WO2001092719A1 - The hydroscrew-electric power generating device - Google Patents

The hydroscrew-electric power generating device Download PDF

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Publication number
WO2001092719A1
WO2001092719A1 PCT/CA2000/000657 CA0000657W WO0192719A1 WO 2001092719 A1 WO2001092719 A1 WO 2001092719A1 CA 0000657 W CA0000657 W CA 0000657W WO 0192719 A1 WO0192719 A1 WO 0192719A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydroscrew
generator
matl
shaft
generating device
Prior art date
Application number
PCT/CA2000/000657
Other languages
French (fr)
Inventor
Benjamin Morrison Pettit
Original Assignee
Benjamin Morrison Pettit
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.)
Filing date
Publication date
Application filed by Benjamin Morrison Pettit filed Critical Benjamin Morrison Pettit
Priority to AU53780/00A priority Critical patent/AU5378000A/en
Priority to PCT/CA2000/000657 priority patent/WO2001092719A1/en
Publication of WO2001092719A1 publication Critical patent/WO2001092719A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • F03B17/061—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially in flow direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/24—Rotors for turbines
    • F05B2240/243—Rotors for turbines of the Archimedes screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/40—Transmission of power
    • F05B2260/403—Transmission of power through the shape of the drive components
    • F05B2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
    • F05B2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclic, planetary or differential type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H2001/289—Toothed gearings for conveying rotary motion with gears having orbital motion comprising two or more coaxial and identical sets of orbital gears, e.g. for distributing torque between the coaxial sets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Definitions

