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Class Information
Number: 236/82
Name: Automatic temperature and humidity regulation > Motors > Fluid-operated > Relay > Compound
Description: Devices wherein the fluid-motor controlled by a relay is controlled by another relay, which is in turn controlled by the means responsive to the temperature to be regulated.

Sub-classes under this class:

Class Number Class Name Patents
236/83 Snap-acting 0

Patents under this class:

Patent Number Title Of Patent Date Issued
5310111 Pneumatic controller May. 10, 1994
4506830 Device for simultaneous control of air flow and circulation speed for an air conditioning installation with variable air flow Mar. 26, 1985
4480783 VAV Terminal local control loop Nov. 6, 1984
4421271 Zero energy band subbase for pneumatic thermostats Dec. 20, 1983
4325427 Dual thermostat control apparatus with dead band response Apr. 20, 1982
4312475 Flow adjustment mechanism for air distributor systems Jan. 26, 1982
4307836 Pneumatic control means for a vehicle heat exchanger system or the like Dec. 29, 1981
4253603 Temperature responsive control apparatus Mar. 3, 1981
4094463 System having reset action Jun. 13, 1978
4037651 Temperature control apparatus of air conditioner for automobiles Jul. 26, 1977

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