$\require{mediawiki-texvc}$

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison, Kafe, Webinar 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

Reduced complexity automatic fiber placement apparatus and method 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • B29C-070/38
  • B32B-037/00
  • B29C-070/54
출원번호 US-0045792 (2013-10-03)
등록번호 US-9884472 (2018-02-06)
발명자 / 주소
  • McCowin, Peter D.
출원인 / 주소
  • THE BOEING COMPANY
대리인 / 주소
    Yee & Associates, P.C.
인용정보 피인용 횟수 : 0  인용 특허 : 162

초록

A method of forming a composite layup on a substrate comprises: moving an automatic fiber placement head over the substrate; using the fiber placement head to lay down multiple, parallel strips of composite tape on the substrate, including staggering the start of at least certain of the tape strips

대표청구항

1. A fiber tape placement apparatus for placing fiber tape on a substrate, the fiber tape placement apparatus consisting of only: a plurality of tape supply devices each holding a supply of fiber tape;a device for compacting the fiber tape on the substrate;a first pivoting arm having a first end loc

이 특허에 인용된 특허 (162)

  1. Pippel James J. (Rockford IL) Messner Bernd A. K. (Rockford IL), Adaptive control for tape laying head having natural path generation.
  2. Klaus Kulper DE; Frank Ganschow DE, Adhesive tape based on a binder-consolidated web.
  3. Onozato Takashi (Morioka JPX), Angular initialization method for orientating a cutting edge portion in a cutting plotter.
  4. Evans Charles B. (both Of Arlington TX) Murray William J. (both Of Arlington TX), Apparatus and method for manufacturing composite structures.
  5. Kaczkowski, Krzysztof, Apparatus and process for placement of sealing adhesives on containers.
  6. Off Joseph W. A. (Irving TX) Early Judson H. (Dallas TX) Greer William B. (Grand Prairie TX), Apparatus for depositing adhesive strips.
  7. Bourrieres Pierre (Cahors FRX), Apparatus for forming a filament-wound structure on a cylindrical pole.
  8. Murray William J. (Midlothian TX), Apparatus for forming concave tape wrapped composite structures.
  9. Manabe Takao (Shizuoka JPX) Yamakawa Yuhei (Shizuoka JPX) Shin Shoichi (Shizuoka JPX) Yamada Hideyuki (Shizuoka JPX) Nagashima Mitsuo (Atami JPX) Kokubo Mitsunori (Mishima JPX) Tsunada Masafumi (Numa, Apparatus for manufacturing laminated prepreg members.
  10. Curry Wilbur R. (Milford OH), Apparatus for sizing composite tows.
  11. Rydningen Toni,NOX, Arrangement for optic measuring of both width and thickness of an object moving along a straight path.
  12. Nelson,W. Robert; Dowling,Michael C.; Stephen,Mark K.; Royal,Raymond L.; Harbaugh,C. Tim, Automated fabric layup system and method.
  13. Oldani,Tino; Jarvi,Daniel, Automated fiber placement using multiple placement heads, replaceable creels, and replaceable placement heads.
  14. August Arthur (Smithtown NY) Huber John G. (Sayville NY), Automated integrated composite lamination system.
  15. Blad Leiv H. (Van Nuys CA), Automated lay-up machine.
  16. Foley Michael (Cambridge MA), Automated manufacturing costing system and method.
  17. Jackson Dana B. ; Halcomb Ronald G. ; Asher Don L. ; Vogt John E., Automated material delivery system.
  18. Brown Christopher L. (Arlington TX) Ashcraft Harry C. (Orlando FL) Tichenor Daniel R. (Maple Valley WA) Garcia Robert M. (Laguna Hills CA), Automated tape laminator head for thermoplastic matrix composite material.
  19. Hailey Samuel I. (Fort Worth TX) Alden John W. (Fort Worth TX), Automated tape laying machine for composite structures.
