$\require{mediawiki-texvc}$
  • 검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
  • 검색연산자
검색도움말
검색연산자 기능 검색시 예
() 우선순위가 가장 높은 연산자 예1) (나노 (기계 | machine))
공백 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 예1) (나노 기계)
예2) 나노 장영실
| 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 예1) (줄기세포 | 면역)
예2) 줄기세포 | 장영실
! NOT 이후에 있는 검색어가 포함된 문서는 제외 예1) (황금 !백금)
예2) !image
* 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 예) semi*
"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

통합검색

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.

특허 상세정보

Double-walled structure in a ventilation duct system

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16L-011/00    F16L-009/14   
미국특허분류(USC) 138/129 ; 138/122 ; 138/143
출원번호 US-0113928 (1998-07-10)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Weingarten, Schurgin, Gagnebin & Hayes LLP
인용정보 피인용 횟수 : 25  인용 특허 : 19
초록

A double-walled structure in a ventilation duct system has an inner tube and an outer tube and, arranged therebetween, a sound-absorbing material. The inner tube is a helically-wound lock-seam tube formed from a sheet metal strip having parallel longitudinal areas of expanded metal.

대표
청구항

[ What we claim and desire to secure by Letters Patent is:] [1.] A double-walled structure in a ventilation duct system, comprising:an inner tube;an outer casing spaced from and enclosing said inner tube; anda sound-absorbing material provided between said inner tube and said casing;wherein said inner tube is a helically-wound lock-seam tube formed from a sheet metal strip having at least one longitudinal area of expanded metal.

이 특허에 인용된 특허 (19)

  1. Pettersson Henrik (Mynmki FIX) Lemetyinen Markku (Turku FIX) Sjstrand Esko (Turku FIX). Absorptive sound attenuator, in particular for air ducts in paper mills. USP1993115260523.
  2. Takagi Akinobu (Numazu JPX) Ohtake Isao (Shizuoka JPX) Nakano Osamu (Shizuoka JPX) Murakami Toru (Shizuoka JPX). Air duct and paper therefor. USP1994075325893.
  3. Castricum Wilhelmus P. (Rolling Meadows IL). Apparatus for cutting hollow pipes. USP1989044823579.
  4. Castricum Wilhelmus P. H. (Rolling Meadows IL). Apparatus for cutting spiral pipe. USP1993035193374.
  5. Ikeda Tsukasa (Ohmiya JPX) Tamano Akihiko (Ageo JPX). Apparatus for manufacturing a silencer. USP1995105461777.
  6. Malmsten Sven-Olof (Kista SEX). Exhaust silencer. USP1992115162622.
  7. Fukui Kouki,JPX. Heat insulating noise reducing duct. USP1998085795634.
  8. Van Petten Louis B. (Union Bridge MD). Helically seamed tubing and apparatus and method for making same. USP1976123997098.
  9. Bubb Antony John,GB2. In and relating to machines for forming helically wound lock-seam tubing having multiple wall thickness. USP1998045737832.
  10. Nyssen James (10045 Kenswood Dr. Chilliwack ; British Columbia CA). Method and apparatus for making multi-layer spiral pipe. USP1979074160312.
  11. Lennartsson Kenneth,SEX. Method and apparatus for producing helically wound lock-seam tubing. USP1998025720095.
  12. Lesage Claude,CAX ; O'Donnell Gerry. Method and apparatus for the fabrication of metal cylinders. USP1998035722149.
  13. Roos Erling (Upplands Vasby SW). Method for insulating tubing. USP1976083974013.
  14. Morhard Alfred (Knigsberger Str. 24 7272 Altensteig-Waldd. DEX). Method for making helically wound surface-coated tubes, and apparatus for carrying out this method. USP1983064387498.
  15. Tamano Akihiko (Ageo JPX) Ikeda Tsukasa (Ohmiya JPX). Method for manufacturing silencer and apparatus for manufacturing same. USP1996015479706.
  16. Potter Stannard M. (Glastonbury CT). Muffler for pile driving apparatus. USP1976093981378.
  17. Ohtaka Akihiko (Hamamatsu JPX) Yoshitoshi Nobuyuki (Hamamatsu JPX) Kimura Shigeo (Hamamatsu JPX) Houjou Taketoshi (Aichi-ken JPX) Nimiya Kazuya (Aichi-ken JPX). Silencer. USP1997095670756.
  18. Andrews John S. (Barry EN). Silencer for ventilation ducts. USP1977074034826.
  19. Sucato Edward (3102 N. 24th St. Phoenix AZ 85016) Powers ; III John A. (4118 E. Ellwood St. Phoenix AZ 85040). Stud assembly. USP1997025605024.