  • This invention relates to an apparatus which rotates by the flow force of a river, stream, or tidal water producing electric power.
  • the apparatus may be referred to as the "Hydroscrew”.
  • Contemporary devices for hydroelectric power generation consist of high pressure devices built in fixed locations whereby requiring that rivers or streams be artificially damned, affecting the sanctity of the body of water as well as adversely altering the natural habitats of its aquatic life.
  • Contemporary devices utilize the potential energy of rivers and streams by artificially raising the level or head thus physically altering the shoreline and blocking access paths up and down waterways for migration.
  • This invention utilizes the kinetic energy of the waterway to drive the apparatus.
  • the invention is portable and may be simply positioned in a moving body of water without altering greatly its flow pattern, physical shape or terrain along the shoreline.
  • This invention revolutionizes the method of harnessing power from moving bodies of water as it provides an alternative to the utilization of low or high head hydroelectric turbine installations.
  • FIG. 1 shows a general layout of the complete unit including Hydroscrew, pivot arm linkage, floating connection and piling complete with lockable stop cap.
  • Figure 2 is a detailed cross section of the head end including component parts.
  • Figure 3 shows the tail end of the apparatus including the shaft and screw blade.
  • Figure 4 shows two cross sections of the planetary gear drive.
  • the Hydroscrew shown in the general arrangement and section drawings is designed to drive a 2000 watt generator or alternator, however, this device can be manufactured larger or smaller to drive most any size generator required.
  • the Hydroscrew illustrated comprises a shaft 1 having welded to it a helical blade 2 which together are allowed to rotate freely from within a housing 3, 4, 5 and 6.
  • the housing provides a watertight shell encapsulating the internal machine components and generator 61.
  • the shaft and screw section of the apparatus shall be referred to as the "tail”.
  • the housing and internal components shall be referred to as the "head”.
  • the head is divided into three compartments; aft section, mid section and bow section.
  • the aft section consists of a 0.18" thick shell 3a, a shaft sleeve 3b, and a flange ring 3c.
  • the shaft sleave is drilled and tapped and fitted with a double mechanical seal 31, gasket 32 and fastening bolts 33 to prevent water from entering the housing.
  • the mid section consists of 0.18" thick shell 4a with two flange rings 4b and 4c welded to either end.
  • the flange ring 4b is drilled and tapped for placement of watertight gasket 11 and fastening bolts 13.
  • On the top side of the shell an oil intake coupling 4h, O-ring seal 15 and plug 17 are provided.
  • Welded to the mid section housing are two mounting plates 4d and 4e. To these plates are welded each a sleeve 4f and 4g and to each sleeve backing rings 41b and 42b fastened by bolts 41c and 42c.
  • the tail end bearing 41a and the head end bearing 42a are angular contact ball bearings and provide a cantilever shaft mount allowing free rotation. As well, the head end bearing provides thrust restraint from the drag force of the screw. This thrust force is transmitted through the shaft into the taperlock device 21, and then transmitted through the spacer ring 43 onto the head end bearing.
  • the head end mounting plate 4e is drilled and tapped to suit mounting of the planet gear carrier block 45a which is fastened by pinching the spacer sleave 45d with bolts 45e.
  • the aluminum planet carrier is bored suitably for the mounting of six planet gear bearings 45b and two sun gear bearings 45c.
  • the planet gear assembly is designed for a input:output ration of 1:12.4. Power from the torque of the screw is transmitted directly onto a ring gear 44d.
  • the ring gear is mounted onto the shaft by the taperlock device 21 (referred to previously), inserted into a hub 44a.
  • a back plate 44b is mounted to the hub by bolts 44c.
  • the ring gear is mounted to the back plate with bolts 44e.
  • the ring gear transmits power to three input planet gears 47 which in turn transmit power to three output planet gears 48 which are mounted each on respective shafts 46.
  • the power from the three planet gears is then transmitted onto a single sun gear 51 mounted to output shaft 50.
  • the output shaft fits through the generator mounting plate 5a which separates the mid section from the bow section.
  • a mounting bracket 5b complete with mounting clips 5c.
  • This plate is drilled and tapped and fitted with a single mechanical seal 52, gasket 53 and fastening bolts 54 which isolate the two sections, preventing oil from contaminating the generator compartment.
  • a U-shape gasket 12 is placed over the outer edge of the plate to provide a watertight seal for the joining of the mid section to the bow section.
  • the bow section consists of a 0.18" shell 6a, flange ring 6b, electric cable seal box 6c and attachment lug 6d. The flange ring is drilled and tapped for fastening bolts 14.
  • the electric cable seal box is fitted with a rubber seal gasket 16 and compression plug 18 to provide a watertight seal around the cable.
  • An elastomeric adapter coupling 55 joins the sun gear shaft to the generator shaft.
  • the generator 61 is mounted by fastening bolts 62.
  • the bow section is essentially a single shell compartment and is designed such to allow for adequate cooling of the generator.
  • All wetted parts of the Hydroscrew and internal welded attachments are fabricated from type 304 stainless steel with exception of the shaft which is type 416 stainless steel. All internal parts not part of the housing are generally machined from type A36 mild steel with exception of machined internal shafts which are type 1020. For lightness and ease of machining, the planet carrier block is machined from aluminum.
  • the head consisting of aft, mid and bow sections are designed to be assembled in sequential order. First the aft section housing is assembled with a double mechanical seal and then slid over the shaft. The angular contact bearings are then mounted into the sleeves of the mid section. The flange gasket is placed against the aft section flange ring and the mid section housing is slid onto the shaft and fastened. At this point the spacer ring is slid over the shaft and then the taperlock device is mounted into the hub at which point the planet ring gear may be assembled. The planetary gear block may be assembled as one unit including planet gears and sun gear and then slid into the housing and installed against the spacer sleeve and mounting plate.
  • the generator mounting plate is then installed with the U-shape gasket and temporary holding bolts afterwhich the generator with adapter coupling can be aligned and fastened. Finally the bow section housing is placed onto the midsection flange ring and fastened enclosing the generator.
  • oil lubricant should be added into the fill port and the plug replaced.
  • the electric cable may be pulled taut and the compression plug may be tightened.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Retarders (AREA)

Abstract

A rotating apparatus for generating hydro-electric power, this device consists basically of a screw or auger which drives an electric generator by the flow of a river, stream or tidal narrows or any other moving liquid. This invention utilizes an 'Archimedes' type screw or auger. One or more propeller blades may be substituted for the auger. The generator and machine components are encapsulated in a watertight housing. A planetary gear system is coupled to the shaft end and allows for power transmission of the generator shaft at an increased rotational speed. The complete device is held in position near the surface of the moving body of water by a pivot arm linkage which may be anchored to ground by numerous methods depending upon flow conditions. (i.e. surface height fluctuation and freeze patterns).

