Mdt Corporation

Charles H Feathers

Bhabesh K Thakur

Charles O Hancock

John C Schmoegner

Charles E Ellis

Mel-Angeli M Burgos

Maurice Gilbert

A pressure vessel in which the air steam and liquid exhaust systems are combined and wherein all exhaust systems are directed through a water reservoir, using a single control valve and a temperature/pressure sensor in the system.

Air/steam/liquid exhaust device for single cycle pressure vessel

Hinge and latching structures associated with a door for a pressure vessel provides a tight and competent seal when the door is in sealed relationship with the opening of the vessel. The latching structure includes coupling structures which provide increased clamping engagement of the door in response to any increased pressure differential developed across the door.

Closure for doors used with small and medium sized pressure vessels

Apparatus and methods for proportional control of heating of a sterilizer chamber are disclosed in the application. A sterilizer chamber has heaters mounted on the walls, a wall temperature sensor and a chamber temperature sensor. The controller is operable to adjust the heat input by turning on the heaters for a variable fraction of a selected fixed interval and off for the remainder of the interval. When on the heaters provide a substantially constant heat input per unit time. The fraction of the interval during which the heaters are on is proportional to a temperature differential which comprises a setpoint temperature minus a temperature reading from one of the sensors. The controller has two, or in an alternate embodiment three, operating modes each having a unique temperature differential.

Proportional temperature control of a sterilizer

In an unplumbed sterilizer, a measured quantity of liquid is introduced into a partially evacuated chamber in a dump period. The liquid quantity is automatically controlled by closing a valve in the additional conduit upon the occurrence of either (a) the chamber pressure attaining a preset value, or (b) elapsing of a preset time, whichever occurs first.

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Hilton, NY, United States of America

Charles H Feathers