NO774361L - Beskyttelseshjelm. - Google Patents

Beskyttelseshjelm.

Info

Publication number
NO774361L
NO774361L NO774361A NO774361A NO774361L NO 774361 L NO774361 L NO 774361L NO 774361 A NO774361 A NO 774361A NO 774361 A NO774361 A NO 774361A NO 774361 L NO774361 L NO 774361L
Authority
NO
Norway
Prior art keywords
helmet
shell
studs
helmet according
inner shell
Prior art date
Application number
NO774361A
Other languages
English (en)
Norwegian (no)
Inventor
Peter John Lovell
Original Assignee
Du Pont Canada
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Du Pont Canada filed Critical Du Pont Canada
Publication of NO774361L publication Critical patent/NO774361L/no

Links

Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/06—Impact-absorbing shells, e.g. of crash helmets
    • A42B3/062—Impact-absorbing shells, e.g. of crash helmets with reinforcing means
    • A42B3/065—Corrugated or ribbed shells
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/06—Impact-absorbing shells, e.g. of crash helmets
    • A42B3/062—Impact-absorbing shells, e.g. of crash helmets with reinforcing means
    • A42B3/063—Impact-absorbing shells, e.g. of crash helmets with reinforcing means using layered structures
    • A42B3/064—Impact-absorbing shells, e.g. of crash helmets with reinforcing means using layered structures with relative movement between layers
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/10—Linings
    • A42B3/12—Cushioning devices

Landscapes

  • Helmets And Other Head Coverings (AREA)
NO774361A 1976-12-20 1977-12-19 Beskyttelseshjelm. NO774361L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB53178/76A GB1578351A (en) 1976-12-20 1976-12-20 Protective helmet

Publications (1)

Publication Number Publication Date
NO774361L true NO774361L (no) 1978-06-21

Family

ID=10466895

Family Applications (1)

Application Number Title Priority Date Filing Date
NO774361A NO774361L (no) 1976-12-20 1977-12-19 Beskyttelseshjelm.

Country Status (6)

Country Link
US (1) US4307471A (fr)
CA (1) CA1107901A (fr)
FI (1) FI773830A7 (fr)
GB (1) GB1578351A (fr)
NO (1) NO774361L (fr)
SE (1) SE7714424L (fr)

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Also Published As

Publication number Publication date
SE7714424L (sv) 1978-06-21
US4307471A (en) 1981-12-29
FI773830A7 (fi) 1978-06-21
GB1578351A (en) 1980-11-05
CA1107901A (fr) 1981-09-01

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