公开(公告)号：US20230175571A1

公开(公告)日：2023-06-08

申请号：US17997541

申请日：2021-04-24

Applicant: Silgan Dispensing Systems Corporation

Inventor： Eelco H. Deman ,  Stefan Koster

IPC: F16F1/373 ,  A47K5/12 ,  F16F1/36 ,  F16F1/44 ,  B05B11/00 ,  F16F1/377 ,  B05B11/10

CPC classification number: F16F1/3732 ,  A47K5/1205 ,  F16F1/3605 ,  F16F1/44 ,  B05B11/0037 ,  F16F1/373 ,  F16F1/377 ,  B05B11/1001 ,  B05B11/1023 ,  B05B11/1076 ,  F16F1/36 ,  B05B11/1047 ,  B05B11/1074

Abstract: A dispensing pump (1000) includes a polymer compression spring (1048), base vents (1060) and a flow baffle (1092). The dispensing pump includes a pump base (1002), and a dispensing head (1004) having a piston stem (1034). The polymer compression spring assembly includes a slotted tubular spring element (1048) and first and second loading cones received at opposing ends of the slotted tubular spring element. The venting ports allow air to escape when capping the container after filling and the flow baffle reduces or prevents the product from being pulled into the pump accumulator before residual air (headspace) has been evacuated from the container during the initial priming strokes.

公开(公告)号：US20240253072A1

公开(公告)日：2024-08-01

申请号：US18564564

申请日：2021-12-27

Applicant: Majesty Packaging System Co., Ltd

Inventor： Peihui Liang ,  Maoyong Zhu ,  Yonglei Zhang ,  Jinkao Liang

IPC: B05B11/10

CPC classification number: B05B11/1001 ,  B05B11/1047 ,  B05B11/1067 ,  B05B11/1074 ,  B05B11/1076

Abstract: Disclosed in the invention is an all-plastic pressing pump comprising: an actuator, an insert, a housing, a container cap, a piston guide, a pump ball, a spring, and a protective cover, made of plastic. The lower end of the piston guide is provided with a slidable sealing part that is inserted into the housing and slidably and sealing connected to the inner wall of the housing. The container cap has a central hole for the piston guide to pass through. A conical frustum sealing part is provided on the piston guide above the slidable sealing part, and the conical frustum sealing part forms a sealed connection with the side wall of the central hole when it bounces up. An air replenishment channel is disposed between the housing and the container cap. A liquid outlet channel and a switch structure are disposed between the actuator and the piston guide, and the switch structure opens the liquid outlet channel when the actuator is pressed down and blocks the liquid outlet channel when the actuator bounces up. A guide sleeve is provided on the top of the container cap and is upwardly sleeved on the outer side of the actuator. An anti-off protrusion is provided at the upper end of the guide sleeve. The actuator is provided with an anti-off hook that is capable of being hooked on the anti-off protrusion. The spring is disposed inside the guide sleeve and is pressed between the top of the actuator and the top of the container cap. The spring is a plastic spring tube with open upper and lower ends and a sealed side, and the structure thereof is simple.

公开(公告)号：US12023695B2

公开(公告)日：2024-07-02

申请号：US17314730

申请日：2021-05-07

Applicant: Dispensing Technologies B.V.

Inventor： Wilhelmus Johannes Joseph Maas ,  Dominicus Jan van Wijk ,  Paulo Nervo ,  Petrus Lambertus Wilhelmus Hurkmans ,  Aaron Haleva

IPC: B05B11/00 ,  A47L11/40 ,  A47L13/22 ,  B05B9/08 ,  B05B11/10 ,  B05B15/62 ,  B29C65/00 ,  B29C65/18 ,  B29C65/74 ,  B29C65/78 ,  B29C65/08 ,  B29C65/16 ,  B29C65/48

CPC classification number: B05B11/0075 ,  A47L11/4088 ,  A47L13/22 ,  B05B9/0883 ,  B05B11/0032 ,  B05B11/1011 ,  B05B11/1038 ,  B05B11/1073 ,  B05B11/1074 ,  B05B11/1076 ,  B05B11/1077 ,  B05B11/1098 ,  B05B15/62 ,  B29C65/18 ,  B29C65/743 ,  B29C65/7802 ,  B29C65/7841 ,  B29C66/0014 ,  B29C66/0342 ,  B29C66/1122 ,  B29C66/4312 ,  B29C66/43121 ,  B29C66/439 ,  B29C66/53262 ,  B29C66/72341 ,  B29C66/81419 ,  B29C66/81465 ,  B29C66/81815 ,  B29C66/8322 ,  B29C66/83221 ,  B29C66/849 ,  B29C65/08 ,  B29C65/16 ,  B29C65/48 ,  B29C66/71 ,  B29C66/71 ,  B29K2023/06 ,  B29C66/71 ,  B29K2023/12 ,  B29C66/71 ,  B29K2067/00 ,  B29C66/71 ,  B29K2077/00 ,  B29C66/71 ,  B29K2083/00

Abstract: In exemplary embodiments of the present invention, various novel dispensing devices can be provided. Such devices can involve a range of sprayer heads and sprayer/foamer systems incorporating such heads. Novel sprayer/foamer heads can include buffers of various types. By using a buffer, a user need not continually be pumping the device in order for the device to be spraying or foaming. In exemplary embodiments of the present invention, such a buffer can be spring loaded, spring loaded combination, elastomeric or gas. In exemplary embodiments of the present invention, the buffer can be in line or adjacent to a piston chamber. If adjacent, it can be connected to the piston chamber with a one way valve, to provide for spray after a downstroke of the piston has been completed, or without, to allow spraying to cease once a user releases the trigger or other actuator. In exemplary embodiments of the present invention, such novel sprayers and foamers can be mounted upside down, in various “Flairomop” devices, used to clean floors or the like. When using a buffer, a piston chamber can be designed to deliver greater amount of liquid per unit time than can be possibly dispensed through the nozzle or nozzles. The fraction of liquid that cannot be sent through the nozzle(s), due to their inherent restriction, can thus be sent to the buffer for dispensing after the piston downstroke has been completed. A volume of the piston chamber, a volume of the buffer, a pressure response of the buffer, the throughput of the nozzle, and the minimum opening pressure of the outlet valve can be arranged to restrict the outlet pressures of liquid droplets exiting the nozzle within a defined range.