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Class 237/30 - Air casing


Subclass of Class 237 - Heating systems
Definition: Vehicle-heating stoves having a casing for heating the air.
No. of patents: 3
Last issue date: 08/23/2005


NumberTitleIssue Date
6932105Antifreezing guard for pipes
A system and kit for forming an inexpensive protective plenum around pipes subject to freezing is disclosed. The system uses tubes formed of thin, flexible material, such as plastic tubes, to form the plenum. The plenum may be installed in sections with the sections...
08/23/2005
5170773Space heating unit for recreational vehicles
A space heating unit is designed for use in a recreational vehicle and particularly to operate in conjunction with a cooking stove wherein the heating unit has a housing which is placed over a pair of burners and air flow ducts extend across the housing a...
12/15/1992
4842046Slim-line van heater/air conditoner unit
A vehicle heater/air conditioner which includes heating and cooling coils enclosed within a housing and in flow communication with a blower member which pushes air through the housing. The housing containing the heating and cooling coils is positioned gen...
06/27/1989
 
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