Fired clay pillows and structures made therewith
AssigneeMinnesota Mining and Manufacturing Company
InventorGeorge C. Harrison
Life of this patent
Estimating the term…
Abstract
Unique fired clay pillows are described which are useful for a variety of purposes. They have particular utility in structural applications when they are first rendered impervious, mixed with a hardenable binder, and then cast into a mold or form of desired size and configuration where the binder is hardened, thereby producing a consolidated pillow structure having a high degree of void space. The consolidated pillow structure is fire-resistant, weather-resistant, rot-proof, and exhibits good sound absorption and thermal insulation properties.
Claims39
An article comprising a fired clay pillow having a tubularly-shaped body section whose ends are flattened closed, wherein the external surface of said pillow has been rendered impervious by means of a non-tacky coating;
- wherein the outside diameter of said body section is in the range of about 3 to 10 millimeters and the wall thickness of said body section is about 0.2 to 1 millimeter;
- wherein the length of said pillow is about 2.5 to 4 times as great as said outside diameter, and wherein said flattened ends are flared outwardly so as to project beyond said body section.
An article comprising a plurality of fired clay pillows whose external surface has been rendered impervious by means of a non-tacky coating, said pillows being bonded together at their points of contact by means of a binder, said pillows each having a tubularly-shaped body section whose ends are flattened closed and flared outwardly so as to project beyond said body section;
- wherein the outside diameter of said body section is in the range of about 3 to 10 millimeters and the wall thickness of said body section is about 0.2 to 1 millimeter;
- and wherein the length of said pillows is about 2.5 to 4 times as great as said outside diameter;
- said article having at least about 40% void space.
An article comprising a fired clay pillow having a tubularly-shaped body section whose ends are flattened closed;
- wherein the outside diameter of said body section is in the range of about 3 to 10 millimeters and the wall thickness of said body section is about 0.2 to 1 millimeter;
- wherein the length of said pillow is about 2.5 to 4 times as great as said outside diameter, and wherein said flattened ends are flared outwardly so as to project beyond said body section.
A method for making a consolidated structure comprising:
- (a) providing a plurality of fired clay pillows whose external surface has been rendered impervious by means of a non-tacky coating, said pillows each having a tubularly-shaped body section whose ends are flattened closed;
- wherein the outside diameter of said body section is in the range of about 3 to 10 millimeters and the wall thickness of said body section is about 0.2 to 1 millimeter;
- and wherein the length of said pillow is about 2.5 to 4 times as great as said outside diameter;
- (b) admixing said pillows with a binder in an amount of about 1 to 8% based on the weight of said pillows;
- (c) arranging said plurality of pillows into a desired configuration;
- and
- (d) hardening said binder whereby said pillows become bonded together at their points of contact.
An article comprising a fired clay pillow, having a tubular-shaped body section whose ends are flattened closed;
- wherein the wall thickness of said body section is not greater than three millimeters;
- wherein the length of said pillow is about 2.5 to 4 times as great as the outside diameter of said body section, and wherein said flattened ends are flared outwardly so as to project beyond said body section.
Dependencies are inferred from the claim text.