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특허 상세정보

Method of manufacturing improved protective headgear

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B32B-005/20   
미국특허분류(USC) 156/79 ; 2/3R ; 264/454 ; 264/51
출원번호 US-0452397 (1974-03-18)
우선권정보 NZ-0165908 (1971-12-23)
발명자 / 주소
인용정보 피인용 횟수 : 46  인용 특허 : 0
초록

A method is disclosed for producing a protective helmet, the method comprising placing an inner shell having a dome portion and downwardly extending side portions on a die, positioning a further die so that a cavity is provided between the outer surface of the inner shell and the further die, filling the cavity with pre-foamed beads of polystyrene of selected density, and applying heat to expand the beads to create a continuous layer of shock absorbing material extending over the whole outer surface of the inner shell. Additionally, and subsequent to the...

대표
청구항

A method of producing a protective helmet comprising placing an inner shell having a dome portion and downwardly extending side portions on a die, positioning a further die so that a cavity is provided between the outer surface of the inner shell and the further die, filling the cavity with prefoamed beads of polystyrene of selected density, applying direct steam heat to said beads to expand said beads and create a continuous homogeneous layer of shock absorbing material extending over the whole outer surface of the inner shell and physically adhered to ...

이 특허를 인용한 특허 피인용횟수: 46

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  2. Roberts, Richard W.. Bathtub/shower tray support. USP20181110130220.
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  10. LaRocque, Joey. Helmet. USP201612D774257.
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  13. Asper Jean-Jacques (Croix De Rozon CHX) Cottenceau Rmi (Viry FRX). Helmet for protection against impacts and a method of manufacturing the said helmet. USP1987124710984.
  14. Comstock Scott Patrick ; Comstock Kurt Joseph. Helmet having improved safety features. USP2000026029283.
  15. Jeng Yen-Ming (48 ; Fong Lean Street ; Hsin-Fong ; Hsiang Hsin Chu Hsien TWX). Helmet making process. USP1997035609802.
  16. Lang Ree,Arne; Muller,Hilgard N.. Helmet protection system. USP2006117140049.
  17. Chung, Kirk; Chung, Matthew. Helmet system with interchangeable outer shells. USP2012058166573.
  18. Roberts, Richard W.. In-situ foam core structural articles and methods of manufacture of profiles. USP2015089102086.
  19. Roberts, Richard W.. In-situ foam core structural articles and system for forming. USP2017069688046.
  20. Roberts, Jr., Richard W.. In-situ foam core structural energy management system and method of manufacture. USP2014098840819.
  21. Roberts, Richard W.. In-situ foam core vehicle seating system and method of manufacture. USP2015079073462.
  22. Cahill Kevin J.. Industrial protective helmet. USP1998115829065.
  23. Morton William G. (P.O. Box 841 Hopewell VA 23860). Inter-liner for a safety helmet. USP1977054020507.
  24. Vismara Mario (Casatenovo ITX). Machine for the production of moulded articles of plastic material, in particular of crash helmets for motorcyclists and. USP1987104698001.
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  27. Cutler Phil. Method for making an expanded polystyrene article. USP2001066241926.
  28. Dennis, Mike; Monk, Russell A.. Method for making multi-layer, personnel-protective helmet shell. USP2004106803005.
  29. Hurst Aubrey J. (Rte. No. 3 ; Mercury Dr. Concord TN 37720). Method of making a foamed polystyrene building panel. USP1981044260569.
  30. Martin, James Robert; Schreiber, By Mary L.; Martin, By Theresa Ann. Method of making a hunting decoy. USP2003116640413.
  31. Dennis, Michael R.; Monk, Russell A.. Multi-layer, personnel-protective helmet shell with spray-fabricated inner and outer structural layers. USP2004016671889.
  32. Masahiko Sameshima JP; Yoshiyuki Kobayashi JP; Kenji Yamaguchi JP. Polyolefin synthetic resin in-mold foam molding method. USP2002126500368.
  33. Blair, Mary Lynne. Protective headgear. USP2015038978167.
  34. Paul Schiebl ; Marshall F. Holtsclaw, II. Protective headgear and chin pad. USP2002126499147.
  35. Schiebl Paul ; Holtsclaw ; II Marshall F.. Protective headgear and chin pad. USP2001106298483.
  36. Daly Noel (New Plymouth NZ). Protective headwear. USP1977104051555.
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  38. LaRocque, Joey. Protective helmet. USP201612RE46249.
  39. Gibson, Edwin Lowell. Protective shield for a cap. USP2011067966673.
  40. Blair,Mary Lynne. Protective sports hat insert device. USP2006087096512.
  41. Roberts, Jr., Richard W.. Recyclable plastic structural articles and method of manufacture. USP2016059346237.
  42. Roberts, Richard W.. Recyclable plastic structural articles and method of manufacture. USP20190210207606.
  43. Morton William G. (Box 841 Hopewell VA 23860). Safety helmet with individualized head-contoured inter-liner. USP1977084044399.
  44. Sullivan James B. (343 Main St. Dennisport MA 02639) Fox Richard B. (40 Tri Town Circle Mashpee MA 02649). Shock-absorbing innersole. USP1990034910886.
  45. Roberts, Jr., Richard W.. Structural plastic articles, method of use, and methods of manufacture. USP2016039272484.
  46. Asahara Toshio (1017-31 Ouaza Uchiage ; Neyagawa ; Osaka JPX). Thermally insulated ceramic container and method for manufacture thereof. USP1984054448825.