Cartridge for pump assembly carrying rasp

Patent metadata

Field	Value
Publication number	US-10433681-B2
Application number	US-201816188536-A
Country	US
Kind code	B2
Filing date	Nov 13, 2018
Priority date	Aug 29, 2014
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

A pump assembly for generating and dispensing of particles of a solid material with or without dispensing of a fluid. The pump assembly preferably includes a fluid pump which in a cycle of operation draws the fluid through a fluid inlet and dispenses the fluid out a fluid outlet. The pump assembly carries a block of the solid material coalesced together and a rasp member, which during the cycle of operation, moves relative the rasp in engagement with the block whereby the rasp member disengages particles of the solid material from the block which particles drop under gravity downwardly adjacent the fluid outlet, for example, onto a user's hand as in the case that the fluid is a hand cleaning fluid and the solid is a solid soap.

First claim

We claim:

1. A pump assembly for dispensing of a fluid and of particles of a solid material comprising:
a fluid pump which in a cycle of operation draws the fluid through a fluid inlet and dispenses the fluid out a fluid outlet,
a block of the solid material,
a pump housing body,
the fluid pump including a movable member mounted to the body for reciprocal movement relative the body parallel to an axis in the cycle of operation to draw and dispense the fluid,
the block received axially between the body and the movable member presenting a first axially directed surface directed toward the movable member,
a rasp member comprising a resilient finger member having a first end and a distal end,
the first end of the finger member coupled to the movable member to move axially relative the axis with the movable member,
the finger member extending from the first end axially away from the first end and radially outwardly from the axis to the distal end which carries an axially directed rasp surface directed axially toward the first axially directed surface of the block in opposition to the first axially directed surface of the block,
the axially directed rasp surface and the first axially directed surface of the block biased axially into engagement with each other,
in the cycle of operation, when the body and the movable member move axially toward each other, the finger member is axially compressed between the first axially directed surface of the block and the movable member and the finger member resiliently deflects between the first end and the distal end against an inherent bias of the finger member reducing the axial length between the first end and the distal end and moving the distal end radially outwardly,
in the cycle of operation, when the body and the movable member move axially away each other, under the inherent bias of the finger member, the finger member deflects between the first end and the distal end increasing the axial length between the first end and the distal end and moving the distal end radially inwardly,
wherein during the cycle of operation the rasp surface in engagement with the first axially directed surface of the block moves radially relative the first axially directed surface of the block disengaging particles of the solid material from the block at a location that the particles drop under gravity downwardly adjacent the fluid outlet.

2. A pump assembly as claimed in claim 1 wherein the body carries a collar for securing the pump assembly to an opening to a container comprising a reservoir for the fluid.

3. A pump assembly as claimed in claim 2 wherein a fluid inlet of the fluid pump is in communication through the collar with the fluid in the reservoir.

4. A pump assembly as claimed in claim 3 wherein the fluid pump is selected from a piston pump and a diaphragm pump.

5. A pump assembly as claimed in claim 1 wherein the body carrying a solid material cage enclosing the block separated from the fluid, the cage including a solid material discharge tube guiding the particles discharged from the block by the rasp member to a solid material discharge outlet proximate the fluid outlet while maintaining the particles separated from the fluid until exiting from the solid material discharge outlet.

6. A pump assembly as claimed in claim 1 wherein the fluid pump is a piston pump,
the body carries a chamber-forming center tube coaxially about the axis defining a fluid chamber therein,
the fluid chamber having a closed axially inner end and an open outer end,
the movable member comprising a piston coaxially slidable received in the fluid chamber with an outer end of the piston extending outwardly of the open outer end of the fluid chamber to the discharge outlet at the outer end of the piston,
the piston coaxially slidable along the axis within the fluid chamber between an extended position and a retracted position and movable in the cycle of operation between the extended position and the retracted position to draw the fluid into the fluid chamber and to discharge the fluid out the discharge outlet.

7. A pump assembly as claimed in claim 6 wherein:
the block is an annular member with a central opening therethrough,
the block disposed coaxially about the axis annularly and radially outwardly about the chamber-forming tube with the first axially directed surface of the block directed axially outwardly,
the first end of the finger member fixedly coupled to the piston proximate the outer end of the piston with the finger member extending from the first end axially away from the first end and radially outwardly of the chamber-forming tube to the distal end placing the axially directed rasp surface in engagement with the first axially directed surface of the block.

8. A pump assembly as claimed in claim 7 wherein:
the body has an annular end wall coaxial about the axis that carries a chamber-forming center tube,
the end wall extending radially outwardly from the center tube,
the block disposed axially outwardly of the end wall.

9. A pump assembly as claimed in claim 8 wherein:
the block having a second axially directed surface directed axially inwardly,
a spring member disposed between the end wall and the second axially directed surface of the block biasing the block axially outwardly into engagement with the axially directed rasp surface on the distal end of the finger member.

10. A pump assembly as claimed in claim 8 wherein:
the annular end wall extending radially outwardly from the center tube to a circumferential outer end of the annular end wall,
a chute tube extending coaxially from the circumferential outer end of the annular end wall axially outwardly to an open annular particle discharge outlet coaxially about the discharge outlet at the outer end of the piston,
an annular compartment defined radially between the chute tube and the chamber-forming center tube within which the annular block is coaxially received.

11. A pump assembly as claimed in claim 10 wherein:
the axially directed rasp surface is directed axially inwardly in engagement with the first axially directed surface of the block,
openings through the finger member over the distal end of the finger member sized to permit particles of the of the solid material disengaged by the rasp surface to pass through the finger member into the annular compartment radially outwardly of the finger member,
the chute tube guiding particles of the solid material in the annular compartment radially outwardly of the finger member to pass under gravity outwardly in the chute tube to the annular particle discharge outlet annularly outwardly of the finger member and the piston.

12. A pump assembly as claimed in claim 7 including a plurality of said finger members secured spaced from each circumferentially about the piston.

13. A pump assembly as claimed in claim 11 including a plurality of said finger members secured spaced from each circumferentially about the piston, each finger member providing the rasp surface over a partial circumferential segment of the first axially directed surface of the block.

14. A pump assembly as claimed in claim 1 in combination with a container containing the fluid, wherein the body is secured to an opening to the container providing for communication of the fluid in the container to the fluid pump.

15. A pump assembly as claimed in claim 1 including a particle discharge chute receiving the particles disengaged from the block and directing the particles under gravity downwardly to a particle exitway adjacent the discharge outlet.

16. A dispenser as claimed in

Assignees

• Op Hygiene Ip Gmbh

Inventors

• Ophardt Heiner
• Jones Andrew
• Shi Zhenchun

Classifications

• A47K5/12 Primary

  for liquid or pasty soap · CPC title

• A47K5/1207

  Dispensing from the bottom of the dispenser with a vertical piston · CPC title

• B05B11/0078

  Arrangements for separately storing several components (arrangements for pumping several liquids or other fluent materials from several containers B05B11/1081) · CPC title

• A47K5/1208

  by means of a flexible dispensing chamber · CPC title

• C11D17/00

  Detergent materials or soaps characterised by their shape or physical properties (shaping soap C11D13/14) · CPC title