EP 3904698 A1 20211103 - LIGHTWEIGHT COMPOSITE OVERWRAPPED ACCUMULATORS
Title (en)
LIGHTWEIGHT COMPOSITE OVERWRAPPED ACCUMULATORS
Title (de)
MIT LEICHTGEWICHTIGEM VERBUNDSTOFF UMWICKELTE AKKUMULATOREN
Title (fr)
ACCUMULATEURS ENVELOPPÉS COMPOSITES LÉGERS
Publication
Application
Priority
US 202016864030 A 20200430
Abstract (en)
The present invention provides lightweight high-pressure accumulators that avoids diaphragm failure observed in conventional diaphragm accumulators. Lightweight high-pressure composite overwrapped accumulators of the invention are made from a plurality of hollow casings that are mated to form an accumulator housing. The accumulator housing is overwrapped with a composite material to provide additional mechanical strength and structural integrity. More significantly, the accumulators of the invention includes a plurality of annular grooves and a plurality of bulb on the flexible diaphragm such that the plurality of bulbs on the flexible diaphragm are placed in the plurality of annular grooves that are formed between the first and the second hollow casing. In this manner, diaphragm failure is significantly reduced or even completely eliminated during repeated high pressure charge/discharge cycle of the accumulator.
IPC 8 full level
F15B 1/10 (2006.01); F15B 1/12 (2006.01); F15B 1/08 (2006.01)
CPC (source: EP)
F15B 1/106 (2013.01); F15B 1/125 (2013.01); F15B 1/086 (2013.01); F15B 2201/205 (2013.01); F15B 2201/21 (2013.01); F15B 2201/3151 (2013.01); F15B 2201/3154 (2013.01); F15B 2201/3156 (2013.01); F15B 2201/3157 (2013.01); F15B 2201/4053 (2013.01); F15B 2201/4056 (2013.01); F15B 2201/605 (2013.01)
Citation (search report)
- [Y] EP 2202412 A1 20100630 - HYDAC TECHNOLOGY GMBH [DE]
- [Y] WO 2018119481 A1 20180628 - STEELHEAD COMPOSITES LLC [US]
- [Y] US 4162692 A 19790731 - GREER EDWARD M [US], et al
- [Y] US 3256911 A 19660621 - JEAN MERCIER, et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 20195115 A 20200908