Allied Healthcare Products, Inc.

Charles Michaely

Kevin Donald Kroupa

Gabriel S Kohn

David L Boger

A pressure regulator utilizing a gauge having rugged internal components. In one embodiment, the gauge has a low profile and is mounted to the regulator body. In another embodiment, the gauge is integral with the regulator body. In one preferred embodiment, the gauge includes a pressure pin and a bias, such as a spring. One side of the pressure pin communicates directly with the source pressure and is urged by the source pressure to move the pressure pin in a first direction, while the other side of the pressure pin is at a known pressure, such as ambient or atmospheric pressure, and is urged by the bias to move the pressure pin in a second direction opposed to the first direction. An indication of the position of the pressure pin is sensed by a user and is used to determine the source pressure or level. In one aspect, the indicator is a pointer or indicator mounted to move in response to movement of the pressure pin and mounted so that its position is visible (i.e., sensed by sight) to the user. In another aspect, the pressure pin is arranged lengthwise inside the regulator and a disc or other shaped indicator is mounted on the end of the pressure pin. A lens is provided such that the edge of the disc (or other indicator) is visible to a user. A calibrated scale indicating the amount of gas in the bottle is provided such that the position of the disc (or other indicator) with respect to the scale will indicate an amount of gas left in the bottle.

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Prospect Heights, IL, United States of America

Charles Michaely