Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL75168CpublicationCriticalpatent/NL75168C/xx
F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
F16K15/00—Check valves
F16K15/02—Check valves with guided rigid valve members
F16K15/06—Check valves with guided rigid valve members with guided stems
H—ELECTRICITY
H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02K—DYNAMO-ELECTRIC MACHINES
H02K19/00—Synchronous motors or generators
H02K19/16—Synchronous generators
H02K19/26—Synchronous generators characterised by the arrangement of exciting windings
H02K19/30—Synchronous generators characterised by the arrangement of exciting windings for compounding
