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US 9,174,656 B2Granted
Insulative railway boxcar
AssigneeGunderson LLC
InventorsKris Heitmeyer, Dan Militaru
Life of this patent
Estimating the term…
Abstract
A freight car having insulative material interposed between inner and outer enclosures of the freight car.
Claims29
A railway car comprising:
- (a) a cargo-carrying container having an inner enclosure defining an inwardly directed surface against which cargo can bear and an outer enclosure defining an outwardly directed surface exposed to an ambient environment surrounding said boxcar;
- and
- (b) a structural member having an inner portion supporting said inner enclosure where said inner portion has a self-bounded perimeter surface defining the volume of said inner portion, an outer portion supporting said outer enclosure where said outer portion has a self-bounded perimeter surface defining the volume of said outer portion and where the respective self-bounded perimeter surfaces of said inner portion and said outer portion are different and separated from each other in a direction transverse to a wall supported by at least one of said first portion and said second portion, respectively, and a thermally insulative spacer interposed between and secured to said inner portion and said outer portion;
- where
- (c) said structural member is a one of:
- (i) a side post;
- (ii) a door post
- (iii) a corner post;
- (iv) a side sill;
- and
- (v) an end sill.
8 more elements
In combination with a cargo-carrying enclosure of a railway car, a vertically-oriented load-bearing post comprising:
- (a) an inner portion having a self-bounded perimeter surface defining the volume of said inner portion;
- (b) an outer portion having a self-bounded perimeter surface defining the volume of said outer portion where the respective self-bounded perimeter surfaces of said inner portion and said outer portion are different and separated from each other in a direction transverse to a wall supported by at least one of said first portion and said second portion, respectively;
- and
- (c) a thermally insulative spacer interposed between and secured to said inner portion and said outer portion.
1 more element
A railway car having a cargo-carrying container comprising:
- (a) a metal outer enclosure exposed to an ambient environment and a metal inner enclosure against which cargo can bear;
- (b) a metal support assembly structurally interposed between and structurally supporting said outer enclosure and said inner enclosure;
- and
- (c) a non-metallic insulative layer thermally isolating said inner enclosure from said outer enclosure, such that there is no metallic interconnection between said inner enclosure and said outer enclosure.
1 more element
Dependencies are inferred from the claim text.