11. The first successful application of the free-piston engine concept was as air compressors . 12. Dynamic displacement air compressors include centrifugal compressors and axial compressors. 13. Around 1974, the first air compressor diving rigs were developed ( Cudney-Bueno 2000 ). 14. The turbine consisted of an air compressor , a combustion chamber and the turbine itself. 15. Thank goodness for power nailers hooked to an air compressor . 16. On 10 January, the starboard engine air compressor became troublesome. 17. Jack also carries a purse-like jerry-rigged from some air compressors and cans of refrigerant. 18. It had been stripped of its battery, air compressor , radio, antenna and spare tire. 19. Next time, I think I'll just bring my own air compressor and portable heater. 20. SUPERCHARGER : Tehcnically, any engine air compressor , including a turbocharger.