Class 236/61 - With pressure control

Subclass of Class 236 - Automatic temperature and humidity regulation
Definition: Air relief-valves controlled by both thermostatic and pressure-controlled
No. of patents: 3
Last issue date: 08/21/2001

Number	Title	Issue Date
6276312	Thermal control cooling system vacuum valve A cooling system closure includes a closure apparatus adapted to mount on a cooling system and formed to include a flow passage arranged to receive fluid discharged from the cooling system and a relief valve positioned to move between an opened position p...	08/21/2001
4489883	Temperature regulated dual pressure device A temperature regulated dual pressure radiator cap for an engine coolant system is disclosed having a temperature actuated valve that operates to normally open a large pressure responsive valve area to the coolant pressure below a predetermined coolant te...	12/25/1984
4147302	Home heating system control A heat control system designed to control individual radiators in a heating system where there is only one boiler supplying steam, or one heated fluid source such as a utility steam supply, and where there is no separate condensate return line; each radia...	04/03/1979

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