Description

HYPROSCREW-EIJECTRTC POWER GENERATING DEVTCB
SPECIFICATION
This invention relates to an apparatus which rotates by the flow force of a river, stream, or tidal water producing electric power. The apparatus may be referred to as the "Hydroscrew".
Contemporary devices for hydroelectric power generation consist of high pressure devices built in fixed locations whereby requiring that rivers or streams be artificially damned, affecting the sanctity of the body of water as well as adversely altering the natural habitats of its aquatic life.
Contemporary devices utilize the potential energy of rivers and streams by artificially raising the level or head thus physically altering the shoreline and blocking access paths up and down waterways for migration.
This invention utilizes the kinetic energy of the waterway to drive the apparatus. The invention is portable and may be simply positioned in a moving body of water without altering greatly its flow pattern, physical shape or terrain along the shoreline.
This invention revolutionizes the method of harnessing power from moving bodies of water as it provides an alternative to the utilization of low or high head hydroelectric turbine installations.
The inventive idea of this apparatus is to couple a propulsion device such as a "screw" blade with a generator and position the apparatus in a specific key location of moving water where the flow is greatest, having the greatest kinetic energy. In drawings which illustrate embodiments of the invention, Figure 1 shows a general layout of the complete unit including Hydroscrew, pivot arm linkage, floating connection and piling complete with lockable stop cap. Figure 2 is a detailed cross section of the head end including component parts. Figure 3 shows the tail end of the apparatus including the shaft and screw blade. Figure 4 shows two cross sections of the planetary gear drive.
The Hydroscrew shown in the general arrangement and section drawings is designed to drive a 2000 watt generator or alternator, however, this device can be manufactured larger or smaller to drive most any size generator required.
The Hydroscrew illustrated comprises a shaft 1 having welded to it a helical blade 2 which together are allowed to rotate freely from within a housing 3, 4, 5 and 6. The housing provides a watertight shell encapsulating the internal machine components and generator 61.
The shaft and screw section of the apparatus shall be referred to as the "tail". The housing and internal components shall be referred to as the "head". The head is divided into three compartments; aft section, mid section and bow section.
The aft section consists of a 0.18" thick shell 3a, a shaft sleeve 3b, and a flange ring 3c. The shaft sleave is drilled and tapped and fitted with a double mechanical seal 31, gasket 32 and fastening bolts 33 to prevent water from entering the housing.
The mid section consists of 0.18" thick shell 4a with two flange rings 4b and 4c welded to either end. The flange ring 4b is drilled and tapped for placement of watertight gasket 11 and fastening bolts 13. On the top side of the shell an oil intake coupling 4h, O-ring seal 15 and plug 17 are provided. Welded to the mid section housing are two mounting plates 4d and 4e. To these plates are welded each a sleeve 4f and 4g and to each sleeve backing rings 41b and 42b fastened by bolts 41c and 42c. The tail end bearing 41a and the head end bearing 42a are angular contact ball bearings and provide a cantilever shaft mount allowing free rotation. As well, the head end bearing provides thrust restraint from the drag force of the screw. This thrust force is transmitted through the shaft into the taperlock device 21, and then transmitted through the spacer ring 43 onto the head end bearing.
