Class 236/41 - With trap

Subclass of Class 236 - Automatic temperature and humidity regulation
Definition: Subject matter in combination with an automatic trap for
No. of patents: 3
Last issue date: 04/16/1991

Number	Title	Issue Date
5007582	Reduced pressure steam heat treating device A device for heating with reduced pressure steam directly or indirectly a material or product to be heat-treated, which includes a heat exchanger chamber which is supplied with steam through a pressure reducing valve and evacuated by an ejector device whi...	04/16/1991
4527733	Check valve A thermostatic valve including a housing that defines a housing inlet and a housing outlet and a valve body having an end wall and a side wall that define a valve chamber within the housing. The end wall defines an annular valve seat and a valve inlet ope...	07/09/1985
3973173	Curtain control system for poultry houses The side curtains of a poultry house are automatically opened upon a power failure in the electrical circuit of the ventilating system. An electrical monitoring circuit activated responsive to such power failure, releases a winch which normally maintains ...	08/03/1976

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