Method for producing metal carbide heat sources
First Claim
Patent Images
1. A method of producing metal carbide, comprising the steps of:
- a. mixing a metal species and a carbon source;
b. supplying heat to the mixture in a plurality of intervals; and
c. contacting the mixture with a reducing/carbidizing atmosphere.
1 Assignment
0 Petitions
Accused Products
Abstract
This invention relates to a heat source comprising metal carbide and a method for preparing the same using a reducing/carbidizing atmosphere. The metal carbide heat sources of this invention have ignition temperatures that are substantially lower than conventional carbon particles normally used in carbonaceous heat sources, while at the same time provide sufficient heat to release a flavored aerosol from a flavor bed for inhalation by the smoker. Upon combustion, the heat sources produce substantially no carbon monoxide.
40 Citations
42 Claims
-
1. A method of producing metal carbide, comprising the steps of:
-
a. mixing a metal species and a carbon source; b. supplying heat to the mixture in a plurality of intervals; and c. contacting the mixture with a reducing/carbidizing atmosphere. - View Dependent Claims (3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
-
-
2. A method of producing a heat source comprising a metal carbide, comprising the steps of:
-
a. mixing a metal species and a carbon source; b. combining the mixture from step a) with a binder; c. forming the mixture from step b) into a shape; d. supplying heat to the mixture; and e. contacting the mixture with a reducing/carbidizing atmosphere. - View Dependent Claims (8, 9)
-
- 33. A heat source for use in a smoking article comprising metal carbide, low valency metal oxide and carbon, wherein the heat source is substantially in the form of a rod and has one or more fluid passages therethrough.
-
41. A method of producing metal carbide, comprising the steps of:
-
a. mixing a metal species and a carbon source; b. supplying heat to the mixture at a constant rate of increase; and c. contacting the mixture with a reducing/carbidizing atmosphere.
-
-
42. A smoking article comprising a heat source, wherein the heat source comprises metal carbide, low valency metal oxide and carbon.
Specification