US 12,030,069 B2
Dispenser pumps and dispensers
Simon Christopher Knight, Bridgend (GB); Gaurang Mittal, Uttar Pradesh (IN); Ashish Singh, Uttar Pradesh (IN); and Pratham Pal, Uttar Pradesh (IN)
Assigned to RIEKE PACKAGING SYSTEMS LIMITED, (GB)
Filed by RIEKE PACKAGING SYSTEMS LIMITED, Leicestershire (GB)
Filed on Aug. 15, 2022, as Appl. No. 17/887,774.
Application 17/887,774 is a continuation of application No. 17/208,275, filed on Mar. 22, 2021, granted, now 11,413,638.
Application 17/208,275 is a continuation of application No. 16/615,907, granted, now 10,953,421, issued on Mar. 23, 2021, previously published as PCT/EP2018/063838, filed on May 25, 2018.
Claims priority of application No. 201741018391 (IN), filed on May 25, 2017.
Prior Publication US 2023/0036689 A1, Feb. 2, 2023
Int. Cl. B05B 11/00 (2023.01); B05B 11/10 (2023.01)
CPC B05B 11/106 (2023.01) [B05B 11/0044 (2018.08); B05B 11/1001 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A reciprocating pump, attachable to a container neck, the pump comprising:
a plunger having: i) a head with a dispensing nozzle and at least one flexible fin extending along the axis, and ii) a stem extending along the axis and including locking threads disposed on an outer surface of the stem at an upper portion where the stem attaches to the head;
a body having: a) cylinder with a radial flange positioned above a cylindrical body defining a pumping chamber, and b) an annular body insert, coaxially received within the flange and extending axially toward the pumping chamber, including a conically angled upper facing having a slot and cooperating locking threads positioned along an inner facing of an aperture formed in the annular body insert;
a biasing member urging the plunger axially away from the body;
wherein a bottom edge of the fins is angled to conform to an angled surface forming the slot so as to receive and restrain the flexible fin; and
wherein the plunger and the body are configured to rotate relative to one another so as to engage the locking threads to the cooperating locking threads in order to prevent the plunger from extending away from the body.