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US 4,728,536 AGranted
Method for insulating an ice rink
AssigneeJohn S. Burley
InventorsWilliam G. Burley, John S. Burley
Life of this patent
Estimating the term…
Abstract
Temporarily insulating frozen surfaces, such as ice rinks, from the ambient air by spreading a metastable liquid foam over the ice surface to remain thereon when the ice surface is not in use, then prior to the next use period, removing the aged, partially frozen foam. Fire fighting foam liquids are preferred embodiment foaming agents.
Claims6
A method for reducing the refrigeration load on frozen surface during non-operating periods which comprises:
- applying a metastable liquid foam directly on the frozen surface upon commencement of a non-operating period of time, thereby insulating the frozen surface from the ambient air;
- allowing the foam layer to remain quiescent throughout the non-operating period, during which period the foam undergoes aging and at least partial freezing;
- and
- at the expiration of the non-operating period removing the aged and frozen foam from the frozen surface.
1 more element
Dependencies are inferred from the claim text.