GB1250197A - - Google Patents
Info
- Publication number
- GB1250197A GB1250197A GB1250197DA GB1250197A GB 1250197 A GB1250197 A GB 1250197A GB 1250197D A GB1250197D A GB 1250197DA GB 1250197 A GB1250197 A GB 1250197A
- Authority
- GB
- United Kingdom
- Prior art keywords
- propeller
- flank
- oct
- main propeller
- counter
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/28—Other means for improving propeller efficiency
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Toys (AREA)
Abstract
1,250,197. Screw propellers. H. KUBOTA. 11 Oct., 1968 [12 Oct., 1967], No. 48408/68. Heading B7V. A freely rotatable counter-propeller 3 is of larger diameter than the (conventional) main propeller 2 and situated a short distance behind same. A flank 3b 1 of the blade receives the turbulent back-flow and is driven thereby; the surface 3b 2 acting to assist propulsion of the ship. Flank 3b 1 has a lower pitch than that of both the main propeller and the surface 3b 2 . The portion 3a of the counter-propeller, that lying outside the diameter of the main propeller, is narrow and the blade thickness increases suddenly between 3a and 3b and thereafter gradually narrows as shown.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6555167 | 1967-10-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1250197A true GB1250197A (en) | 1971-10-20 |
Family
ID=13290244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1250197D Expired GB1250197A (en) | 1967-10-12 | 1968-10-11 |
Country Status (7)
Country | Link |
---|---|
US (1) | US3549271A (en) |
DE (1) | DE1801813A1 (en) |
FR (1) | FR1589036A (en) |
GB (1) | GB1250197A (en) |
NL (1) | NL6814500A (en) |
SE (1) | SE341147B (en) |
SU (1) | SU386498A3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011144239A1 (en) | 2010-05-19 | 2011-11-24 | Wärtsilä Finland Oy | Rotational energy recovery appendage |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4381901A (en) * | 1979-08-17 | 1983-05-03 | Labudde Russell G | Anti-cavitation marine propeller |
DE3202862C2 (en) * | 1982-01-29 | 1984-04-12 | Metronic Electronic GmbH, 7210 Rottweil | Air bubble massager |
US4571192A (en) * | 1983-11-09 | 1986-02-18 | Allied Corporation | Self propelled spherical vehicle |
DE3469874D1 (en) * | 1984-01-14 | 1988-04-21 | Ostermann Metallwerke Gmbh & C | Arrangement of ship screw and guide wheel |
SE456075B (en) * | 1984-11-29 | 1988-09-05 | Volvo Penta Ab | ROTOR SYSTEM, PREFERRED BAT PROPELLER SYSTEM |
DE3931489C2 (en) * | 1989-09-21 | 1994-09-01 | Metrax Gmbh | Bubble mat for an air bubble massager |
DE102011055515A1 (en) * | 2011-11-18 | 2013-05-23 | Becker Marine Systems Gmbh & Co. Kg | Propeller arrangement, in particular for watercraft |
CN107867382B (en) * | 2017-10-16 | 2023-04-21 | 重庆交通大学 | Propeller device |
US11713101B2 (en) | 2020-12-04 | 2023-08-01 | Jeffrey L. HATHAWAY | Propeller hubcap |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH91268A (en) * | 1919-03-04 | 1921-10-17 | Etienne Oehmichen | Method for improving the efficiency of a propeller and apparatus for carrying out the method. |
GB332124A (en) * | 1928-10-01 | 1930-07-17 | Percival Edwin Mcneil | Improvements in screw propulsion |
US2126221A (en) * | 1936-11-25 | 1938-08-09 | John W Sessums | Aircraft propeller unit |
-
1968
- 1968-10-02 US US764575A patent/US3549271A/en not_active Expired - Lifetime
- 1968-10-08 DE DE19681801813 patent/DE1801813A1/en active Pending
- 1968-10-08 SE SE13569/68A patent/SE341147B/xx unknown
- 1968-10-10 NL NL6814500A patent/NL6814500A/xx unknown
- 1968-10-11 FR FR1589036D patent/FR1589036A/fr not_active Expired
- 1968-10-11 SU SU1277103A patent/SU386498A3/ru active
- 1968-10-11 GB GB1250197D patent/GB1250197A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011144239A1 (en) | 2010-05-19 | 2011-11-24 | Wärtsilä Finland Oy | Rotational energy recovery appendage |
Also Published As
Publication number | Publication date |
---|---|
FR1589036A (en) | 1970-03-16 |
SU386498A3 (en) | 1973-06-14 |
SE341147B (en) | 1971-12-13 |
NL6814500A (en) | 1969-04-15 |
US3549271A (en) | 1970-12-22 |
DE1801813A1 (en) | 1969-04-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |