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Title: Free-piston engine

Patent ·
OSTI ID:7020128

This patent describes an apparatus utilizing energy to pump gas. It comprises a piston fitted to a using, a pressure chamber to one side of the piston comprising means to increase the pressure or volume of gas in the pressure chamber to cause outward acceleration of the piston; a rebounding vole to the other side of the piston opposing the outward movement of the piston by the gas pressure in the rebounding volume; and an outlet port in the casing located so as to be uncovered by the piston substantially before the piston has reached the outward end of the stroke of the piston.

Assignee:
NOV; NOV-92-049019; EDB-93-002471
Patent Number(s):
US 5144917; A
Application Number:
PPN: US 7-642084
OSTI ID:
7020128
Resource Relation:
Patent File Date: 16 Jan 1991
Country of Publication:
United States
Language:
English