Pipe having insulating material and cover and having two strips of self-sealing adhesive material

Claim 2

In a length of pipe insulation including cylindrically shaped insulating material, a flexible outer cover strip adhesively secured to the insulating material and having an overlapping flap forming one edge portion thereof, the flap being adapted to overlap an oposite edge portion of the cover strip when the insulation is installed on a pipe, and a first strip of adhesive material adhesively secured on one side to the inner side of the flap, having self - sealing adhesive on the other side thereof, and having a protective strip of covering material removably adhered to the self - sealing adhesive on said other side thereof, the improvement comprising a second strip of adhesive material adhesively secured on one side to the outer side of the opposite edge portion of the cover strip, having self - sealing adhesive on the other side thereof, and having a protective strip of covering material removably adhered to the self - sealing adhesive on said other side thereof, the second strip of adhesive material cooperatively engaging the first strip of adhesive material and firmly adhering thereto upon removal of both protective strips and the mere pressing of the strips of adhesive material together after the insulation is installed on a pipe.

Claim 3

A length of pipe insulation as claimed in claim 1 wherein the insulating material comprises two semi-cylindrical pieces.

Claim 4

A length of pipe insulation as claimed in claim 2 wherein the insulating material is fibrous glass wool.

Claim 5

A length of pipe insulation as claimed in claim 1 wherein the insulating material is fibrous glass wool.

Claim 6

A length of pipe insulation as claimed in claim 1 including additional adhesive means for temporarily holding the flap in closed position during storage and shipment of the pipe insulation.

Claim 7

A length of pipe insulation comprising tubularly shaped insulating material, a flexible outer cover strip secured to the insulating material by beads of heat meltable adhesive extending longitudinally of the insulating material, the cover strip having an overlapping flap forming one edge portion thereof, the flap being adapted to overlap an opposite edge portion of the cover strip when the insulation is installed on a pipe, a first strip of adhesive material adhesively secured on one side to the inner side of the flap, having self - sealing adhesive on the other side thereof, and having a protective strip of covering material removably adhered to the self - sealing adhesive on said other side thereof, and a second strip of adhesive material adhesively secured on one side to the outer side of the opposite edge portion of the cover strip, having self - sealing adhesive on the other side thereof, and having a protective strip of covering material removably adhered to the self - sealing adhesive on said other side thereof, the second strip of adhesive material cooperatively engaging the first strip of adhesive material and firmly adhering thereto upon removal of both protective strips and the mere pressing of the strips of adhesive material together after the insulation is installed on a pipe.

Claim 8

A length of pipe insulation comprising tubularly shaped insulating material, a flexible outer cover strip secured to the insulating material by beads of heat meltable adhesive extending longitudinally of the insulating material, the cover strip having an overlapping flap forming one edge portion thereof, the flap being adapted to overlap an opposite edge portion of the cover strip when the insulation is installed on a pipe, a first strip of adhesive material adhesively secured on one side to the inner side of the flap, having self - sealing adhesive on the other side thereof, and having a protective strip of covering material removably adhered to the self - sealing adhesive on said other side thereof, and a second strip of adhesive material adhesively secured on one side to the outer side of the opposite edge portion of the cover strip, having self - sealing adhesive on the other side thereof, and having a protective strip of covering material removably adhered to the self - sealing adhesive on said other side thereof, the second strip of adhesive material cooperatively engaging the first strip of adhesive material and firmly adhering thereto upon removal of both protective strips and the mere pressing of the strips of adhesive material together after the insulation is installed on a pipe.

Claim 9

A length of pipe insulation as claimed in claim 6 wherein the insulating material is fibrous glass wool.

Claim 10

A length of pipe insulation as claimed in claim 6 wherein the cover strip is secured to the insulating material also by beads of water based adhesive extending longitudinally of the insulating material and being spaced from the beads of heat meltable adhesive.

