Land vehicles – Ski or skate appliance or attachment – Combined
Patent
1981-04-15
1983-09-06
Mitchell, David M.
Land vehicles
Ski or skate appliance or attachment
Combined
280821, 280823, 135 66, 30161, A63C 1122
Patent
active
044025297
ABSTRACT:
A ski pole has a handle in which at least one ice-ax blade is pivotally mounted and blocked in a retracted position by a detent which can be released to permit this blade to swing out and lock in an extended position. The pole shank may be formed from two interconnected but separable portions so that the portion joined to the handle can form the shaft of the ice-ax.
REFERENCES:
patent: 576862 (1897-02-01), Lebold
patent: 1415887 (1922-05-01), McWilliams
patent: 1580528 (1926-04-01), Perkins
patent: 2494878 (1950-01-01), Jensen
patent: 3525532 (1970-08-01), Baldsiefen
patent: 4023221 (1977-05-01), Cadman
patent: 4172601 (1979-10-01), Hutter
patent: 4288102 (1981-09-01), Ramer
Dubno Herbert
Kerma Societe A Responsabilite Limitee
Mitchell David M.
Roesch Timothy
Ross Karl F.
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