EP 3827914 A4 20220105 - BACK-SPRAY SYSTEM AND INJECTION PISTON
Title (en)
BACK-SPRAY SYSTEM AND INJECTION PISTON
Title (de)
RÜCKSPRITZSYSTEM UND EINSPRITZKOLBEN
Title (fr)
SYSTÈME DE RÉTRO-PULVÉRISATION ET PISTON D'INJECTION
Publication
Application
Priority
- US 201862703564 P 20180726
- JP 2019028761 W 20190723
Abstract (en)
[origin: EP3827914A1] A back spray system comprising an injection piston having a plunger tip (26) and a shot rod (24) with a shot rod hole (32) drilled through the length of the rod connecting a lubricating supply to a collar (30) located right directly behind the plunger tip (24). The collar (30) has a predetermined number of collar holes (40) positioned circumferentially about the collar (30) sized and positioned to dispense a precise and uniform amount of lubricant to the space between the plunger tip (24) and the shot sleeve (20). Under the collar (30) is a channel with two drilled holes (38) connected to the shot rod hole (40).
IPC 8 full level
B22D 17/20 (2006.01)
CPC (source: EP US)
B22D 17/203 (2013.01 - EP US); B22D 17/2038 (2013.01 - EP US)
Citation (search report)
- [XI] US 5048592 A 19910917 - MUELLER ANDRE [CH]
- [XI] US 4899804 A 19900213 - HAMMERER NORMAN L [US]
- [XI] US 2015273574 A1 20151001 - FURUTANI KOUJI [JP], et al
- [XI] US 5350007 A 19940927 - MIKI ISAO [JP], et al
- See references of WO 2020022304A1
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
DOCDB simple family (publication)
EP 3827914 A1 20210602; EP 3827914 A4 20220105; JP 6852227 B2 20210331; JP WO2020022304 A1 20210107; MX 2021000911 A 20210331; US 2021162492 A1 20210603; WO 2020022304 A1 20200130
DOCDB simple family (application)
EP 19842248 A 20190723; JP 2019028761 W 20190723; JP 2020532399 A 20190723; MX 2021000911 A 20190723; US 201917261942 A 20190723