Multi-configuration grappling hook system

A retractable grappling hook which comprises:

• a central shaft elongated along a first axis;
• a plurality of tines;
• each of said tines being rotatively connected by a pin to a peripheral area of the shaft and including a short proximal lever portion having an end surface and an outer lateral surface on one side of the pin and an elongated grappling portion on an opposite side of the pin;
• each of said tines being individually pivotable from a deployed position oblique to the shaft to a folded position substantially parallel to the shaft;
• and
• an axially movable head adjustable between a tine-unlocking configuration and a tine-locking configuration;
• wherein the head bears against the end surface of a tine said folded position and against the outer lateral surface of a tine in said deployed position;
• and,
• wherein the head has a tine-contacting undersurface machined to coincidently rest against the end surface of a folded tine and the outer lateral surface of a deployed tine when the head is adjusted to the locking position;
• wherein said undersurface further comprises a peripheral margin chamfered to planarly rest against said end surface.

A retractable grappling hook which comprises:

• a central shaft having a longitudinal first axis and a cross-section radius;
• a head movably secured to a first end of said shaft, said head being axially adjustable in relation to said first end to a proximal locking position, and to a distal unlocking position;
• at least one tine having a pointed extremity and an opposite locking extremity;
• said tine being pivotally secured to said shaft proximately to said locking extremity about a second axis perpendicular to said first axis;
• said head comprising a cap having an undersurface defining a circular, arcuately concave area having a radius centered substantially about said second axis when said head is adjusted to said unlocking position;
• and
• said locking extremity being held against said shaft when said head is adjusted to said locking position.