Collapsible grappling hook

Details Collapsible grappling hook Collapsible grappling hook

2007-07-10

2007-07-10

Kramer, Dean J. (Department: 3652)

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

C294S001200

Reexamination Certificate

active

11475460

ABSTRACT:
A grappling hook comprising a shaft, a head member, a plurality of blades, and a locking ring. The head member is secured to the first end of the shaft. Each of the blades has a distal end with a substantially v-shaped notch forming a pair of projections and at least one gripping tooth for gripping onto a desired structure. Each of the blades is pivotally connected to the head member such that each blade is movable between an operational position and a collapsed position wherein the blades are spread away from the head member and positioned to grip the supporting structure in the operational position, and wherein the blades are positioned adjacent to the shaft in the collapsed position. The locking ring is movable between an open position and a closed position wherein the locking ring secures the blades in the operational position when the locking ring is positioned in the open position, and wherein the locking ring secures the blades in the collapsed position when the locking ring is in the closed position.

REFERENCES:
patent: 19659 (1858-03-01), Williams
patent: 558389 (1896-04-01), Holmes
patent: 1632529 (1927-06-01), Bauer
patent: 3485199 (1969-12-01), Schuman
patent: 3651777 (1972-03-01), Ehrichmann
patent: 3793977 (1974-02-01), Ziegler
patent: 6062621 (2000-05-01), Zelazny
patent: 6079761 (2000-06-01), Sadeck
patent: 6267424 (2001-07-01), Gillatte
patent: 6948751 (2005-09-01), Wooten et al.

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