이 특허를 인용한 특허 피인용횟수: 25

  1. Robbins, Greg L.; Peterson, Wayne; Zepp, William L.. Corrugated metal vent pipe and associated system and method. USP2018029890877.
  2. Edmond Pol Jean Lepoutre BR. Device for controlling the porosity of a helical, flexible, sound-absorbing air-conducting tube. USP2002056386316.
  3. Marcellus, Dwight A.. Double-walled structure and connection arrangement. USP2003046543575.
  4. Tomerlin, Reg; Harwood, Allen W.; Hoff, Richard; Boyer, David. Flexible muffler for use in aircraft environmental control systems and method of manufacture. USP2013038393436.
  5. Cernea,Raul Adrian. Memory sensing circuit and method for low voltage operation. USP2008057376030.
  6. Farr, Matthias. Method and device for cutting wound hoses. USP20180710016847.
  7. Chan, Siu Lung; Cernea, Raul Adrian. Method for compensated sensing in non-volatile memory. USP2009097593277.
  8. Chan,Siu Lung; Cernea,Raul Adrian. Method for compensated sensing in non-volatile memory. USP2008017324393.
  9. Potter, Russell M.; dePaauw, Ann M.. Method of providing flexible duct having different insulative values. USP2012088245381.
  10. Khalid,Shahzad; Li,Yan; Cernea,Raul Adrian; Mofidi,Mehrdad. Non-volatile memory and method with bit line compensation dependent on neighboring operating modes. USP2007057215574.
  11. Cernea, Raul Adrian; Li, Yan; Mofidi, Mehrdad; Khalid, Shahzad. Non-volatile memory and method with bit line to bit line coupled compensation. USP2009057532514.
  12. Cernea,Raul Adrian; Li,Yan; Mofidi,Mehrdad; Khalid,Shahzad. Non-volatile memory and method with bit line to bit line coupled compensation. USP2007097269069.
  13. Cernea,Raul Adrian; Li,Yan. Non-volatile memory and method with improved sensing. USP2007057212445.
  14. Cernea,Raul Adrian; Li,Yan. Non-volatile memory and method with improved sensing. USP2008097428171.
  15. Cernea,Raul Adrian; Li,Yan. Non-volatile memory and method with reduced bit line crosstalk errors. USP2008107443757.
  16. Cernea, Raul-Adrain; Li, Yan. Non-volatile memory and method with reduced neighboring field errors. USP2012108300457.
  17. Cernea, Raul-Adrain; Li, Yan. Non-volatile memory and method with reduced neighboring field errors. USP2011098023322.
  18. Cernea,Raul Adrian; Li,Yan. Non-volatile memory and method with reduced neighboring field errors. USP2007077239551.
  19. Cernea, Raul Adrian; Li, Yan. Non-volatile memory and method with reduced source line bias errors. USP2009067551484.
  20. Cernea,Raul Adrian; Li,Yan. Non-volatile memory and method with reduced source line bias errors. USP2007037196931.
  21. Cernea, Raul-Adrian. Non-volatile memory with improved sensing by reducing source line current. USP2010127852678.
  22. Cernea, Raul-Adrian. Non-volatile memory with improved sensing by reducing source line current. USP2012108300473.
  23. Cernea, Raul-Adrian. Non-volatile memory with improved sensing by reducing source line current. USP2011118050126.
  24. Chan,Siu Lung; Cernea,Raul Adrian. Reference sense amplifier for non-volatile memory. USP2008027327619.
  25. Cassidy,Stephen; Hunt,Brian; Thomsen,Niels. Textile ducts. USP2008107442121.