Title: Ski construction of the torsion box type

Abstract: A ski of the torsion box type with a foam core and an inner torsion box provided between an outer torsion box and the core.

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Inventors: Bjertnaes, Gunnar (2820 Biri, NO)

Application Number: 638280
Filing Date: 1975-12-05
Publication_date: 1977-02-01
Assignee:
Primary Class(es): 280/610
Other Classes:
US Patent Ref:

3503621	Mar, 1970	Schmidt et al.	280/610.
3635482	Jan, 1972	Holman	280/610.
3918731	Nov, 1975	Legrand	280/610.
3940157	Feb, 1976	Sakuma	280/11.

Other Refs: 1,916,043

Oct, 1970	DT

Primary Examiner: Peters, Jr., Joseph F.
Assistant Examiner: Mitchell, David M.
Attorney: Cushman, Darby & Cushman