Back to results
US 11,697,613 B2Granted
Open-pore sintered glasses for use in electronic cigarettes
AssigneeSchott AG
InventorsUlrich Peuchert, Norbert Greulich-Hickmann, Philipp Treis, Yvonne Menke, Michael Kluge
Life of this patent
Estimating the term…
Abstract
A sintered body for use as a liquid reservoir in an electronic cigarette, medication administering devices, in thermally heated evaporators for fragrant substances is provided. The sintered body is made of open-pore sintered glass and has a porosity of greater than 50 vol %. The average pore size is in a range from 1 to 450 μm. The glass of the sintered body has a transition temperature Tg of at least 450° C.
Claims27
A liquid reservoir, comprising:
- a sintered body including an open-pore sintered glass with a porosity of >50 vol % and an average pore size in a range from 1 to 450 μm, wherein the open-pore sintered glass comprises glass having a transition temperature of at least 450° C.;
- and an organic carrier liquid adsorbed by the sintered body, wherein the glass comprises (in wt % on an oxide basis):
- SiO2
- 50 to 60
- wt %;
- B2O3
- 8 to 12
- wt %;
- Al2O3
- 8 to 12 wt %;
- and
- BaO
- 20 to 30
- wt %.
11 more elements
A liquid reservoir, comprising:
- a sintered body including an open-pore sintered glass with a porosity of >50 vol % and an average pore size in a range from 1 to 450 μm, wherein the open-pore sintered glass comprises glass having a transition temperature of at least 450° C.;
- and an organic carrier liquid adsorbed by the sintered body, wherein the glass comprises (in wt % on an oxide basis):
- SiO2
- 58 to 65
- wt %;
- B2O3
- 6 to 10.5
- wt %;
- Al2O3
- 14 to 25
- wt %;
- MgO
- 0 to 5
- wt %;
- CaO
- 0 to 9
- wt %;
- BaO
- 0 to 8
- wt %;
- SrO
- 0 to 8
- wt %;
- ZnO
- 0 to 2 wt %;
- and
- a total of MgO, CaO, and BaO is 8 to 18 wt %.
24 more elements
An evaporator unit, consisting of:
- a sintered body as a liquid reservoir, the sintered body including an open-pore sintered glass with a porosity of >50 vol % and an average pore size in a range from 1 to 450 μm, wherein the open-pore sintered glass comprises glass having a transition temperature of at least 450° C.;
- and a heating element.
An evaporator unit, comprising:
- a sintered body as a liquid reservoir, the sintered body including an open-pore sintered glass with a porosity of >50 vol % and an average pore size in a range from 1 to 450 μm, wherein the open-pore sintered glass comprises glass having a transition temperature of at least 450° C.;
- and
- a heating element comprising a device selected from the group consisting of a metal foil, a metal wire, and an electrically conductive coating,
- herein at least a portion of the metal foil, the metal wire, and/or the electrically conductive coating of the heating element is directly disposed on the sintered body.
1 more element
Dependencies are inferred from the claim text.