Invention Grant
- Patent Title: Contra-rotating propeller unit, method for assembly thereof, method for transportation thereof, and method for mounting thereof on mother ship
- Patent Title (中): 反转螺旋桨单元，其组装方法，运输方法及其在母舰上的安装方法
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Application No.: US12864494Application Date: 2008-11-28
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Publication No.: US08459950B2Publication Date: 2013-06-11
- Inventor: Hideki Shuto , Saiki Nishiyama
- Applicant: Hideki Shuto , Saiki Nishiyama
- Applicant Address: JP Tokyo
- Assignee: Japan Marine United Corporation
- Current Assignee: Japan Marine United Corporation
- Current Assignee Address: JP Tokyo
- Agency: Griffin & Szipl, P.C.
- Priority: JP2008-012713 20080123
- International Application: PCT/JP2008/071650 WO 20081128
- International Announcement: WO2009/093379 WO 20090730
- Main IPC: B64C11/48
- IPC: B64C11/48 ; B63H5/10
Abstract:
The object is to facilitate the installation of a contra-rotating propeller on a mother ship. Disclosed is a contra-rotating propeller unit in which a predetermined part on the rear side of an inner shaft (12) is supported by a contra-rotating rear bearing (36) provided in a boss (13a) of a front propeller (13), and which includes an inner fixing tool (50) detachably attached to a tip of an outer shaft (11) to temporarily support a predetermined part on the front side of the inner shaft (12), and a contra-rotating thrust bearing (40) provided in the boss (13a) of the front propeller (13) to receive the thrust load from the outer shaft (11) to transmit the thrust load to the inner shaft (12).
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