Abstract: An apparatus and method for using the Venturi effect to introduce a controllable amount of ambient air into the combustion cycle for a flameworking torch, thereby raising or lowering the flame temperature at the torch head, is disclosed. The apparatus includes a control valve to adjust the flow of the ambient air so as to offer control over the actual temperature of the flame during the flameworking and fabrication cycle in multiple application environments, including glassworking.

Abstract: An apparatus and method for substantially reducing or eliminating the introduction of ambient air into an open-crankcase compressor is disclosed. The method employs a compressed gas recycle control loop to reduce the magnitude of vacuum inside the open-crankcase compressor relative to ambient air pressure, thereby reducing or eliminating the introduction of ambient air into the open-crankcase compressor during the gas compression process.

Abstract: An apparatus and method for substantially reducing or eliminating the introduction of ambient air into an open-crankcase compressor is disclosed. The method employs a compressed gas recycle control loop to reduce the magnitude of vacuum inside the open-crankcase compressor relative to ambient air pressure, thereby reducing or eliminating the introduction of ambient air into the open-crankcase compressor during the gas compression process.

Abstract: A method and apparatus to reduce the intrusion of ambient air into an open-crankcase compressor. The method employs recycle control to reduce the magnitude of vacuum inside the compressor relative to ambient air pressure, and thereby eliminate the intrusion of said ambient air into said compressor.