Heat insulating device for fastening two metallic members or other objects to each other

Claim 1

A device for mechanically connecting two objects in spacedapart heat-insulating condition, at least one of said objects having a hole provided therein, said device comprising, a cylindrical bushing constructed of resilient heat resistant material, said bushing positioned between said objects and passing through said hole to extend at least partially beyond the surface of said one object and juxtaposed the surface of said other object, the bushing having a central passageway provided therein and opening at both ends thereof, and screw means positioned within said passageway, said screw means having a head and a shank, the shank having a cross-sectional dimension greater than that of said passageway, the screw means being positioned with said head adjacent the bushing part which extends beyond the surface of said one object such that the bushing is expanded within said hole to make contact with the walls thereof and to assume a bulged condition on both sides of said one object, and the shank being in threaded engagement with said other object to secure said bushing to said other object.

Claim 2

A device for mechanically connecting two objects in spacedapart heat-insulating condition, at least one of said objects having a hole provided therein, said device comprising, a cylindrical bushing constructed of resilient heat resistant material, said bushing positioned between said objects and passing through said hole to extend at least partially beyond the surface of said one object and juxtaposed the surface of said other object, the bushing having a central passageway provided therein and opening at both ends thereof, and screw means positioned within said passageway, said screw means having a head and a shank, the shank having a cross-sectional dimension greater than that of said passageway, the screw means being positioned with said head adjacent the bushing part which extends beyond the surface of said one object such that the bushing is expanded within said hole to make contact with the walls thereof and to assume a bulged condition on both sides of said one object, and the shank being in threaded engagement with said other object to secure said bushing to said other object.

Claim 4

A device for mechanically connecting two objects in spaced-apart heat-insulating condition, at least one of said objects having a hole provided therein, said device comprising, a cylindrical bushing constructed of resilient heat resistant material, said bushing positioned between said objects and passing through said hole to extend at least partially beyond the surface of said one object, the bushing having a central passageway provided therein and opening at both ends thereof, and screw means positioned within said passageway,, said screw means having a cross-sectional dimension greater than that of said passageway such that the bushing is expanded within said hole to make contact with the walls thereof and to assume a bulged condition on both sides of said one object, said bushing being juxtaposed the surface of said other object and secured to said other object by said screw means, said screw means being in threaded engagement only with said other object and not with said one object.

Claim 5

A device for mechanically connecting two objects in spaced-apart heat-insulating condition, at least one of said objects having a hole provided therein, said device comprising, a cylindrical bushing constructed of resilient heat resistant material, said bushing positioned between said objects and passing through said hole to extend at least partially beyond the surface of said one object, the bushing having a central passageway provided therein and opening at both ends thereof, and screw means positioned within said passageway,, said screw means having a cross-sectional dimension greater than that of said passageway such that the bushing is expanded within said hole to make contact with the walls thereof and to assume a bulged condition on both sides of said one object, said bushing being juxtaposed the surface of said other object and secured to said other object by said screw means, said screw means being in threaded engagement only with said other object and not with said one object.

Claim 6

A device for mechanically connecting two objects in spaced-apart heat-insulating condition, at least one of said objects having a hole provided therein, said device comprising, a cylindrical bushing constructed of resilient heat resistant material, said bushing positioned between said objects and passing through said hole to extend at least partially beyond the surface of said one object and juxtaposed the surface of said other object, the distance between said objects being defined by a spacer tube of hard heat-insulating material with the bushing being surrounded by said spacer tube, the bushing having a central passageway provided therein and opening at both ends thereof, and fastening means positioned within said passageway, said fastening means having a head and a shank, the shank having a cross-sectional dimension greater than that of said passageway, the fastening means being positioned with said head adjacent the bushing part which extends beyond the surface of said one object such that the bushing is expanded within said hole to make contact with the walls thereof and to assume a bulged condition on both sides of said one object, and the shank being in engagement with said other object to secure said bushing to said other object.

Claim 7

A device for mechanically connecting two objects in spaced-apart heat-insulating condition, at least one of said objects having a hole provided therein, said device comprising, a cylindrical bushing constructed of resilient heat resistant material, said bushing positioned between said objects and passing through said hole to extend at least partially beyond the surface of said one object and juxtaposed the surface of said other object, the distance between said objects being defined by a spacer tube of hard heat-insulating material with the bushing being surrounded by said spacer tube, the bushing having a central passageway provided therein and opening at both ends thereof, and fastening means positioned within said passageway, said fastening means having a head and a shank, the shank having a cross-sectional dimension greater than that of said passageway, the fastening means being positioned with said head adjacent the bushing part which extends beyond the surface of said one object such that the bushing is expanded within said hole to make contact with the walls thereof and to assume a bulged condition on both sides of said one object, and the shank being in engagement with said other object to secure said bushing to said other object.