Annular Bourdon Tube Gauge Assembly

An annular bourdon tube gauge assembly comprising:

• an adaptation allowing said annular bourdon tube gauge assembly to be mounted generally externally circumferentially of a portion of a body member that is adapted to confining a pressurized fluid;
• a first flange element and a second flange element, said first and second flange elements adapted to engage said portion and to extend approximately radially outwardly therefrom;
• a bourdon tube member having a generally spiral shape and an outer tube surface, said generally spiral shape having a generally circular central opening therein, said generally circular central opening being adapted to receive said portion therethrough, said bourdon tube member further having a radially inner end, a radially outer end, and a fluid pressure receiving port, said radially inner end adapted to being generally spatially fixed with respect to said portion, said radially outer end being generally free to move generally circumferentially of said bourdon tube member responsive to changes in said fluid pressure, said fluid pressure receiving port adapted to being placed in fluid communication with said pressurized fluid, said bourdon tube member being generally axially disposed between said first and second flange elements;
• a pressure level indicator mounted to and moveable with said radially outer end, said pressure level indicator disposed between said first and second flange elements and viewable from a position located approximately laterally outward of said first and second flange elements;
• a window element, said window element having a display portion being substantially transparent and disposed between said pressure level indicator and said position;
• and
• a spool member having an axial bore and a spool sleeve, said second flange element being an integral part of said spool member, said axial bore being large enough to receive said portion therethrough, said spool sleeve extending generally parallel of said axial bore and sized to be receivingly engaged by said bourdon tube member at generally said radially inner end, said second flange element extending generally radially outward from said spool sleeve.