The head end mounting plate 4e is drilled and tapped to suit mounting of the planet gear carrier block 45a which is fastened by pinching the spacer sleave 45d with bolts 45e. The aluminum planet carrier is bored suitably for the mounting of six planet gear bearings 45b and two sun gear bearings 45c.
The planet gear assembly is designed for a input:output ration of 1:12.4. Power from the torque of the screw is transmitted directly onto a ring gear 44d. The ring gear is mounted onto the shaft by the taperlock device 21 (referred to previously), inserted into a hub 44a. A back plate 44b is mounted to the hub by bolts 44c. The ring gear is mounted to the back plate with bolts 44e.
The ring gear transmits power to three input planet gears 47 which in turn transmit power to three output planet gears 48 which are mounted each on respective shafts 46. The power from the three planet gears is then transmitted onto a single sun gear 51 mounted to output shaft 50.
The output shaft fits through the generator mounting plate 5a which separates the mid section from the bow section. Welded to the plate is a mounting bracket 5b complete with mounting clips 5c. This plate is drilled and tapped and fitted with a single mechanical seal 52, gasket 53 and fastening bolts 54 which isolate the two sections, preventing oil from contaminating the generator compartment. A U-shape gasket 12 is placed over the outer edge of the plate to provide a watertight seal for the joining of the mid section to the bow section. The bow section consists of a 0.18" shell 6a, flange ring 6b, electric cable seal box 6c and attachment lug 6d. The flange ring is drilled and tapped for fastening bolts 14. The electric cable seal box is fitted with a rubber seal gasket 16 and compression plug 18 to provide a watertight seal around the cable. An elastomeric adapter coupling 55 joins the sun gear shaft to the generator shaft. The generator 61 is mounted by fastening bolts 62. The bow section is essentially a single shell compartment and is designed such to allow for adequate cooling of the generator.
All wetted parts of the Hydroscrew and internal welded attachments are fabricated from type 304 stainless steel with exception of the shaft which is type 416 stainless steel. All internal parts not part of the housing are generally machined from type A36 mild steel with exception of machined internal shafts which are type 1020. For lightness and ease of machining, the planet carrier block is machined from aluminum.
The head consisting of aft, mid and bow sections are designed to be assembled in sequential order. First the aft section housing is assembled with a double mechanical seal and then slid over the shaft. The angular contact bearings are then mounted into the sleeves of the mid section. The flange gasket is placed against the aft section flange ring and the mid section housing is slid onto the shaft and fastened. At this point the spacer ring is slid over the shaft and then the taperlock device is mounted into the hub at which point the planet ring gear may be assembled. The planetary gear block may be assembled as one unit including planet gears and sun gear and then slid into the housing and installed against the spacer sleeve and mounting plate. The generator mounting plate is then installed with the U-shape gasket and temporary holding bolts afterwhich the generator with adapter coupling can be aligned and fastened. Finally the bow section housing is placed onto the midsection flange ring and fastened enclosing the generator.
