Brevetti

PROCESSO DI ESTRAZIONE DEL RAME
di William E. Greenawalt brevettato il 18 Gennaio 1927, US Patent Office N° 1614668



PROCESSO DI ESTRAZIONE DEL NICHEL E DEL COBALTO DA MINERALI FERRUGINOSI
di Frank O. Kichline brevettato il 29 Giungo 1926, US Patent Office N° 1590525



GAS EXTRACTOR (23-04-1985)

A gas extractor for processing crude oil to provide the energy to power an internal combustion engine driving a conventional oil pumping unit. the extractor comprises a vertical tank, an extractor chamber, an exhaust gas pipe passing through the tank with a plurality of baffle pans mounted longitudinally thereon; a crude oil reservoir in the top of the tank, valve means controlling the rate of oil flow from the reservoir to the upper baffle pan; means to vary the amount of exhaust gases passed through the exhaust pipe to control the temperature of the extractor chamber; a gas outlet passage, air inlet passage and oil drain passages in the extractor chamber, each adjacent baffle pan being oppositely tilted and having a drain opening at its lower side whereby the oil passing through the extractor flows across each adjacent oil pan before being drained from the extractor.

SMOKE EXTRACTOR (22-10-2001)

An extractor system for extracting hazardous smoke or other unwanted gases in an aircraft is provided. The extractor system includes an external air receiver mounted on the exterior of the aircraft, a vent receptacle positioned inside the aircraft, and an air flow conduit tubing interconnecting the receiver and the vent receptacle. When the aircraft is in motion, air flow outside the aircraft enters the external air receiver and induces a suction force at the vent receptacle, which siphons out smoke and other unwanted gases in the interior of the aircraft. The system also includes a valve to control the suction force induced at the vent receptacle. Alternatively, the extractor system can be used on other moving vessels for extracting smoke or other unwanted gases in the vessels.


CORK EXTRACTOR (06-05-2001) 

An extractor for removing a cork from the inside of a main body of a narrow neck bottle comprises a handle, and at least two generally oval wire loops depending from the handle, the wire loops being deformable so they can fit through the neck and expand and capture a cork. Optionally mesh is provided with the loops for extracting cork fragments. The mesh can be held in place by interlocking the loops together.


PROCESSO E APPARATO PER L'ESTRAZIONE DI ORO ED ARGENTO
di  C.D. Bonnet brevettato il 13 Maggio 1884, US Patent Office N° 298663