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1. WO2002006680 - ACCUMULATOR

Publication Number WO/2002/006680
Publication Date 24.01.2002
International Application No. PCT/JP2001/006177
International Filing Date 17.07.2001
Chapter 2 Demand Filed 09.01.2002
IPC
B32B 1/08 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
1Layered products essentially having a general shape other than plane
08Tubular products
B32B 27/34 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
34comprising polyamides
F15B 1/12 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
1Installations or systems with accumulators; Supply reservoir or sump assemblies
02Installations or systems with accumulators
04Accumulators
08using a gas cushion; Gas charging devices; Indicators or floats therefor
10with flexible separating means
12attached at their periphery
CPC
B32B 1/08
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
1Layered products having a general shape other than plane
08Tubular products
B32B 2250/40
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2250Layers arrangement
40Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
B32B 2377/00
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2377Polyamides
B32B 25/08
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
25Layered products comprising ; a layer of; natural or synthetic rubber
04comprising rubber as the main or only constituent of a layer, ; which is; next to another layer of ; the same or of; a ; different material
08of synthetic resin
B32B 25/18
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
25Layered products comprising ; a layer of; natural or synthetic rubber
18comprising butyl or halobutyl rubber
B32B 2597/00
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2597Tubular articles, e.g. hoses, pipes
Applicants
  • NOK CORPORATION [JP]/[JP] (AE, AG, AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, BZ, CA, CF, CG, CH, CI, CM, CN, CO, CR, CU, CY, CZ, DE, DK, DM, DZ, EE, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GW, HR, HU, ID, IE, IL, IN, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MC, MD, MG, MK, ML, MN, MR, MW, MX, MZ, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW)
  • YOSHIHARA, Hisao [JP]/[JP] (UsOnly)
  • KURITA, Yoshiyuki [JP]/[JP] (UsOnly)
  • SASAKI, Kennji [JP]/[JP] (UsOnly)
  • YOSHIDA, Minoru [JP]/[JP] (UsOnly)
Inventors
  • YOSHIHARA, Hisao
  • KURITA, Yoshiyuki
  • SASAKI, Kennji
  • YOSHIDA, Minoru
Agents
  • NOMOTO, Yoichi
Priority Data
2000-21681118.07.2000JP
2000-36964605.12.2000JP
2001-19594828.06.2001JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) ACCUMULATOR
(FR) ACCUMULATEUR
Abstract
(EN) An accumulator installed in the piping of equipment and temporarily accumulating a pressure in a pipe flow path or absorbing, by a pump, the pulsation of a fluid pressure generating in the piping, wherein a bladder (3) is formed in a laminated structure having, for example, a center elastic layer (321), gas shielding layers (322) on the outside thereof, external elastic layers (323) on the outside of the gas shielding layers and the center elastic layer (321), gas shielding layers (322), and external elastic layers (323) are formed of polyamide resin, and the gas shielding layers (322) are formed so that the bending elastic modulus thereof is higher than the bending elastic moduli of the center elastic layers (321) and external elastic layers (323), whereby the durability of the bladder (3) against a repeated bending and stretching operation in the low temperature environment of 0 ° or below can be increased and the volume of cushion gas in a gas chamber can be effectively prevented from decreasing.
(FR) Accumulateur monté dans une canalisation et accumulant temporairement une pression dans un trajet d'écoulement ou absorbant, au moyen d'une pompe, la pulsation d'une pression hydraulique générée dans la canalisation. Ceci consiste en une vessie (3) constituée par une structure laminée possédant, par exemple, une couche centrale élastique (321), des couches de protection contre le gaz (322) situées à l'extérieur de ladite structure, des couches extérieures élastiques (323) situées à l'extérieur des couches de protection et de la couche centrale élastique (321). Les couches de protection contre le gaz (322) et les couches extérieures élastiques (323) sont constituées par une résine de polyamide et les couches de protection contre le gaz (322) sont conçues de façon que leur module d'élasticité à l'incurvation est supérieur à celui des couches centrales élastiques (321) et des couches extérieures élastiques (323). Ceci permet de prolonger la résistance de la vessie (3) contre une incurvation et une élongation répétées dans un milieu à basse température égale ou inférieure à 0 °C et d'empêcher efficacement la diminution du volume de gaz résiduel dans une chambre à gaz.
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