# US 8,770,915 B2 · Hydraulic power generation motor

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,770,915 B2
- Document ID: US8770915B2
- Status: Granted
- Kind: B2
- Application number: 13/122,395
- Filed: 2009-06-19
- Published: 2011-08-04
- Granted: 2014-07-08
- Earliest claimed: 2008-10-10
- Assignees: Myung Ok Hwang
- Applicants: Byung Doo Lim
- Inventors: Byung Doo Lim
- Web page: https://patentgrep.com/patent/US8770915B2

## CPC

- H02K 7/1823: {structurally associated with turbines or similar engines}
- F03B 13/00: Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus (if the apparatus aspects are predominant, see the relevant subclasses for such apparatus, e.g. H02K7/18); Power stations or aggregates (incorporating only machines or engines of positive-displacement type F03C; hydraulic engineering aspects E02B; {combinations with wind energy converters F03D9/008})
- F05B 2220/602: with energy recovery turbines
- Y02B 10/50: Hydropower in dwellings
- Y02E 10/20: Hydro energy
- Y02E 10/30: Energy from the sea, e.g. using wave energy or salinity gradient
- Y02E 60/16: Mechanical energy storage, e.g. flywheels or pressurised fluids
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- F03B: MACHINES OR ENGINES FOR LIQUIDS (positive-displacement engines for liquid F03C; machines for liquids and gases F01; positive-displacement machines for liquids F04, rotary fluid gearing of the hydrokinetic type F16H41/00)
- 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
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A hydraulic power generation motor includes a tubular body (4) including a pair of coupling flanges (12) formed at opposite ends thereof and an impeller housing (8) formed in an intermediate portion thereof, the coupling flanges (12) being connectable to fluid conduits (10) through which fluid flows. An impeller (38) is rotatably installed within the impeller housing (8) of the tubular body (4), the impeller (38) being designed to be rotated by the fluid and operatively connected to a generator (40) for generating an electric power.

## Claims

### Claim 1

A hydraulic power generation motor, comprising:
a tubular body (4) including a pair of coupling flanges (12) formed at opposite ends thereof and an impeller housing (8) formed in an intermediate portion thereof, the coupling flanges (12) being connectable to fluid conduits (10) through which fluid flows; and
an impeller (38) rotatably installed within the impeller housing (8) of the tubular body (4), the impeller (38) being designed to be rotated by the fluid and operatively connected to a generator (40) for generating an electric power,
wherein the impeller housing (8) includes: a circumferential portion (20) having access openings (6) formed at side surfaces thereof; a pair of housing covers (28) attached to the side surfaces to close the access openings (6), each of the housing covers (28) having a shaft-receiving hole (26); a first bearing cover (34a) attached to one of the housing covers (28) to close the shaft-receiving hole (26) and designed to hold a bearing (36) for rotatably supporting the impeller (38); and a second bearing cover (34b) attached to the other housing cover (28) and provided with a through-hole;
wherein the impeller (38) includes an impeller shaft (24) inserted into the shaft-receiving holes (26) of the housing covers (28) and operatively connected to the generator (40), a plurality of vanes extending in a tangential direction from an outer circumferential surface of the impeller shaft (24) and having rounded edges, and a plurality of reinforcing plates (44) arranged to interconnect the vanes (42) in a spaced-apart relationship with the impeller shaft (24) so gaps (46) exist between the reinforcing plates (44) and the impeller shaft (24).

### Claim 2 (depends on 1)

The hydraulic power generation motor of claim 1, wherein at least part of the tubular body (4) comprises a planar bottom surface and a curved top surface.