the control element being reciprocatable

Introduced: September 1968

Last revised: January 2006

Full Title

Propeller-blade pitch changing > actuated by control element coaxial with propeller shaft, e.g. the control element being rotary > the control element being reciprocatable

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
Subclass:: MARINE PROPULSION OR STEERING

Top Applicants

Top 10 applicants by patent filingsfor class B63, 2013–2023, worldwide · Source: EPO PATSTAT

SAMSUNG HEAVY INDUSTRIES KR 5,719
DAEWOO SHIPBUILDING & MARINE ENGINEERING COMPANY KR 4,684
HYUNDAI HEAVY INDUSTRIES COMPANY KR 3,015
ZHEJIANG OCEAN UNIVERSITY 1,359
HUDONG-ZHONGHUA SHIPBUILDING (GROUP) COMPANY 1,221
HARBIN ENGINEERING UNIVERSITY 1,175
SHANGHAI WAIGAOQIAO SHIPBUILDING COMPANY 1,129
CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY 1,113
GUANGZHOU SHIPYARD INTERNATIONAL COMPANY 1,073
JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY 963