Search International and National Patent Collections

1. (WO2018106139) PUMPS, COMPRESSORS AND RELATED APPARATUS, SYSTEMS, AND METHODS

Pub. No.:    WO/2018/106139    International Application No.:    PCT/RU2016/000852
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Wed Dec 07 00:59:59 CET 2016
IPC: E04B 9/08
F04B 9/111
F04B 39/06
Applicants: EXTIEL HDC, LLС
KURMAEV, Alexander Sergeyevich
Inventors: KURMAEV, Alexander Sergeyevich
KURMAEV, Sergey Alexandrovich
INDUSHNY, Evgeny Nikolaevich
WOLF, Wayne
O'BRIEN, Michael
Title: PUMPS, COMPRESSORS AND RELATED APPARATUS, SYSTEMS, AND METHODS
Abstract:
Pumps comprising pistons, first stage cylinders, shafts and second stage cylinders. The pistons define shaft and coolant sides and slidably engage the first stage cylinders. The first stage cylinders extend beyond the coolant sides. The shafts operatively couple to the shaft sides and extend into the first stage cylinders. The second stage cylinders couple to the coolant sides of the pistons and extend into the first stage cylinder. Other embodiments provide pumps comprising shafts, pistons coupled to the shafts, and cylinders. The cylinders define piston-associated displacement volumes and shaft-associated displacement volumes. As the shafts reciprocate, the pistons pump fluid in the piston-associated displacement volumes and the shafts pump fluid in the shaft-associated displacement volumes. Note also that some shafts can have diameters about equal to the inside diameters of the cylinders. Additionally, the shafts of these embodiments have diameters about equal to the inner diameters of the cylinders.