Harry E Russell

US Patent:

20050009683, Jan 13, 2005

Filed:

Jul 7, 2003

Appl. No.:

10/613939

Inventors:

James Hamilton - Parker CO, US
Harry Russell - Evergreen CO, US

International Classification:

C03C013/00
C03C013/06
C03C003/087

US Classification:

501035000, 501036000, 501070000

Abstract:

Provided is a glass composition useful in preparing fiberglass, with the composition comprising SiOin an amount ranging from 52-62 weight percent: BOin an amount ranging from 3.5-5.5 weight percent; CaO in an amount ranging from 18-25 weight percent; MgO in an amount ranging from 0.5-4 weight percent; AlOin an amount ranging from 10-15 weight percent; and NaO in an amount ranging from 0.25-2 weight percent. The glass composition has an HTV of no greater than 2300 F. and a liquidus temperature at least F. less than the HTV temperature. The composition allows one to realize costs savings associated with lower batch costs and abatement requirements, without significantly increasing the energy required for melting the glass, reducing fiberization efficiency, or requiring the development of new bushing technology.

US Patent:

62944916, Sep 25, 2001

Filed:

May 13, 1999

Appl. No.:

9/311511

Inventors:

Ralph Michael Fay - Lakewood CO
Jeffrey Canon Townsend - Highlands Ranch CO
Foster Laverne Harding - Castle Rock CO
Jon Frederick Bauer - Castle Rock CO
Harry Hand Russell - Evergreen CO
Xiaojie Xu - Littleton CO

Assignee:

Johns Manville International, Inc. - Denver CO

International Classification:

C03C 1300
C03C 1306

US Classification:

501 35

Abstract:

An insulation product especially suited for use as an aircraft insulation includes a blanket of randomly oriented entangled glass fibers bonded together by a thermosetting binder and having a mean diameter of about 1+/-0. 25 microns. The blanket has a density between about 0. 25 and about 1. 5 pounds per cubic foot and a thickness between about 0. 35 inches and about 2. 0 inches. The blanket, exclusive of anything else, has an average machine direction tensile strength of at least 0. 6 pounds/inch of blanket width and an average cross machine direction tensile strength of at least 0. 3 pounds/inch of blanket length; a transverse airflow resistance between about 300 Rayls and about 1800 Rayls; and a thermal conductivity equal to or less than about 0. 32 BTU-in/hr-ft. sup. 2 -. degree. F. The glass fibers of the blanket have a biodissolution rate in excess of 150 ng/cm. sup. 2 /hr.