IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0116169
(2002-04-03)
|
발명자
/ 주소 |
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출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
11 |
초록
▼
An aerodynamic blade 12 and method of manufacture wherein the blade includes a tip 14, a root 16, materials comprising skins 18A, 18B, reinforcement strips 20A, 20B, 20C, 20D, glass sheets 22A, 22B, stiffeners 24A, 24B, and pre-cut sheets 26A, 26B, 26C, 26D layered into each of top and bottom molds
An aerodynamic blade 12 and method of manufacture wherein the blade includes a tip 14, a root 16, materials comprising skins 18A, 18B, reinforcement strips 20A, 20B, 20C, 20D, glass sheets 22A, 22B, stiffeners 24A, 24B, and pre-cut sheets 26A, 26B, 26C, 26D layered into each of top and bottom molds 28, 30 using a resin 32 to define a mating perimeter 34 surrounding a depression 36 in said layered materials in each mold 28, 30. The molds 28, 30 are adapted to be mated together to engage the mating perimeters 34, and the depressions 36 define a core cavity 38. The molds 28, 30 are mounted to a mold bracket assembly 41 which enables the molds 28, 30 to be mated together after the blade 12 and materials are prepared. Each blade 12 further includes foam 40 disposed in the depressions 36 for filling the core cavity 38.
대표청구항
▼
An aerodynamic blade 12 and method of manufacture wherein the blade includes a tip 14, a root 16, materials comprising skins 18A, 18B, reinforcement strips 20A, 20B, 20C, 20D, glass sheets 22A, 22B, stiffeners 24A, 24B, and pre-cut sheets 26A, 26B, 26C, 26D layered into each of top and bottom molds
An aerodynamic blade 12 and method of manufacture wherein the blade includes a tip 14, a root 16, materials comprising skins 18A, 18B, reinforcement strips 20A, 20B, 20C, 20D, glass sheets 22A, 22B, stiffeners 24A, 24B, and pre-cut sheets 26A, 26B, 26C, 26D layered into each of top and bottom molds 28, 30 using a resin 32 to define a mating perimeter 34 surrounding a depression 36 in said layered materials in each mold 28, 30. The molds 28, 30 are adapted to be mated together to engage the mating perimeters 34, and the depressions 36 define a core cavity 38. The molds 28, 30 are mounted to a mold bracket assembly 41 which enables the molds 28, 30 to be mated together after the blade 12 and materials are prepared. Each blade 12 further includes foam 40 disposed in the depressions 36 for filling the core cavity 38. ng a lowermost open pool that is larger than, and in fluid communication with, said uppermost open pool of the first set. 4. The fish ladder of claim 3, wherein the open pools of said first set decrease in size in the ascending direction. 5. The fish ladder of claim 3, further comprising a third set of open pools that is beside said second set of open pools, and that is above, and in liquid communication with, said first set of open pools. 6. The fish ladder of claim 3, wherein said stream obstruction is a dam. 7. The fish ladder of claim 3, wherein said single spout is located at a front edge of each of said open pools. 8. A fish ladder for assisting fish in overcoming a stream obstruction, the fish ladder comprising: a lower set of open pools spaced apart a vertical distance that may be easily jumped by fish, each of said open pools having an outer perimeter wall that is substantially within the downstream perimeter of the next lower pool, and said lower set of open pools having an uppermost pool; a transition pool above said lower set of open pools, said transition pool being larger in size than said uppermost pool and having a transition pool outer perimeter wall comprising a transition pool spout adapted to allow overflow of water to said uppermost pool; an upper set of open pools above said transition pool, the open pools of said second set being spaced apart a vertical distance that may be easily jumped by fish and each having an outer perimeter wall that is substantially within the downstream perimeter of the next lower pool in said upper set, and the upper set of open pools having a lowermost pool having a lowermost pool outer perimeter wall comprising a lowermost pool spout adapted to allow overflow of water to said transition pool; wherein said transition spout is horizontally distanced from said lowermost pool spout so that fish jumping up into said transition pool at said transition pool spout will swim horizontally upstream through said transition pool to reach said lowermost pool spout and will jump up into said lowermost pool via the lowermost pool spout, whereby said swimming horizontally upstream through said transition pool provides rest for the fish. 9. The fish ladder of claim 8, comprising a second upper set of open pools above said transition pool and beside said upper set of open pools, the second upper set of open pools being in liquid communication with said transition pool via a second upper set spout that is horizontally distanced from said transition pool spout so that some fish jumping up into said transition pool at said transition pool spout will swim horizontally upstream through said transition pool to reach said second upper set water spout and will jump up into said second upper set of open pools via the second upper set water spout, whereby swimming horizontally upstream through said transition pool provides rest for the fish. 10. The fish ladder of claim 8, wherein said stream obstruction is a dam and the fish ladder is attached to and extends up along a downstream surface of the dam. llapsing each bag (10), biodegrading the gel, re-storing the collapsed bags (10) for re-use. 2. A method as set forth in claim 1 including placing a pouch having the polymer surrounded by a pervious container (20) and bursting the container (20) as the polymer expands. 3. A method of providing a water barrier system comprising the steps of: providing a plurality of bags (10) each made of water impervious material and including a sealable opening (12); and providing a plurality of pouches (18) of a water absorbent polymer that expands and becomes a flowable gel in consistency upon absorbing water and that is biodegradable with the polymer of each pouch (18) having less volume than the maximum volume of each bag (10); further including the step of placing the polymer of one of the pouches (18) in each bag (10). 4. A method as set forth in claim 3 including the steps of: filling each bag (10) with water to expand the bag (10) as the polymer expands into a gel expanding the volume of each bag (10), sealing the opening (12) in each bag (10) to prevent egress of the gel from the bag (10), and stacking the bags (10) to form a water barrier. 5. A method as set forth in claim 4 including the steps of; unstacking the bags (10), unsealing the opening (12) in each bag (10), flowing the gel from each bag (10), biodegrading the gel. 6. A method as set forth in claim 3, wherein each pouch (18) includes a pervious container (20) surrounding the polymer, further including the steps of expanding the polymer in the container and bursting the pervious container in the bag as the polymer expands. sembly for controlling energy applied to the reciprocating assembly in a way that maximizes the linearity of the carriage velocity profile.
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