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US 4,785,561 AGranted
Snow removal method
OwnerEleanor V. Swansoninventor
Life of this patent
Estimating the term…
Abstract
Snow removal equipment includes a snowblower on a truck delivering snow into the top of a snow reduction chamber on the back of the truck. The snow falls on several spaced apart, horizontal layers of hot, mutually parallel closely spaced tubes. The snow melts when it hits the tubes and the resulting liquid water is stored in the chamber until it is discharged from the chamber into a storm sewer.
Claims4
A method for continuously disposing of snow and ice in ambient temperatures below the freezing point of liquefied snow and ice, the method including the steps of:
- (a) providing an insulating snow reduction chamber with at least two generally horizontal, vertically spaced and vertically aligned fields of closely spaced-apart heated tubes, the chamber being provided with a snow and ice entry port above and vertically aligned with the uppermost field;
- (b) heating the interior of the chamber and its contents to a temperature greater than the freezing point of the liquefied snow and ice;
- (c) introducing sufficient liquid into the chamber to immerse the lowermost field of heated tubes;
- (d) discharging snow and ice through the chamber entry port onto the uppermost field of heated tubes;
- (e) supplying heat energy through the heated tubes at a rate sufficient to convert the snow and ice to liquid fast enough to prevent bridging over any of the fields of tubes and to maintain the liquid in the chamber above its freezing point;
- and
- (f) withdrawing liquid from the chamber as necessary to prevent the uppermost field from becoming immersed in liquid.
4 more elements
Dependencies are inferred from the claim text.