Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
295 words
A precast reinforced insulating member for use as a covering for a furnace pipe comprising: (a) a body of insulating material having an arcuate shaped inner surface adapted to extend in intimate contact with the surface of a furnace tube in use, an outer surface, a pair of transverse side faces extending from the inner arcuate surface to the outer surface and longitudinally of the body, and a pair of oppositely disposed end faces; (b) a plurality of resiliently deformable coil spring members, each coil spring member having a pair of oppositely disposed ends and a convoluted body extending therebetween, each coil spring member extending circumferentially of said body with the inner periphery of each turn of its convoluted body located at said inner surface, each coil spring member having a diameter such that its outer periphery projects a substantial distance into said body of insulating material, each coil spring member being resiliently longitudinally elongated to space adjacent turns thereof from one another to facilitate the passage of fluid insulating material therebetween during casting, the resilient elongation loading the coil spring member so that it is retained in its regular location when changing the mold during precasting, (c) passage means opening through said body between said inner arcuate surface and said outer surface thereof adjacent each end of each reinforcing coil spring member; (d) weldable lug means secured to each end of each reinforcing coil spring member and projecting into each passage means in a plane disposed adjacent to and substantially parallel to said inner arcuate surface whereby a substantial portion of each weldable lug means is disposed in weldable proximity to a furnace pipe and is accessible through said passage means when the insulating member is operably located about a furnace pipe in use.
Claim 2
Dependent Claim
295 words
A precast reinforced insulating member for use as a covering for a furnace pipe comprising: (a) a body of insulating material having an arcuate shaped inner surface adapted to extend in intimate contact with the surface of a furnace tube in use, an outer surface, a pair of transverse side faces extending from the inner arcuate surface to the outer surface and longitudinally of the body, and a pair of oppositely disposed end faces; (b) a plurality of resiliently deformable coil spring members, each coil spring member having a pair of oppositely disposed ends and a convoluted body extending therebetween, each coil spring member extending circumferentially of said body with the inner periphery of each turn of its convoluted body located at said inner surface, each coil spring member having a diameter such that its outer periphery projects a substantial distance into said body of insulating material, each coil spring member being resiliently longitudinally elongated to space adjacent turns thereof from one another to facilitate the passage of fluid insulating material therebetween during casting, the resilient elongation loading the coil spring member so that it is retained in its regular location when changing the mold during precasting, (c) passage means opening through said body between said inner arcuate surface and said outer surface thereof adjacent each end of each reinforcing coil spring member; (d) weldable lug means secured to each end of each reinforcing coil spring member and projecting into each passage means in a plane disposed adjacent to and substantially parallel to said inner arcuate surface whereby a substantial portion of each weldable lug means is disposed in weldable proximity to a furnace pipe and is accessible through said passage means when the insulating member is operably located about a furnace pipe in use.
Claim 3
Dependent Claim
83 words
A precast reinforcing insulating member as claimed in claim 1 wherein said weldable lug means has an inner end portion projecting inwardly of the end of the reinforcing coil spring member to underlie at least two adjacent turns of the coil which are spaced from one another, said two adjacent turns being welded to said underlying portion of said lug whereby the load carried by the weldable lug is distributed to at least two turns of the reinforcing coil spring member in use.
Claim 4
Dependent Claim
107 words
A precast reinforcing insulating member as claimed in claim 1 wherein said weldable lug means consists of an eye-bolt member having a leg portion thereof connected to the coil spring member and a head portion thereof projecting outwardly from the coil spring member into the passage means, the head portion extending in a plane substantially parallel to said inner surface so as to be disposed in a face-to-face relationship with the outer surface of a furnace pipe in use, the eye of said bolt opening through said head at right angles to said plane so that the head is weldable to a furnace pipe through said eye.
Claim 5
Dependent Claim
23 words
A precast reinforcing insulating member as claimed in claim 1 wherein said reinforcing coil spring members are formed from stainless steel coil springs.
Claim 6
Dependent Claim
44 words
A precast reinforcing insulating member as claimed in claim 1 wherein said weldable lug means is formed from a metal of a heavier gauge than that of the reinforcing coil members so as to be more readily weldable to the furnace pipe in use.