Discharge device with intermediate piece

Patent metadata

Field	Value
Publication number	US-10086394-B2
Application number	US-201515316730-A
Country	US
Kind code	B2
Filing date	Jun 15, 2015
Priority date	Jul 10, 2014
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A discharge device having an actuating handle, a first pump system for conveying a first medium and a second pump system for conveying a second medium. The actuating handle can be moved between an initial position and an end position. The first pump system includes a first pump chamber and a first piston arranged in a displaceable manner in the first pump chamber. The second pump system includes a second pump chamber and a second piston arranged in a displaceable manner in the second pump chamber. The first piston and the second piston can be displaced via the actuating handle in the direction of actuation, and the actuating handle and the first piston are coupled to each other such that the actuating handle and the first piston can be displaced relative to each other in a direction of actuation via a free travel.

First claim

The invention claimed is:

1. A discharge device comprising:
an actuating handle movable a distance between a starting position and an end position, the distance between the starting position and the end position representing a total travel stroke of the actuating handle, the total travel stroke of the actuating handle having a first part and a second part which follows the first part;
a first pump system, actuable by the actuating handle, for conveying a first medium, the first pump system including a first pump chamber and a first piston slidably arranged in the first pump chamber, the first piston being displaceable relative to the first pump chamber in an actuating direction by the actuating handle, the actuating handle and the first piston being coupled together such that the actuating handle and the first piston are displaceable relative to one another in the actuating direction over a free travel distance corresponding to the first part of the total travel stroke, the total travel stroke of the actuating handle being greater than the free travel distance;
a first force element disposed between the first piston and a housing of the first pump chamber, the first piston being displaceable against a first restoring force of the first force element for reducing a volume of the pump chamber;
a second force element disposed between the first piston and the actuating handle and having a second restoring force which holds the first piston and the actuating handle at a distance from one another, the second restoring force being sufficient to permit displacement of the actuating handle and the first piston relative to one another over the free travel distance corresponding to the first part of the total travel stroke such that the first piston during the first part of the total travel stroke is not displaced relative to the first pump chamber and medium in the first pump chamber is not dispensed during the first part of the total travel stroke; and
a second pump system, actuable by the actuating handle, for conveying a second medium, the second pump system including a second pump chamber and a second piston slidably arranged in the second pump chamber, the second piston being displaceable relative to the second pump chamber in an actuating direction by the actuating handle, the actuating handle and the second piston being coupled together such that the second piston during the first and second parts of the total travel stroke is displaced relative to the second pump chamber and medium in the second pump chamber is dispensed during the first and second parts of the total travel stroke, the actuator handle displacing the first piston relative to the first pump chamber against the first restoring force of the first force element during the second part of the total travel stroke such that medium in the first pump chamber and medium in the second pump chamber are both dispensed during the second part of the total travel stroke.

2. The discharge device according to claim 1 , wherein the first restoring force of the first force element is greater than the second restoring force of the second force element.

3. The discharge device according to claim 2 , wherein the second piston is operatively connected to the actuating handle in a play-free manner such that the second piston moves together with the actuating handle over an entirety of the total travel stroke thereof.

4. The discharge device according to claim 3 , further including an intermediate component disposed between the first piston and the actuating handle, the intermediate component interconnecting the first piston and the actuating handle to permit relative movement therebetween during the first part of the total travel stroke of the actuating handle.

5. The discharge device according to claim 4 , wherein the intermediate component is sleeve-shaped and a portion of the actuating handle or a portion of the first piston is slidably disposed and guided within the intermediate component.

6. The discharge device according to claim 4 , wherein the intermediate component is reversibly-deformable, and the actuating handle or the first piston is formed integrally with the intermediate component.

7. The discharge device according to claim 4 , wherein the intermediate component is reversibly-deformable, and the actuating handle or the first piston is coupled with the intermediate component in a substantially play-free manner.

8. The discharge device according to claim 1 , wherein the actuating handle and the first piston are disposed in a spaced-apart manner relative to one another when the actuating handle is in the starting position, and when the actuating handle reaches an end of the first part of the total travel stroke and begins the second part of the total travel stroke, the actuating handle and the first piston move together to cause a displacement of the first piston relative to the first pump chamber such that medium in the first pump chamber is dispensed during the second part of the total travel stroke.

9. A discharge device comprising:
an actuating handle movable a distance between a starting position and an end position, the distance between the starting position and the end position representing a total discharge travel stroke of the actuating handle, the total discharge travel stroke of the actuating handle having a first part and a second part which follows the first part;
a first pump system for conveying a first medium, the first pump system including a first pump chamber and a first piston slidably disposed in the first pump chamber, the first piston being displaceable relative to the first pump chamber by the actuating handle, the actuating handle and the first piston being coupled together such that the actuating handle and the first piston are displaceable relative to one another over a free travel distance corresponding to the first part of the total discharge travel stroke, the total discharge travel stroke of the actuating handle being greater than the free travel distance;
a first force element disposed between the first piston and a housing of the first pump chamber, the first piston being displaceable against a first biasing force of the first force element for reducing a volume of the first pump chamber;
a second force element disposed between the first piston and the actuating handle and having a second biasing force which biases the first piston and the actuating handle away from one another such that the actuating handle and the first piston are spaced apart from one another when the actuating handle is in the starting position, the second biasing force permitting displacement of the actuating handle and the first piston relative to one another over the free travel distance corresponding to the first part of the total discharge travel stroke; and
a second pump system for conveying a second medium, the second pump system including a second pump chamber and a second piston slidably disposed in the second pump chamber, the second piston being displaceable relative to the second pump chamber by the actuating handle, the actuating handle and the second piston being coupled together such that the second piston is displaced relative to the second pump chamber to dispense medium in the second pump chamber during an entirety of the total discharge travel stroke; and
the second biasing force of the second force element is less than the first biasing force of the first force element such that the first piston, during the first part of the total discharge travel stroke, is not displaced relative to the first pump chamber and medium in the first pump chamber is not dispensed and such that the first piston, during the second part of the total discharge travel stroke, is displaced relative to t

Assignees

• Bruder Thomas
• Aptar Radolfzell Gmbh

Inventors

• Bruder Thomas

Classifications

• A45D40/0075

  with dispensing means · CPC title

• A45D40/24

  Casings for two or more cosmetics · CPC title

• B05B11/1097 Primary

  with means for sucking back the liquid or other fluent material in the nozzle after a dispensing stroke · CPC title

• B05B11/1001

  Piston pumps (B05B11/1087, B05B11/1088, B05B11/109 take precedence) · CPC title

• B05B11/1084 Primary

  each liquid or other fluent material being pumped by a separate pump · CPC title