FI773830A - Skyddshjaelm - Google Patents

Skyddshjaelm

Info

Publication number
FI773830A
FI773830A FI773830A FI773830A FI773830A FI 773830 A FI773830 A FI 773830A FI 773830 A FI773830 A FI 773830A FI 773830 A FI773830 A FI 773830A FI 773830 A FI773830 A FI 773830A
Authority
FI
Finland
Prior art keywords
skyddshjaelm
Prior art date
Application number
FI773830A
Other languages
English (en)
Finnish (fi)
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 FI773830A publication Critical patent/FI773830A/fi

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
FI773830A 1976-12-20 1977-12-19 Skyddshjaelm FI773830A (fi)

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
FI773830A true FI773830A (fi) 1978-06-21

Family

ID=10466895

Family Applications (1)

Application Number Title Priority Date Filing Date
FI773830A FI773830A (fi) 1976-12-20 1977-12-19 Skyddshjaelm

Country Status (6)

Country Link
US (1) US4307471A (no)
CA (1) CA1107901A (no)
FI (1) FI773830A (no)
GB (1) GB1578351A (no)
NO (1) NO774361L (no)
SE (1) SE7714424L (no)

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Also Published As

Publication number Publication date
CA1107901A (en) 1981-09-01
NO774361L (no) 1978-06-21
GB1578351A (en) 1980-11-05
SE7714424L (sv) 1978-06-21
US4307471A (en) 1981-12-29

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