Richard S Lehman

US Patent:

6394223, May 28, 2002

Filed:

Jun 23, 2000

Appl. No.:

09/599515

Inventors:

Richard W. Lehman - Manheim PA

Assignee:

Clair Brothers Audio Enterprises, Inc. - Litiz PA

International Classification:

H05K 500

US Classification:

181152, 181159, 181177, 181187, 381340

Abstract:

A loudspeaker horn, loudspeaker and a loudspeaker system wherein at least one loudspeaker includes a horn composed of a waveguide, a plurality of throats acoustically coupled to a single waveguide at their mouths and to respective drivers of a plurality of drivers at their inlets. The axis of the throats form an arc in the plane of the long axis of the waveguide to optimize energy distribution in this plane.

US Patent:

55937926, Jan 14, 1997

Filed:

Jun 25, 1993

Appl. No.:

8/082317

Inventors:

Ernest G. Farrier - Winston-Salem NC
Joseph J. Chiou - Clemmons NC
Richard L. Lehman - Franklin Park NJ
Chandra K. Banerjee - Pfafftown NC

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

H01M 632
C22C 2300

US Classification:

429 8

Abstract:

Electrochemical heat sources, materials used to make electrochemical heat sources and methods of forming electrochemical heat sources are disclosed. The electrochemical heat sources includes at least two metallic agents capable of interacting electrochemical with one another, such as magnesium and iron or nickel. The metallic agents may be provided in a variety of forms, including a frozen melt, a bimetallic foil, wire of a first metal wrapped around strands of a different metal, and a mechanical alloy. The metallic agents may be in the form of a powder filling a straw, or small particles extruded with a binder or pressed to form a rod. The powder filled straw or rod may be placed in a heat chamber surrounded by tobacco in a smoking article. An electrolyte solution contacts the metallic agents in the heat chamber to initiate the electrochemical interaction, generating heat which in turn may be used to volatilize nicotine and flavor materials in the tobacco. The heat sources may also be used to heat foods or beverages, in hand warmers, and to heat equipment or materials.

US Patent:

53037200, Apr 19, 1994

Filed:

May 14, 1992

Appl. No.:

7/883030

Inventors:

Chandra K. Banerjee - Pfafftown NC
Richard L. Lehman - Belle Mead NJ
William C. Squires - Winston-Salem NC
Rhonda F. Hayden - Winston-Salem NC
Debra L. Raynor - Greensboro NC

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

A24D 118

US Classification:

131194

Abstract:

The present invention relates to an improved insulating sheet material and to cigarettes and other smoking articles which employ the insulating sheet material as one or more components thereof. The improved insulating material is particularly useful in smoking articles having a fuel element and a physically separate aerosol generating means, e. g. as an insulating member for insulating the fuel element. In general, the sheet material of the present invention is formable without the use of any organic binder and comprises an inorganic fibrous material such as calcium sulfate fibers, calcium sodium phosphate fibers, or mixtures thereof, and a relatively small amount of highly refined cellulose-based fibers such as wood pulp.

US Patent:

52116840, May 18, 1993

Filed:

Jan 10, 1989

Appl. No.:

7/296539

Inventors:

Michael D. Shannon - Lewisville NC
Richard L. Lehman - Belle Mead NJ
James L. Resce - Yadkinville NC
Olivia P. Furin - Clemmons NC
Joseph T. Meers - Fairview Park OH
Dennis M. Riggs - Belews Creek NC
Ernest G. Farrier - Winston-Salem NC

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

A24B 1510
A24B 1516

US Classification:

131352

Abstract:

The present invention is directed to cigarettes and other smoking articles which contain a catalytic composition, preferably as part of the fuel element, that substantially decreases the amount of carbon monoxide contained in the mainstream smoke during smoking. The present invention also relates to the catalyst-containing carbonaceous fuels themselves, as well as to methods of making such carbonaceous fuels. Fuel elements which contain a catalytic composition in accordance with the presentation are especially useful in smoking articles having an aerosol generating means which is physically separate from the fuel element.