Claim 11

A length of pipe insulation comprising two semi-cylindrical pieces of insulating material adapted to form a tube, and a flexible outer cover strip secured to the insulating material by four beads of heat meltable adhesive extending longitudinally of the insulating material and being disposed between the cover strip and the outer periphery of the semi-cylindrical pieces of insulating material and respectively adjacent flat radial surfaces respectively defining circumferentially opposite ends of the semi-cylindrical pieces of insulating material, the cover strip having an overlapping flap forming one edge portion thereof, the flap being adapted to overlap an opposite edge portion of the cover strip when the insulation is installed on a pipe, a first strip of adhesive material adhesively secured on one side of the inner side of the flap, having self - sealing adhesive on the other side thereof, and having a protective strip of covering material removably adhered to the self - sealing adhesive on said other side thereof, and a second strip of adhesive material adhesively secured on one side to the outer side of the opposite edge portion of the cover strip, having self - sealing adhesive on the other side thereof, and having a protective strip of covering material removably adhered to the self - sealing adhesive on said other side thereof, the second strip of adhesive material cooperatively engaging the first strip of adhesive material and firmly adhering thereto upon removal of both protective strips and the mere pressing of the strips of adhesive material together after the insulation is installed on a pipe.

Claim 12

A length of pipe insulation comprising two semi-cylindrical pieces of insulating material adapted to form a tube, and a flexible outer cover strip secured to the insulating material by four beads of heat meltable adhesive extending longitudinally of the insulating material and being disposed between the cover strip and the outer periphery of the semi-cylindrical pieces of insulating material and respectively adjacent flat radial surfaces respectively defining circumferentially opposite ends of the semi-cylindrical pieces of insulating material, the cover strip having an overlapping flap forming one edge portion thereof, the flap being adapted to overlap an opposite edge portion of the cover strip when the insulation is installed on a pipe, a first strip of adhesive material adhesively secured on one side of the inner side of the flap, having self - sealing adhesive on the other side thereof, and having a protective strip of covering material removably adhered to the self - sealing adhesive on said other side thereof, and a second strip of adhesive material adhesively secured on one side to the outer side of the opposite edge portion of the cover strip, having self - sealing adhesive on the other side thereof, and having a protective strip of covering material removably adhered to the self - sealing adhesive on said other side thereof, the second strip of adhesive material cooperatively engaging the first strip of adhesive material and firmly adhering thereto upon removal of both protective strips and the mere pressing of the strips of adhesive material together after the insulation is installed on a pipe.

Claim 13

A length of pipe insulation as claimed in claim 9 wherein the pieces of insulating material are fibrous glass wool.

Claim 14

A length of pipe insulation as claimed in claim 9 wherein the cover strip is secured to the pieces of insulating material also by beads of water based adhesive extending longitudinally of the pieces of insulating material and being spaced from the beads of heat meltable adhesive.

Claim 15

A length of pipe insulation comprising two semi - cylindrical pieces of insulating material adapted to form a tube, and a flexible outer cover strip secured to the insulating material by four beads of heat meltable adhesive extending longitudinally of the insulating material and being disposed between the cover strip and the outer periphery of the semi - cylindrical pieces of insulating material and respectively adjacent flat radial surfaces respectively defining circumferentially opposite ends of the semi - cylindrical pieces of insulating material, and also by beads of water based adhesive extending longitudinally of the pieces of insulating material and being disposed between the cover strip and the outer periphery of the semi - cylindrical pieces of insulating material in spaced relationship from the beads of heat meltable adhesive, the cover strip having an overlapping flap forming one edge portion thereof, the flap being adapted to overlap an opposite edge portion of the cover strip when the insulation is installed on a pipe.