After the unit is assembled, oil lubricant should be added into the fill port and the plug replaced. The electric cable may be pulled taut and the compression plug may be tightened. BILL OF MATERIALS
PARITY DESCRIPTION
SHAFT - I.25"DIA./I.I8I"DIA. - MATL 4I6SS PSQ
2a HELIX BLADE - 1/8" THICK PLATE - MAT 304SS 2b OPTIONAL - DOUBLE/TRIPLE/MULTI HELIX BLADES 3α HOUSING-AFT SECTI0N42"X5" CONC. REDUCER-SCH.IOS-MATL 304SS 3b SHAFT SLEEVE - 5.295"0.D.X2.000"I.D.X2.250"LG. - MATL 304SS 3c FLANGE RING-AFT SECTI0N-0.325"XI4.500"0.D.XII.000"I.D.-MATL 304SS 4α HOUSING-MID SECTION-12" PIPE X I9.905"LG.-SCHJ0S-MAT'L 304SS
4b FLANGE RING-MID SECTI0N-I.500"XI4.500 .D.XI2.000'Ϊ.D.-MATL 304SS 4c FLANGE RING-MID SECTI0N-0.750"XI4.500O.D.XI2.390"I.D.-MATL 304SS 4d MOUNTING PLATE-0.250"XI2.390O.D.X2.375"I.D.-MATL 304SS 4e MOUNTING PLATE-O.375"XI2.390 .D.X2.38O"I.D -MATL 304SS 4f BEARING SLEEVE4.I89"X4.250O.D.X2.835"I.D.-MATL 304SS
4g BEARING SLEEVE-I.I89"X4.250"0.D.X2.835"I.D.-MATL 304SS
4h LUBRICATION FILL HALF COUPLING-I" DIA. C/W PLUG-MATL 304SS
5α GEN/ALT MOUNTING PLATE-0.250"XI4.250"0.D.XI.250"I.D.-MATL A36 5b GEN/ALT MOUNTING BRACKET-MAT! A36 5c 2 GEN/ALT MOUNTING CLIPS-MATL A36 6α HOUSING-BOW SECTI0N-I2TIPE X 8J56"LG.-CAP-SCHJ0S-MATL 304SS 6b FLANGE RING-BOW SECTI0N-I.5"XI4"0.D.XI2.39"I.D.-MATL 304SS 6c ELECTRIC CABLE SEAL BOX-I l/2"I.D.-MAT'L 304SS 6d ATTACHMENT LUG-MAT'L 3I6SS
GASKET-l/8"-MAT'L GARLOCK
12 GASKET-U SHAPE-I/8THICK-MATL BUNA RUBBER
13 B0LT-7/l6"XI"UNC-MATL 3I6SS
14 B0LT-7/l6"XI !/2"UNC-MAT'L 3I6SS
15 O-RING SEAL-OIL LUBRICATION FILL COUPLING-MAT'L BUNA RUBBER 16 SEAL GASKET-ELECTRIC CABLE SEAL BOX-MATERIAL BUNA RUBBER
17 PLUG-r-OL LUBRICATION FILL COUPLING-MAT'L 304SS 18 PLUG-I l/2"-ELECTRIC CABLE SEAL BOX-MATL 304SS 21 TAPERLOCKING DEVICE-KEYLESS-SIZE I 3/16" BILL OF MATERIALS
PARTQTY DESCRIPTION
31 DOUBLE MECHANICAL SEAL-ELASOMER O-RING CARTRIDGE-I.25"B0RE 32 GASKET-GARLOCK 33 4 B0LT-3/8"X2 I/4--MATL 3I6SS
4lα I BEARING-ANGULAR CONTACT BALL-DOUBLE R0W-30MM ID. X 72MM O.D.
41b BACKING RING-3/l6"X4.25,O.D.X2.5"LD.-MATL 3I6S.S.
41c 4 B0LT-I/4"XI"-MATL 3I6SS
42α BEARING-ANGULAR CONTACT BALL-DOUBLE R0W-30MM ID. X 72MM O.D.
42b BACKING RING-3/l6"X4.25"0.D.X2.5"LD.-MATL 3I6S.S.
42c 4 BOLT-l/4'Xr-MATL 3I6SS
43 SPACER RING-0.500"XI.I90"I.D.X3.500O.D.-MATL A36
44α HUB-RING GEAR-I.620"X3.500"0.D.X2.I65"I.D.-MAT'L 1020
44b BACK PLATE-RING GEAR-I/4"X8.25"0.D.X2.I65"I.D.-MATL A36
44c B0LT-HUB-3/8"XI"UNF SAE GR.5
44d RING GEAR-l"FACE-2ODEG. PRES. ANGLE-12 PITCH-7.0"P.D.-84T
44e BOLT-RING GEAR-I/4"XI"UNF SAE GR.5
45α PLANET CARRIER BL0CK-2.000"XI2.390"0.D.-MATL ALUMINUM
45b BEARING-DEEP GROOVE BALL-TWO SEALS-3/4"XI 7/8"O.D.
45c BEARING-DEEP GROOVE BALL-TWO SEALS-3/4"XI 7/8"O.D.
45d SPACER SLEEVE-5.592"XI2.390"0.D.XII.750"I.D.-MATL 1026 D.O.M.
45e BOLT-l/2"X8"-UNC GR.5
46 SHAFT-0.750"DIA.X5.750"-MAT'L 1020
47 PLANET GEAR-SPUR-I"FACE-20DEG. PRES. ANGLE-12 PITCH-I.5T.D.-I8T
48 PLANET GEAR-SPUR-I"FACE-20DEG. PRES. ANGLE-12 PITCH-4.0T.D.-48T
50 SHAFT-0.75"DIA.X7.75"-MAT'L 1020
51 SUN GEAR-SPUR-I ACE-2ODEG. PRES. ANGLE-12 PITCH-I.5 .D.-I8T
52 SINGLE MECHANICAL SEAL-ELASTOMER O-RING CARTRIGE-IJ8l"BORE
53 GASKET-GARLOCK
54 B0LT-l/4"X3/4"-UNC-GR.5
55 ADAPTER COUPLING-BORE 0.75"DIA. X 0.625"DIA.-0.I875"KEY-MATL 1020
61 GENERATOR/ ALTERNAT0R-750RPM-I2V0LT
62 B0LT-3/8"X4.5"-UNC-GR.5
63 ELECTRIC CABLE-PVC ARMOURED TECH.

