의 확대도를 상세하게 나타내었다,FIG. 3 shows an enlarged view of the partial regions of FIGS. 1 and 2 in detail.

제 4도의 A 및 B는 타이어 내부 공간 충전용의 본 발명에 따른 밸브 배열의 도식이다.A and B in FIG. 4 are schematic diagrams of a valve arrangement according to the invention for filling tire internal spaces.

Claims (17)

과립이나 모서리가 날카롭지 않고 형태 보존성 및 내열성을 갖는 충전재로 타이어 내부공간(6)이 충전되고 미리 측정한 충전압에서 충전재가 차지하지 않은 나머지 부피를 충전 기체로 충전시키는 것을 특징으로 하며, 바퀴 외륜(1)의 주변을 둘러쌈으로써 타이어(10)과 바퀴 외륜(1)에 의하여 결합된 기체-가압된 타이어 내부 공간(6)이 형성되고 충전 기체, 구체적으로 압축 공기로 충전될 수 있는 타이어(10)를 갖는 차량 바퀴.It is characterized in that the tire inner space (6) is filled with a filler having a shape preservation and heat resistance without granules or corners, and the remaining volume not occupied by the filler at a pre-measured filling pressure is filled with a filling gas. The periphery of 1) forms a gas-pressurized tire inner space 6 coupled by the tire 10 and the wheel outer ring 1 and which can be filled with a filling gas, specifically compressed air 10. Vehicle wheel). 제1항에 있어서, 타이어 내부 공간(6)이 과립 충전재로 실질적으로 완전히 충전되고 충전 기체가 충전재의 간극을 충전시키는 것을 특징으로 하는 차량 바퀴.2. The vehicle wheel according to claim 1, wherein the tire interior space (6) is substantially completely filled with granular filler and the filling gas fills the gap of the filler. 제2항에 있어서, 충전 기체와 충전재의 부피비가 1:10 미만, 특히 1:20인 것을 특징으로 하는 차량 바퀴.Vehicle wheel according to claim 2, characterized in that the volume ratio of filler gas to filler is less than 1:10, in particular 1:20. 제2항 또는 제3항에 있어서, 타이어 내부 공간(6)을 과립 충전재 및 충전 기체로 동시에 충전시키는 충전 밸브(30)이 장치된 것을 특징으로 하는 차량 바퀴.4. The vehicle wheel according to claim 2 or 3, characterized in that a filling valve (30) is provided for simultaneously filling the tire inner space (6) with granular filler and filling gas. 제2항 내지 제4항에 있어서, 타이어 내부 공간을 충전재 및 충전기체로 동시에 충전시키는 동안 과량의 충전 기체를 방출시키는 통풍 밸브 (31)이 추가로 장치된 것을 특징으로 하는 차량 바퀴.5. The vehicle wheel according to claim 2, further comprising a ventilation valve (31) for releasing excess filler gas while simultaneously filling the tire inner space with the filler and the filler body. 제5항에 있어서, 통풍 밸브(31)이 충전 기체의 압력조절을 할 수 있는 것을 특징으로 하는 차량 바퀴.6. The vehicle wheel according to claim 5, wherein the ventilation valve (31) is capable of regulating the pressure of the filling gas. 제1항에 있어서, 차량 내부 공간(6)이 과립 충전재용의 원환체 형태의 충전 챔버(66) 및 충전 기체용의 또 다른 원환체 형태의 충전 챔버(6a)를 갖고, 이 충전 챔버들이 멤브레인과 유사한 분할벽(8)에 의해 분리되는 것을 특징으로 하는 차량 바퀴.2. The vehicle interior space (6) according to claim 1, wherein the vehicle interior space (6) has a toric-shaped filling chamber (66) for granular filling and another toric-shaped filling chamber (6a) for filling gas. Vehicle wheel, characterized in that separated by a dividing wall (8). 제1항 내지 제7항에 있어서, 사용된 충전재가 고도의 흡음가를 갖는 것을 특징으로 하는 차량 바퀴.The vehicle wheel according to claim 1, wherein the filler used has a high sound absorbency. 