# US 10,945,464 B2 · Electronic smoking device with a variable-volume liquid reservoir

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,945,464 B2
- Document ID: US10945464B2
- Status: Granted
- Kind: B2
- Application number: 15/771,081
- Filed: 2016-10-28
- Published: 2018-09-06
- Granted: 2021-03-16
- Earliest claimed: 2015-10-28
- Assignees: Fontem Holdings 1 B.V.
- Applicants: Fontem Holdings 1 B.V.
- Inventors: Neha Daryani; Lutz Deichmann
- Web page: https://patentgrep.com/patent/US10945464B2

## CPC

- A24F 40/48: Fluid transfer means, e.g. pumps
- A24F 40/42: Cartridges or containers for inhalable precursors
- A24F 40/485: Valves; Apertures
- A24F 40/10: Devices using liquid inhalable precursors
- A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06)

## Abstract

There is provided an electronic smoking device (10; 110; 210; 310) comprising a power supply (18), a liquid reservoir (34; 34; 234; 334) storing a liquid, and an atomizer (26). The atomizer (26) is adapted to atomize the liquid stored in the liquid reservoir (34; 34; 234; 334) when operated by the power supply (18). The liquid reservoir (34; 34; 234; 334) comprises a first chamber (40) storing the liquid, which first chamber (40) has a variable volume that is reducible and non-increasable.

## Claims

### Claim 1

An electronic smoking device comprising:
a power supply;
a liquid reservoir configured for storing a liquid, wherein the liquid reservoir comprises a chamber for storing the liquid, and wherein the chamber has a variable volume that is reducible and non-increasable, wherein the liquid reservoir comprises a hollow cylindrical body including the first chamber;
a piston inserted into an open end of the hollow cylindrical body, wherein the piston is configured to be moved into the hollow cylindrical body to reduce the volume of the chamber, and wherein the piston is mechanically connected with a blocking unit that is configured to prevent movement of the piston out of the cylindrical hollow body, the blocking unit including a stepped portion on an inner wall of the cylindrical hollow body, wherein the step portion engages with a biased blocking element that protrudes from the piston; and
an atomizer adapted to atomize the liquid stored in the liquid reservoir when operated by the power supply.

### Claim 2 (depends on 1)

The electronic smoking device of claim 1, wherein the chamber communicates with an outlet opening.

### Claim 3 (depends on 2)

The electronic smoking device of claim 2, wherein the outlet opening is configured to let pass liquid when the pressure in the chamber exceeds a predetermined threshold value.

### Claim 4 (depends on 2)

The electronic smoking device of claim 2, wherein the outlet opening communicates with a unidirectional valve.

### Claim 5 (depends on 1)

The electronic smoking device of claim 1, wherein the inlet opening is connected to a pressure source.

### Claim 6 (depends on 5)

The electronic smoking device of claim 5, wherein a unidirectional valve is arranged between the inlet opening and the pressure source.

### Claim 7

A liquid reservoir portion for an electronic smoking device, the liquid reservoir portion comprising:
a first chamber for storing the liquid, and wherein the first chamber has a variable volume that is reducible and non-increasable, and wherein, wherein the liquid reservoir comprises a hollow cylindrical body including the first chamber; and
a piston inserted into an open end of the hollow cylindrical body, wherein the piston is configured to be moved into the hollow cylindrical body to reduce the volume of the first chamber, and wherein the piston is mechanically connected with a blocking unit that is configured to prevent movement of the piston out of the cylindrical hollow body, the blocking unit including a stepped portion on an inner wall of the cylindrical hollow body, wherein the step portion engages with a biased blocking element that protrudes from the piston.

### Claim 8 (depends on 1)

The electronic smoking device of claim 1, wherein the fluid is a liquid.

### Claim 9 (depends on 1)

The electronic smoking device of claim 1, wherein the bias blocking element is spring-biased to protrude from the piston.

### Claim 10 (depends on 7)

The liquid reservoir portion of claim 7, wherein the bias blocking element is spring-biased to protrude from the piston.