  20. Nozaka Yoshiki (Tokyo JPX), Automatic adhesive double coated tape applying device.
  21. Sana, Toshikazu; Murai, Akira; Bandoh, Shunichi, Automatic prepreg laminating method and apparatus for carrying out the same.
  22. Higgins Bobby L. (Dallas TX), Automatic tape lay-up system.
  23. Marlow, Christopher I.; Wiltshire, Anthony R.; Hulme, Ivan E., Automatic tape laying apparatus.
  24. Tingley, Mark Curtis, Backing film wind-up in a fiber placement machine.
  25. Johnson John A. (Magna UT) Shepherd Noel I. (Grantsville UT) Shupe Keith G. (Bountiful UT) Nielsen James P. (West Valley City UT), Band fiber forming and placement delivery head.
  26. Frank, Ed, Bi-directional applicator head.
  27. Frank, Ed, Bi-directional applicator head with dual tape supply.
  28. Frank Ed (Glenolden PA), Bi-directional step-over tape applicator head.
  29. Ballentine Robert H. (Ridley Park PA), Bi-directional tape applicator head and method.
  30. Darrieux Jean-Louis (Merignac FRX), Cassette for the storage and dispensing of thread or ribbon at a preset tension.
  31. Druckman Ralph D. ; Burnham Richard C. ; Griffing James S. ; Indharasophang Chai Y. ; Dewar Paul S. ; Spane Marc A. ; Hodgman Tom F.,DEX ; Button Scott D., Combined mortise and tenon joint feature.
  32. Druckman Ralph D. ; Burnham Richard C. ; Griffing James S. ; Indharasophang Chai Y. ; Dewar Paul S. ; Spane Marc A. ; Hodgman Tom F.,DEX ; Button Scott D., Combined mortise and tenon joint feature.
  33. Frank Ed (Glenolden PA), Compliant tape dispensing and compacting head.
  34. Holmes, Scott T.; McIlroy, Bruce E.; Engelbart, Roger W.; Lawton, Stanley A., Composite material collation machine and associated method for high rate collation of composite materials.
  35. Kitson Lee E. (North Hills PA) Rock Dennis K. (Spring Mount PA) Eder James E. (Cheltenham PA), Composite material laser flaw detection.
  36. Johnson, Brice A.; Carbery, David J., Composite material placement method and system.
  37. Hunter, Kipplan; Liguore, Salvatore L., Composite material with improved damping characteristics and method of making same.
  38. Hauber,David E.; Langone,Rob J.; Martin,James P.; Miller,Scott F.; Pasanen,Michael J., Composite tape laying apparatus and method.
  39. Weiss Olin E. (Anneta North TX) Davis Grant L. (Fort Worth TX) Hudson James L. (Azle TX) Dowell Harlan T. (Fort Worth TX), Composite tape laying apparatus including means for plural longitudinal and transverse cuts.
  40. Weiss Olin E. (Anneta North TX) Davis Grant L. (Fort Worth TX) Hudson James L. (Azle TX) Dowell Harlan T. (Fort Worth TX), Composite tape laying machine.
  41. Grone, Robert J.; Schnell, Leonard R.; Vearil, Wayne L., Composite tape laying machine and method.
  42. Grimshaw Michael N. (Milford OH) Albers Stephen J. (Norwood OH) Rust Ralph J. (Cheviot OH), Composite tape laying machine having scrap removal and method.
  43. Grone Robert J. (Elsmere KY) Grimshaw Michael N. (Loveland OH), Composite tape laying machine with pivoting presser member.
  44. Lewis Henry W. (Rockford IL) Romero Jorge E. (Rockford IL), Composite tape placement apparatus with natural path generation means.
  45. Eaton Homer L. (652 Neptune Ave. Leucadia CA 92024), Composite tape preparation and application.
  46. Eaton Homer L. (Leucadia CA), Composite tape preparation and application.
  47. Rajala Gregory John (Neenah WI), Controlling web tension by actively controlling velocity of dancer roll.
  48. Boll, David J.; Lowe, Kenneth A.; McCarvill, William T.; McCloy, Michael R., Cure-on-the-fly system.
  49. Hegyi Tim T. (Lomita CA), Digitizing system for tape placement apparatus.
  50. Vivirito, Joseph R.; Kuchta, Richard, Dual sharpener apparatus for maintaining the sharpness of the cutting edge on blades used to cut sheet-type work materials.
  51. Bolza-Schnemann Claus A. (Wrzburg DEX), Edge location measuring head.
  52. Ely, Paul Alexander, Endcap assembly for a stowage bin.
  53. Novak Ronald E. (Seattle WA), Feed through dimensional measurement system.
  54. Hale, Richard D.; Vasey-Glandon, Virginia M., Fiber placement and fiber steering systems and corresponding software for composite structures.
  55. Shupe Keith G. (Bountiful UT) Hatch Boyd L. (Salt Lake City UT), Fiber placement delivery system with modular cut/add actuators.
  56. Vaniglia Milo M. (Southgate KY), Fiber placement head.
  57. Barr Roy L. ; Bloch Daniel D. ; Mallow Andrew R. ; Rhodes Charles A., Fiber placement mid-span redirect.
  58. Martinez, Manuel Torres, Fiber strip multiapplicator head and method for applying the fiber strips.
  59. Alenskis Brian A. (Bountiful UT) Geil Gerald L. (Diamond Bar CA) Gill Dee R. (Sandy UT) Moloney Brian N. (West Valley City UT), Filament winding system.
  60. Benson Vernon M. (South Jordan UT) Gill Dee R. (Seattle WA) Hatch Boyd L. (Salt Lake City UT) Johnson John A. (Magna UT) Moloney Brian (Billings MT) Shepherd Noel I. (Grantsville UT) Shupe Keith G. (, Filament winding system.
  61. Steelman, Ronald S.; David, John R., Film lamination and removal system and methods of use.
  62. Matsuo Takao (Hyogo JPX) Hamamura Fumio (Kanagawa JPX) Sumi Shigeo (Saitama JPX), Film peeling method and apparatus.
  63. Baker Richard W. (Anoka MN), Film-width and transmittance scanner system.
  64. August Arthur (Smithtown NY) Huber John G. (Sayville NY), Gantry for use in the manufacture of laminar structures.
  65. Hagman, Thomas J.; Bunker, Mark S., Graphite tape supply and backing paper take-up apparatus.
  66. Tang, Wei-Pai; Su, Timothy F., Head assignment modeling and simulation.
  67. Tang, Wei-Pai; Jones, Alan K.; Gonsor, Daniel E., Head assignment system and method.
  68. Baan Robert L. (Wallkill NY) Damore Paul J. (Fishkill NY), High speed laser/air slide dimensional measurement tool.
  69. Crouch Donald W. (Newtown Square PA), High-potential testing of vacuum-type circuit interrupters.
  70. Liguore,Salvatore L.; Montgomery,Joshua M.; Younie,Mark L.; Rackl,Robert G., Integrally damped composite aircraft floor panels.
  71. Thunhorst,Kristin L.; Pitzen,James F., Laminate from which decorative films can be applied to a substrate.
  72. Nagata, Toru; Suzuki, Kenji; Iwata, Tetsu; Ochiai, Hiroshi; Yasui, Yoshinari, Laminating film and laminating method using it.
  73. Lauder, Arnold J.; McDonald, Trevor M.; Ledet, Roger J.; Boonstra, David; Ferreira, Antonio; Barrett, Kevin C.; Yestrau, John, Machine assisted laminator and method.
  74. Lauder, Arnold J.; McDonald, Trevor M.; Ledet, Roger J.; Boonstra, David; Ferreira, Antonio; Barrett, Kevin C.; Yestrau, John, Machine assisted laminator and method.
  75. Barnes Carl K. (Suffield CT) Barnes John O. (Suffield CT), Machine for printing measuring tape.
  76. Cahuzac Georges Jean Joseph (Le Bouscat FRX) Jollivet Bernard Andre (Le Haillan FRX) Baudry Jean-Claude (Pessac FRX) Dubearn Bruno (Merignac FRX) Sabary Laurent (Carbon-Blanc FRX), Machine for the simultaneous laying down and winding of a plurality of individual fiber rovings.
  77. Merton, Christopher A., Magnetic recording medium having a smooth biaxially tensilized film substrate.
  78. Guo Feng Xu ; Linas Repecka ; Steve Mortimer GB; Steve Peake ; Jack Boyd, Manufacture of void-free laminates and use thereof.
  79. Wampler, Robert Ray; Zia Ullah, Muhammad, Material placement method and apparatus.
  80. Wampler, Robert Ray; Zia Ullah, Muhammad, Material placement method and apparatus.
  81. Briese,William; Grismer,John, Method and apparatus for applying aligned tape patterns.
  82. McCowin Peter D. (Federal Way WA) Meredith Brent R. (Fullerton CA), Method and apparatus for delivering a resin-impregnated, multifilament band.
  83. Kuehn ; Jr. Riley (Auburn WA), Method and apparatus for fabricating elongate laminated structures.
  84. Shin Shoichi (Shizuoka JPX) Kawano Makoto (Numazu JPX), Method and apparatus for making pre-cut pre-preg tape.
  85. Hu, Charles Yuanxin; Cooper, David Edward, Method and apparatus for simulating composite panel manufacturing.
  86. Kittelson Jeff L. (Fort Worth TX) Campbell James H. (Fort Worth TX), Method and apparatus for tape winding on irregular shapes.
  87. Wallen,Todd Alan; Ward,William Eric; LaChapelle,Gerald P., Method and system for capturing, managing and disseminating manufacturing knowledge.
  88. Wallen, Todd Alan; Ward, William Eric; LaChapelle, Gerald P., Method and system for capturing, managing, and disseminating manufacturing knowledge.
  89. McGee Mark G., Method and system for fabrication of composite parts.
  90. Erickson, Leif O.; Slagter, Michael G.; Stickrod, Jon E.; Thunhorst, Kristin L.; Pitzen, James F., Method for applying designs to a substrate.
  91. Shinno Nobuo (Osaka JPX) Shigematsu Toshikazu (Osaka JPX), Method for controlling tape affixing direction of automatic tape affixing apparatus.
  92. Scott Holmes ; Stanley A. Lawton ; John M. Haake, Method for heating and controlling temperature of composite material during automated placement.
  93. Hogg, Merrill W., Method for laying composite tape.
  94. Grimshaw Michael N. (Milford OH) Albers Stephen J. (Norwood OH) Rust Ralph J. (Cheviot OH), Method for laying cut composite tape on a mold having scrap removal.
  95. Youngkeit Dean C. (Willard UT), Method for making a composite component using a transverse tape.
  96. Manabe Takao (Shizuoka JPX) Yamakawa Yuhei (Shizuoka JPX) Shin Shoichi (Shizuoka JPX) Yamada Hideyuki (Shizuoka JPX) Nagashima Mitsuo (Atami JPX) Kokubo Mitsunori (Mishima JPX) Tsunada Masafumi (Numa, Method for manufacturing laminated prepreg members.
  97. Bostanjoglo,Georg; Cox,Nigel Philip; Wilkenh��ner,Rolf, Method for producing a three-dimensional moulded body.
  98. Siempelkamp Dieter (Krefeld DEX) Gtz Wolfgang (Krefeld-Fischeln DEX), Method of an apparatus for mounting a foil on a plate.
  99. Yamamoto, Masayuki, Method of cutting a protective tape and protective tape applying apparatus using the same method.
  100. DeVlieg, Russell C.; Zaballos, Kenneth P., Method of cutting tow.
  101. Kisch, Robert A.; Kramp, Robert A.; Lum, Matthew K.; Wampler, Robert R., Method of fabricating a composite item.
  102. Moss ; Maurice ; Hill ; Colin Barry ; Rowland ; Michael Roger, Method of making carbon fibers and resin-impregnated carbon fibers.
  103. Browder ; Lewis B., Methods and apparatus for precision guiding a web.
  104. Wilding,Joseph Ray; Olcott,Dennis D., Methods for manufacturing composite aircraft, parts and a family of composite aircraft.
  105. Furukawa Takao,JPX, Microfilm scanner and control method therefor.
  106. Kisch,Robert A.; Kramp,Robert A.; Lum,Matthew K.; Wampler,Robert R., Modular head lamination device and method.
  107. Ostini, Giorgio, Modular unit for converting punching machines from single-punch to multiple-punch.
  108. Vaniglia, Milo M., Motorized cut and feed head.
  109. Wisbey Jerry D. (Cincinnati OH), Multi-tow fiber placement machine with full band width clamp, cut, and restart capability.
  110. Hagen,Allen B.; Hogg,Merrill W.; Jones,Alan K.; Park, legal representative,Jung Soo; Locke,Alan S.; Shirron,Paul J.; Tang,Wei Pai; Williams,Roger L.; Kim,In Kon, Multihead composite material application machine programming method and apparatus for manufacturing composite structures.
  111. Benson Vernon M. ; Gill Dee R. ; Nielsen James P. ; Mansouri Hosein ; Shepherd Noel I., Multiple axes fiber placement machine.
  112. Koury James L., Multiple fiber placement head arrangement for placing fibers into channels of a mold.
  113. Johnson,Brice A.; Spoon,Stephen S.; Darras,Randal S., Multiple head automated composite laminating machine for the fabrication of large barrel section components.
  114. Martin,James P., Multiple tape laying apparatus and method.
  115. McCowin Peter D. (Federal Way WA), Multiroving fiber laminator.
  116. Ledet, Roger J.; Yestrau, John E., Optical laser guidance system apparatus and method.
  117. Fujimoto, Kazutoshi; Miller, Lloyd G., Overwrap tape end-effector for fiber placement/winding machines.
  118. Nelson,Paul E., Parallel configuration composite material fabricator.
  119. Trudeau Allen E. (Ansonia CT), Parallel processor control of composite material handling.
  120. Dontscheff Helmut (Tacoma WA), Pivotal mount for laminating head.
  121. Lynch George (546 Hull Ct. Burlington ; Ontario CAX), Powered device for controlling the rotation of a reel.
  122. Groppe,David, Precision feed end-effector composite fabric tape-laying apparatus and method.
  123. Zsolnay Andrew M. (Box 374 Manhattan Beach CA 90266) Bendarzewski ; deceased Robert H. (late of Westlake Village CA by Alexandra Bendarzewski ; legal representative), Precision method for placing filaments.
  124. Leclere Klemens (Neu Moresnet BEX) Kessels Hans-Willi (Herzogenrath DEX) Hammes Friedhelm (Herzogenrath DEX), Process for laminating a glass or plastic sheet with a flexible film.
  125. Rust,Ralph John; Grimshaw,Michael North; Hecht,James Richard, Process for laying fiber tape.
  126. Koizumi, Takashi; Kawamura, Yoshinori, Protective sheet peeling device and protective sheet peeling method.
  127. Bloch Paul (109 Greenvillage St. Moodus CT 06469), Retractible fly tying bobbin.
  128. Gill Dee R. (St. Louis MO) Neilsen James P. (West Valley City) Shepherd Noel I. (Grantsville) Weis William J. (Magna) Johnson John A. (Magna) Fujimoto Kazutoshi (Layton UT), Ribbonizing apparatus for individually heating a plurality of laterally adjacent tows in a fiber placement device.
  129. Breyer Phillip ; Harb Douglas L. ; Zevin Thomas M. ; Peter Alexander, Roll tensioner.
  130. Mano, Hiroshi; Ishiyama, Seishiro; Yanagida, Yasuo, Sheet material, a block like sheet material, a method for producing a sheet material, a method for separating and retrieving a fiber fabrication layer unit and a backing layer from a tile carpet.
  131. Fujisawa Hiroyuki,JPX ; Katsuyama Mikizo,JPX ; Funayoshi Toshimitsu,JPX ; Fujimoto Mamoru,JPX, Sheet separator for image recording process.
  132. Fumjo Tojyo JP; Shunzo Hirakawa JP, Sheet thickness and swell measurement method and apparatus therefor.
  133. Thundathil Francis, Single tension adjustment for dual wire rolls.
  134. Ledet,Roger J.; McDonald,Trevor M.; Lauder,Arnold J., Slit-course ply placement device and method.
  135. Stone Kirby L. (Cincinnati OH) Kneifel ; II R. W. (Cincinnati OH) Brockman John P. (Cincinnati OH), Spool servo control for tape web positioning.
  136. Anderson, Conrad V.; Behnke, Brett A.; David, John R.; DePalma, Anne M.; Steelman, Ronald S., Steered vacuum-assisted laminating apparatus and methods of use.
  137. Pugh John H. (Mt. Carmel OH), Strand laying head.
  138. Riemenschneider Paul K. (Grandville MI), Stretch film wrapping device.
  139. Clayton Daniel A. (Bellevue WA) Garriss Gregory M. (Federal Way WA) Long Joe R. (Auburn WA), Strip lay-up verification system with width and centerline skew determination.
  140. Pahr Per O. (Lier NOX), System and a method for optically detecting an edge of a tape.
  141. Collins Steven L. (Yardley PA), System and method for monitoring and controlling the width of a product.
  142. Drumheller, Michael; Jones, Alan K.; Klein, Frederick W., Tape course generation method and apparatus for programming a composite tape lamination machine.
  143. Grant Frederic F. (Bellflower CA) Martija Henry M. (La Verne CA), Tape guiding method and apparatus.
  144. Wisbey, Jerry D., Tape laminator.
  145. Messner Bernd A. K. (Rockford IL), Tape laying head with curved tape laying capability and improved adaptive steering.
  146. Eaton Homer L. (Leucadia CA), Tape laying method and apparatus.
  147. Hagman, Thomas J, Tape removal apparatus and process.
  148. Takami Masaho (9-50 ; Kohrienyamanote-cho Hirakata-shi JPX), Tape rolling up device of package strapping machine.
  149. Charles Paul A. S. (Rockford IL), Tape-laying head.
  150. Polk Jr., Dale E.; Polk, Sr., Dale E., Thermoplastic molding process and apparatus.
  151. McCowin Peter D. (Enumclaw WA), Thermoplastic multi-tape application head.
  152. McCowin, Peter D., Tow width adaptable placement head device and method.
  153. Clark,Randall R.; Engwall,Dwight L.; Yonash,Mark G.; New,Jeffrey A., Unidirectional, multi-head fiber placement.
  154. Ledet,Roger J.; Lauder,Arnold J.; Shewfelt,Mathew J., Vacuum assisted ply placement shoe and method.
  155. Kassuelke Gregory T. ; Long Robert E. ; Haglund Stephen A., Vacuum debulking table for thermoplastic materials.
  156. Ogawa Akihiko,JPX, Vacuum lamination device and a vacuum lamination method.
  157. Ronald S. Steelman ; John R. David, Vacuum-assisted laminator and methods of using the same.
  158. Wells James M. (1164 N. Oakwood Ave. Rialto CA 92376) Sigritz Gary L. (2960 Florine Ct. Riverside CA 92509), Video game console and cartridge cleaning kit.
  159. Luhman Robert A. (Deer Park WI) Tarbutton Kent S. (Lake Elmo MN) Shvartsman Rudolf I. (Ballston Lake NY) Geisel Donald J. (Clifton Park NY) Pilarski Richard J. (Saratoga NY), Web applicator.
  160. Rider Christopher B.,GBX ; Skye David A.,GBX ; Gowans Bruce S.,GBX, Width measurement of an image-bearing sheet.
  161. Koshu Kurokawa JP; Youichi Hayata JP; Akihiro Hashimoto JP, Width measuring apparatus.
  162. Steinhilber Wilhelm A. (Guilford CT), Wire accumulator tower.
섹션별 컨텐츠 바로가기

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

AI-Helper 아이콘
AI-Helper
안녕하세요, AI-Helper입니다. 좌측 "선택된 텍스트"에서 텍스트를 선택하여 요약, 번역, 용어설명을 실행하세요.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.

선택된 텍스트

맨위로