Claims

INTRODUCTION TO CLAIMSThe embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A portable apparatus for generating hydroelectric power held underwater in rivers, streams or moving tidal waters, this apparatus consists of a rotating power generating device, a link arm, a float mechanism and a piling anchor all together assembled making a complete unit.
2. The rotating power generating device referred to as the "Hydroscrew" defined in claim 1 comprising of a shaft mounted spiral screw blade coupled to a gear speed increaser and an electric generator or alternator, thrust type bearings, mechanical seals and other miscellaneous machined parts all encapsulated in a watertight hydrodynamic housing.
3. The link arm defined in claim 1 comprising of a buoyant tube with pivots .on either end allowing for proper positioning of the Hydroscrew in the laminar flow region of the river, stream or moving tidal water.
4. The float defined in claim 1 comprising of a buoyant hollow cylindrical tube with a pivot connection allowing for proper positioning of the Hydroscrew close to the surface of the river, stream or moving tidal water.
5. The piling defined in claim 1 comprising of a wooden, concrete or steel pile with a lockable float stop or any other fittings or appurtenances used to secure, fasten, position or guide the Hydroscrew.
PCT/CA2000/000657 2000-06-02 2000-06-02 The hydroscrew-electric power generating device WO2001092719A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU53780/00A AU5378000A (en) 2000-06-02 2000-06-02 The hydroscrew-electric power generating device
PCT/CA2000/000657 WO2001092719A1 (en) 2000-06-02 2000-06-02 The hydroscrew-electric power generating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA2000/000657 WO2001092719A1 (en) 2000-06-02 2000-06-02 The hydroscrew-electric power generating device

Publications (1)

Publication Number Publication Date
WO2001092719A1 true WO2001092719A1 (en) 2001-12-06

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Application Number Title Priority Date Filing Date
PCT/CA2000/000657 WO2001092719A1 (en) 2000-06-02 2000-06-02 The hydroscrew-electric power generating device

Country Status (2)

Country Link
AU (1) AU5378000A (en)
WO (1) WO2001092719A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4816697A (en) * 1987-02-05 1989-03-28 Nalbandyan Nikolaes A Portable hydroelectric power unit
GB2311566A (en) * 1996-03-29 1997-10-01 I T Power Limited Column mounted water current turbine
US5798572A (en) * 1996-04-15 1998-08-25 Lehoczky; Kalman N. Under water hydro-turbine energy generator design
DE29721671U1 (en) * 1997-11-04 1999-02-04 Hoppe, Jens M. C., 55218 Ingelheim Screw for absorbing the energy of flowing water or moving air (wind)

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4816697A (en) * 1987-02-05 1989-03-28 Nalbandyan Nikolaes A Portable hydroelectric power unit
GB2311566A (en) * 1996-03-29 1997-10-01 I T Power Limited Column mounted water current turbine
US5798572A (en) * 1996-04-15 1998-08-25 Lehoczky; Kalman N. Under water hydro-turbine energy generator design
DE29721671U1 (en) * 1997-11-04 1999-02-04 Hoppe, Jens M. C., 55218 Ingelheim Screw for absorbing the energy of flowing water or moving air (wind)

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Publication number Publication date
AU5378000A (en) 2001-12-11

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