제1항 내지 제8항에 있어서, 충전재가 직경 1mm미만의 매우 균일한 입도를 갖는 것을 특징으로 하는 차량 바퀴.The vehicle wheel according to claim 1, wherein the filler has a very uniform particle size of less than 1 mm in diameter. 제1항 내지 제9항에 있어서, 충전재가 20~40kg/㎡범위의 과립밀도를 갖는 것을 특징으로 하는 차량 바퀴.The vehicle wheel according to claim 1, wherein the filler has a granular density in the range of 20-40 kg / m 2. 제1항 내지 제10항에 있어서, 충전재가 거의 난연성인 재료인 것을 특징으로 하는 차량 바퀴.The vehicle wheel according to claim 1, wherein the filler is an almost flame retardant material. 제1항 내지 제7항에 있어서, 충전재가 발포성 플라스틱 재료인 것을 특징으로 하는 차량 바퀴.8. The vehicle wheel according to claim 1, wherein the filler is a foamable plastic material. 제12항에 있어서, 플라스틱 재료가 폴리스티롤 또는 폴리스티롤을 함유하는 플라스틱 재료인 것을 특징으로 하는 차량 바퀴.13. The vehicle wheel according to claim 12, wherein the plastic material is polystyrene or a plastic material containing polystyrene. -과립형이나 모서리가 날카롭지 않고 형태 보존성 및 내열성을 갖는 충전재를 타이어 충전 기체와 혼합시키는 단계; 적당하다면, 충전 기체를 압축시키는 단계; -충전 개구부(30)를 통하여 압축시킨 충전 기체 및 충전재의 혼합물을 불어넣음으로써 타이어 내부 공간(6)을 충전시키는 단계로 구성되는 차량 바퀴의 타이어(10) 및 바퀴 외륜(1)에 의해 형성된 타이어 내부 공간(6)을 충전시키는 방법.-Mixing the filler with the tire filling gas which is not granular or has sharp edges and which has shape preservation and heat resistance; If appropriate, compressing the fill gas; A tire formed by the tire 10 and the wheel outer ring 1 of the vehicle wheel consisting of filling the tire inner space 6 by blowing a mixture of the filling gas and the filler compressed through the filling opening 30. Method of filling the interior space (6). 제14항에 있어서, 타이어 내부 공간(6)을 충전시키는 동안, 방출 밸브(31)을 통하여 방출될 수 있는 과립 충전재는 방출시키지 않고 단지 충전 기체만을 방출시키고 미리 측정된 일정한 충전압을 얻을 수 있는 방식으로 방출 밸브(31)에 의하여 상기 공간이 줄어드는 것을 특징으로 하는 방법.15. The method according to claim 14, wherein during filling of the tire inner space 6, it is possible to release only the filling gas and to obtain a predetermined measured filling pressure without releasing the granular filler which can be released through the discharge valve 31. The space is reduced by means of a release valve (31). 제15항 또는 제16항에 있어서, 타이어 충전 기체를 충전재와 혼합시키는 단계가 과립과 양립하는 충전재를 제공하기 위하여 발포성 플라스틱 재료를 발포시키는 단계에 의하여 진행되는 것을 특징으로 하는 방법.17. The method of claim 15 or 16, wherein mixing the tire fill gas with the filler proceeds by foaming the expandable plastic material to provide a filler that is compatible with the granules. 차량 바퀴의 타이어 내부 공간(6)에 충전재로 사용되는, 과립과 양립하는 발포된 폴라스티롤 또는 폴리스티롤을 함유하는 발포된 플라스틱 재료의 용도.Use of a foamed plastic material containing foamed polystyrene or polystyrol compatible with granules, used as filler in the tire interior space (6) of a vehicle wheel. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960700450A 1993-07-29 1994-07-29 LOW-NOISE VEHICLE WHEEL KR960704726A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEP4325470.5 1993-07-29
DE4325470A DE4325470A1 (en) 1993-07-29 1993-07-29 Low-noise vehicle wheel
PCT/EP1994/002532 WO1995003946A1 (en) 1993-07-29 1994-07-29 Low-noise vehicle wheel

Publications (1)

Publication Number Publication Date
KR960704726A true KR960704726A (en) 1996-10-09

Family

ID=6494001

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960700450A KR960704726A (en) 1993-07-29 1994-07-29 LOW-NOISE VEHICLE WHEEL

Country Status (16)

Country Link
EP (1) EP0711228A1 (en)
JP (1) JPH09503717A (en)
KR (1) KR960704726A (en)
CN (1) CN1132491A (en)
AU (1) AU7497194A (en)
BR (1) BR9407113A (en)
CA (1) CA2167934A1 (en)
CZ (1) CZ23296A3 (en)
DE (1) DE4325470A1 (en)
FI (1) FI960407A0 (en)
HU (1) HUT74216A (en)
NO (1) NO960340L (en)
PL (1) PL313168A1 (en)
SI (1) SI9420044A (en)
SK (1) SK11696A3 (en)
WO (1) WO1995003946A1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19721020A1 (en) * 1997-05-20 1998-11-26 Hanjo Dr Kreitz Space saving spare tyre, e.g. for a car
AU7654900A (en) * 1999-09-21 2001-04-24 Pirelli Pneumatici S.P.A. Method and deadening device for reducing the noise in a vehicle during travel, and tyre wheel provided with said device
US6422655B1 (en) * 1999-11-12 2002-07-23 Continental General Tire, Inc. Tire inside noise absorber
EP1914091B1 (en) * 2001-03-21 2010-06-16 Bridgestone Corporation Method of adjusting pressure of closed cell-containing particles
JP2003118312A (en) * 2001-08-06 2003-04-23 Bridgestone Corp Pressure vessel, method and device for providing internal pressure into pressure vessel, method for supplying pressure vessel, and method for providing service thereafter
DE10214444B4 (en) * 2002-03-30 2004-04-22 Dieter Ortwein Method for filling articles with elastic bodies that can be filled with air or gas, and device for carrying out the method
CN100445110C (en) * 2003-08-04 2008-12-24 横滨橡胶株式会社 Pneumatic tire
CN100446997C (en) * 2003-08-04 2008-12-31 横滨橡胶株式会社 Low noise pneumatic tire
EP1749680A4 (en) * 2004-05-25 2008-03-12 Bridgestone Corp Pneumatic tire
JP4466403B2 (en) * 2005-02-21 2010-05-26 横浜ゴム株式会社 Low noise pneumatic tire
US7793694B2 (en) 2005-03-14 2010-09-14 Bridgestone Corporation Safety tire and hollow ring body
JP4507970B2 (en) * 2005-04-25 2010-07-21 横浜ゴム株式会社 Low noise pneumatic tire
JP4522958B2 (en) * 2006-03-09 2010-08-11 横浜ゴム株式会社 Tire noise reduction device and pneumatic tire
US8746302B2 (en) 2009-07-02 2014-06-10 GM Global Technology Operations LLC Low noise run-flat tires
CN103879232A (en) * 2012-12-21 2014-06-25 黄国栋 Safe tire
DE102015212871A1 (en) * 2015-07-09 2017-01-12 Continental Reifen Deutschland Gmbh Vehicle wheel with a sound-absorbing means and method for introducing the agent into the vehicle wheel
TWI741200B (en) * 2018-07-20 2021-10-01 正新橡膠工業股份有限公司 Tire noise reduction device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1008598B (en) * 1955-04-30 1957-05-16 Bayerische Motoren Werke Ag Dampers for motor vehicle tires, especially for tubeless tires
US3331423A (en) * 1965-06-11 1967-07-18 Joel B Guin Automobile tires
DE1579214A1 (en) * 1966-12-22 1970-04-30 Continental Gummi Werke Ag Process for the production of pneumatic tires with a porous or cellular filling
US3450170A (en) * 1967-06-21 1969-06-17 Keith M Andersen Method of and means for filling pneumatic tires with comminuted elastic material
DE6945600U (en) * 1969-11-25 1970-10-22 Winkelmann Hans-Georg MOTOR VEHICLE AND BICYCLE TIRES.
FR2278512A1 (en) * 1973-12-21 1976-02-13 Michelin & Cie IMPROVEMENTS TO TIRE PACKAGES
DE2442917A1 (en) * 1974-09-07 1976-03-18 Gresch Guenter Vehicle pneumatic tubeless tyre - has upper tyre section containing air inflatable sponge filling
FR2308517A2 (en) * 1975-04-22 1976-11-19 Michelin & Cie Lubricated expanded polystyrene particles for filling tyres - sized for direct filling and with some heat volatile lubricant
DE2719163A1 (en) * 1977-04-29 1978-11-02 Dieter Ortwein Pneumatic tyre which is serviceable when punctured - contains elastic packing esp. of air-filled balls introduced through inflating valve
DE3013367A1 (en) * 1980-04-05 1981-10-08 Erich 6000 Frankfurt Hartmann Automobile safety tyre is pressure filled with small spheres - of rubber or plastics pref. self bonding together to prevent escape

Also Published As

Publication number Publication date
EP0711228A1 (en) 1996-05-15
BR9407113A (en) 1996-09-03
NO960340L (en) 1996-03-26
WO1995003946A1 (en) 1995-02-09
NO960340D0 (en) 1996-01-26
SK11696A3 (en) 1996-10-02
FI960407A (en) 1996-01-29
CZ23296A3 (en) 1996-07-17
JPH09503717A (en) 1997-04-15
HU9600156D0 (en) 1996-03-28
FI960407A0 (en) 1996-01-29
HUT74216A (en) 1996-11-28
CN1132491A (en) 1996-10-02
CA2167934A1 (en) 1995-02-09
PL313168A1 (en) 1996-06-10
SI9420044A (en) 1996-08-31
DE4325470A1 (en) 1995-02-02
AU7497194A (en) 1995-02-28

Similar Documents

Publication Publication Date Title
KR960704726A (en) LOW-NOISE VEHICLE WHEEL
AU576752B2 (en) Constant pressure device
US5529824A (en) Filler body as molded part for sealing poorly accessible hollow spaces
EP3335769B1 (en) Inflatable articles that provide long term inflation and pressure control
CN105829145B (en) Tire with self sealss wall and low noise level
JPS61119895A (en) Vacuum heat-insulating unit and manufacture thereof
CN111560133A (en) Acoustic adjusting material, filling method, sound production device and electronic equipment
US20220221099A1 (en) Vacuum insulated refrigerator structure with feature for controlling deformation and improved air withdrawal
US20090026006A1 (en) Foaming liquid material and use thereof for reducing noise in mounted tires
CN111560145A (en) Acoustic adjusting material, filling method, sound production device and electronic equipment
EP3224064B1 (en) Tyre comprising a foam material for acoustic absorption
WO1995003946B1 (en) Low-noise vehicle wheel
US3987134A (en) Manufacture of foamed compartmented structures
JPH04254203A (en) Pneumatic tire
US5794287A (en) Water bag of a water bed
JPS6412976A (en) Sound-proof structure of automobile pillar
JPS59137777A (en) Heat-insulator pack
EP1132421A3 (en) Polyolefin foam beads having high density crust and method for manufacturing the same
JP2973038B2 (en) Radio wave absorber
JP3238938U (en) acoustically effective parts for automobiles
JPS5923223B2 (en) Inflated and pressurized ball for reduced noise and long-term pressure retention
JPS6149557B2 (en)
JPH08132817A (en) Punctureless tube
JPS58171925A (en) Foamed resin molded object
JPH05346200A (en) Method for manufacturing gas cylinder

Legal Events

Date Code Title Description
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid