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Application filed by Johannes Liaaen NilsfiledCriticalJohannes Liaaen Nils
Publication of CH281016ApublicationCriticalpatent/CH281016A/de
B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
B63H—MARINE PROPULSION OR STEERING
B63H3/00—Propeller-blade pitch changing
B63H3/02—Propeller-blade pitch changing actuated by control element coaxial with propeller shaft, e.g. the control element being rotary
B63H3/04—Propeller-blade pitch changing actuated by control element coaxial with propeller shaft, e.g. the control element being rotary the control element being reciprocatable
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CH281016D1949-03-281949-03-28Vorrichtung zum Verhindern des Eindringens von Seewasser in die Nabe von Schiffsschrauben mit verstellbaren Flügeln.
CH281016A
(de)
Un aparato para introducir automáticamente en las calderas, junto con el agua de alimentación, una determinada proporción de un reactivo antiincrustante