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US 4,023,606 AGranted
Ice ax, and method and extrusion apparatus for the manufacture thereof
OwnerFranz Kneisslinventor
Life of this patent
Estimating the term…
Abstract
Disclosed is an ice ax comprising a pickax blade, a pickax spur, a handle projecting transversely from the blade connecting the spur and the blade and having a plastic jacket of oval cross section defining a core area of foamed plastic material and means for permanent and rigid anchoring of the blade to the handle whereby a segment of the anchoring means passes through the handle core and rigidly joins another segment of the anchoring means extending from the blade. A method for the manufacture of the ice ax and an apparatus for the extrusion of the plastic jacket and foam core of the ax handle are also disclosed.
Claims10
An ice ax comprising:
- a pickax blade,
- a pickax spur;
- a handle projecting transversely from said blade connecting said spur and said blade and having a plastic jacket of oval cross section defining a core area of foamed plastic material, and
- a pair of rigid members, each member being fixedly attached to said blade and extending opposite one another lengthwise from said blade along the inside surface of the curvature peaks of the oval cross section of said jacket and being connected by a rigid bridge member extending through said core and being of substantially smaller volume than the volume of said core area.
1 more element
Dependencies are inferred from the claim text.