EP 3909885 A4 20220420 - EXTERNAL SPRING PUMP HAVING LEFT AND RIGHT LOCK STRUCTURE
Title (en)
EXTERNAL SPRING PUMP HAVING LEFT AND RIGHT LOCK STRUCTURE
Title (de)
EXTERNE FEDERPUMPE MIT LINKER UND RECHTER VERRIEGELUNGSSTRUKTUR
Title (fr)
POMPE À RESSORT EXTERNE AYANT UNE STRUCTURE DE VERROUILLAGE GAUCHE ET DROITE
Publication
Application
Priority
- CN 202010202319 A 20200320
- CN 2020082935 W 20200402
Abstract (en)
[origin: US2021291212A1] The invention discloses a pump with a left and right locking structure and an external spring, which includes a pump body extending into a bottle body, a pump chamber is arranged on the pump body, a locking bottle cover is connected to the pump body, a pumping member is arranged in the pump chamber, a locking cover is provided at an inner wall of the pump chamber, a one-way valve is provided at a lower end of the pump chamber, a bent nozzle is provided at an upper end of the pumping member, a liquid guiding pipe capable of extending into the bottle body is arranged on the pump body and located below the one-way valve, the pumping member includes a pump rod, a liquid inlet hole is formed below the pump rod, a piston is sleeved on the pump rod, an air inlet hole is formed in the pump body, a pushing part is arranged on the pump rod, the locking cover is further provided with a limiting protruding block, and a reset spring is arranged between the locking cover and the bent nozzle; and a limiting member capable of preventing the bent nozzle from being pressed downward when the pump rod is rotated by a certain angle is arranged between the pump rod and the locking cover. According to the invention, the bent nozzle can be prevented from being mistakenly pressed in a transportation process by arranging the limiting member, leakage is avoided, meanwhile, the air inlet hole is sealed through cooperation of the piston and the locking cover, and a sealing effect is enhanced.
IPC 8 full level
B05B 11/00 (2006.01)
CPC (source: CN EP US)
B05B 11/0044 (2018.07 - EP); B05B 11/1001 (2023.01 - CN); B05B 11/1023 (2023.01 - EP US); B05B 11/1043 (2023.01 - CN); B05B 11/1047 (2023.01 - EP US); B05B 11/1059 (2023.01 - EP); B05B 11/106 (2023.01 - US); B05B 11/1067 (2023.01 - EP); B05B 11/1074 (2023.01 - EP US); B05B 11/109 (2023.01 - CN)
Citation (search report)
- [X] US 10335816 B1 20190702 - ARMINAK ARMIN [US]
- [X] US 2018304291 A1 20181025 - KNIGHT SIMON CHRISTOPHER [GB]
- [X] CN 105292728 B 20170412
- [X] CN 104609018 A 20150513 - ZHONGSHAN MEIJIESHI PACKAGING PRODUCT CO LTD
- See references of WO 2021184428A1
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)
US 2021291212 A1 20210923; EP 3909885 A1 20211117; EP 3909885 A4 20220420
DOCDB simple family (application)
US 202017268414 A 20200402; EP 20845371 A 20200402