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1. (WO2017153491) FOAM DISPENSERS

Pub. No.:    WO/2017/153491    International Application No.:    PCT/EP2017/055480
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Thu Mar 09 00:59:59 CET 2017
IPC: B05B 7/00
B05B 11/00
Applicants: RIEKE PACKAGING SYSTEMS LIMITED
Inventors: KNIGHT, Simon Christopher
Title: FOAM DISPENSERS
Abstract:
A foam dispenser has a pump body and a sprung plunger (2). A one-piece moulded cylinder component (31) comprises a larger diameter portion (32) for an air cylinder and a smaller diameter portion (33) for a liquid cylinder. The plunger (2) carries respective pistons (22,21) movable in the air cylinder and liquid cylinder to pump air and liquid through valved outlets to a mixing chamber (8) in the plunger for foam production. The liquid cylinder has a discrete inlet piece (9) including an inlet valve. The liquid outlet valve is operated by a valve pin (25) connected to a valve pin retainer (39) which is formed integrally as a one-piece moulding with the cylinder component (31).