US Patent:

51038447, Apr 14, 1992

Filed:

Jun 7, 1990

Appl. No.:

7/534785

Inventors:

Rhonda F. Hayden - Winston-Salem NC
Elbert C. Jones - Sherrill's Ford NC
Jerry W. Lawson - Clemmons NC
Richard L. Lehman - Belle Mead NJ
Patricia F. Perfetti - Winston-Salem NC

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

A24D 100

US Classification:

131365

Abstract:

Cigarettes have a tobacco rod including smokable material circumscribed by a paper wrapper. The paper wrapper includes a cellulosic base web (e. g. , flax and/or wood pulp fibers) and particles of at least one inorganic filler material. The inorganic filler material includes calcium sulfate, and normally fibers of calcium sulfate having an aspect ratio of about 30.

US Patent:

55380204, Jul 23, 1996

Filed:

Jun 22, 1994

Appl. No.:

8/263618

Inventors:

Ernest G. Farrier - Winston-Salem NC
Joseph J. Chiou - Clemmons NC
Richard L. Lehman - Franklin Park NJ
Chandra K. Banerjee - Pfafftown NC
Henry T. Ridings - Lewisville NC
Andrew J. Sensabaugh - Winston-Salem NC

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

A24B 1500

US Classification:

131369

Abstract:

Electrochemical heat sources, materials used to make electrochemical heat sources and methods of forming electrochemical heat sources are disclosed. The electrochemical heat sources includes at least two metallic agents capable of interacting electrochemically with one another, such as magnesium and iron or nickel. The metallic agents may be provided in a variety of forms, including a frozen melt, a bimetallic foil, wire of a first metal wrapped around strands of a different metal, and a mechanical alloy. The metallic agents may be in the form of a powder filling a straw, or small particles extruded with a binder or pressed to form a rod. The powder filled straw or rod may be placed in a heat chamber surrounded by tobacco in a smoking article. An electrolyte solution contacts the metallic agents in the heat chamber to initiate the electrochemical interaction, generating heat which in turn may be used to volatilize nicotine and flavor materials in the tobacco. The heat sources may also be used to heat foods or beverages, in hand warmers, and to heat equipment or materials.

US Patent:

53579844, Oct 25, 1994

Filed:

Apr 2, 1992

Appl. No.:

7/862158

Inventors:

Ernest G. Farrier - Winston-Salem NC
Joseph J. Chiou - Clemmons NC
Richard L. Lehman - Franklin NJ

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

A24B 1500
A24B 1518

US Classification:

131369

Abstract:

A method of making an electrochemical heat source is disclosed. The non-combustion heat source includes at least two metallic agents capable of interacting electrochemically with one another, such as magnesium and iron or nickel. The metallic agents may be provided in a variety of forms, including a frozen melt, a bimetallic foil, wire of a first metal wrapped around strands of a different metal, and a mechanical alloy. The metallic agents may be in the form of a powder filling a straw, or small particles extruded with a binder or pressed to form a rod. The powder filled straw or rod may be placed in a heat chamber surrounded by tobacco in a smoking article. An electrolyte solution contacts the metallic agents in the heat chamber to initiate the electrochemical interaction, generating heat which in turn may be used to volatilize nicotine and flavor materials in the tobacco.

US Patent:

50743210, Dec 24, 1991

Filed:

Sep 29, 1989

Appl. No.:

7/414833

Inventors:

Jeffery S. Gentry - Pfafftown NC
Gary R. Shelar - Greensboro NC
Michael D. Shannon - Lewisville NC
Richard L. Lehman - Belle Mead NJ
James L. Resce - Yadkinville NC
Rhonda F. Hayden - Winston-Salem NC
Olivia D. Furin - Winston-Salem NC
Alan B. Norman - Clemmons NC
Thomas A. Perfetti - Winston-Salem NC

Assignee:

R. J. Reynolds Tobacco Company - Winston-Salem NC

International Classification:

A24D 118

US Classification:

131352

Abstract:

Cigarettes include tobacco-containing smokable material wrapped in a low porosity paper wrapper. The smokable material includes an intimate mixture of tobacco extract, pyrolyzed alpha-cellulose, agglomerated calcium carbonate particles, glycerin and carboxymethylcellulose. Such cigarettes yield low levels of incomplete combustion products and generate low levels of visible sidestream smoke.