Claim 16

A length of pipe insulation comprising two semi - cylindrical pieces of insulating material adapted to form a tube, and a flexible outer cover strip secured to the insulating material by four beads of heat meltable adhesive extending longitudinally of the insulating material and being disposed between the cover strip and the outer periphery of the semi - cylindrical pieces of insulating material and respectively adjacent flat radial surfaces respectively defining circumferentially opposite ends of the semi - cylindrical pieces of insulating material, and also by beads of water based adhesive extending longitudinally of the pieces of insulating material and being disposed between the cover strip and the outer periphery of the semi - cylindrical pieces of insulating material in spaced relationship from the beads of heat meltable adhesive, the cover strip having an overlapping flap forming one edge portion thereof, the flap being adapted to overlap an opposite edge portion of the cover strip when the insulation is installed on a pipe.

Claim 17

A length of pipe insulation as claimed in claim 12 including a strip of adhesive material adhesively secured on one side to the inner side of the flap, having self - sealing adhesive on the other side thereof, and having a protective strip of covering material removably adhered to the self - sealing adhesive on said other side thereof.

Claim 18

A length of pipe insulation as claimed in claim 13 wherein the pieces of insulating material are fibrous glass wool.

Claim 19

A length of pipe insulation as claimed in claim 13 including additional adhesive means for temporarily holding the flap with the strips of adhesive material and release paper thereon in closed position during storage and shipment of the pipe insulation.

Claim 20

A length of pipe insulation as claimed in claim 12 wherein the pieces of insulating material are fibrous glass wool.

Claim 21

A length of pipe insulation comprising tubularly shaped insulating material and a flexible outer cover strip adhesively secured to the insulating material, the cover strip having overlapping opposite edge portions, one edge portion having self - sealing adhesive on an inner side thereof and the other edge portion having self - sealing adhesive on an outer side thereof, and the self - sealing adhesive on both edge portions being protected by covering material removably adhered thereto, whereby when the length of pipe insulation is installed on a pipe, the covering material on the self - sealing adhesive may be removed and the overlapping opposite edge portions of the cover strip may be merely pressed together to form a firm seal therebetween.

Claim 22

A length of pipe insulation comprising tubularly shaped insulating material and a flexible outer cover strip adhesively secured to the insulating material, the cover strip having overlapping opposite edge portions, one edge portion having self - sealing adhesive on an inner side thereof and the other edge portion having self - sealing adhesive on an outer side thereof, and the self - sealing adhesive on both edge portions being protected by covering material removably adhered thereto, whereby when the length of pipe insulation is installed on a pipe, the covering material on the self - sealing adhesive may be removed and the overlapping opposite edge portions of the cover strip may be merely pressed together to form a firm seal therebetween.

Claim 23

A length of pipe insulation comprising tubularly shaped insulating material and a flexible outer cover strip secured to the insulating material by spaced separate beads of heat meltable adhesive and water based adhesive extending longitudinally of the insulating material, the cover strip having an overlapping flap forming one edge portion thereof, the flap being adapted to overlap an opposite edge portion of the cover strip when the insulation is installed on a pipe.

Claim 24

A length of pipe insulation comprising tubularly shaped insulating material and a flexible outer cover strip secured to the insulating material by spaced separate beads of heat meltable adhesive and water based adhesive extending longitudinally of the insulating material, the cover strip having an overlapping flap forming one edge portion thereof, the flap being adapted to overlap an opposite edge portion of the cover strip when the insulation is installed on a pipe.

Claim 25

A length of pipe insulation as claimed in claim 17 wherein the insulating material is fibrous glass wool.

Claim 26

A length of pipe insulation as claimed in claim 17 wherein the insulating material comprises two semi - cylindrical pieces.

Claim 27

A length of pipe insulation as claimed in claim 18 wherein the insulating material is fibrous glass wool.

Claim 28

A length of pipe insulation as claimed in claim 18 wherein the insulating material comprises two semi - cylindrical pieces.

Claim 29

A length of pipe insulation as claimed in claim 18 wherein the flap has self - sealing adhesive with protective covering material on an inner side thereof.