Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Load releasing means
Patent
1993-08-30
1994-08-23
Cherry, Johnny D.
Handling: hand and hoist-line implements
Hook, hoistline, or grab type
Load releasing means
294 822, B66C 136
Patent
active
053401816
ABSTRACT:
A hook apparatus used to lift, convey and release a heavy structural member, e.g., an iron plate. The hook apparatus includes a hook support (1) having a fall preventing portion (11) at the distal end thereof and a wire securing portion (12) at the proximal end thereof, and a hook (3) having an proximal end portion which has a bifurcated structure including a pair of branched end portions (32 and 32'). The hook (3) is pivotably attached to the hook support (1) through a connecting pin (2) which extends between the branched end portions (32 and 32') and through a central portion (13) of the hook support (1) which is disposed in the space defined between the branched end portions (32 and 32'). A lock (4) is disposed in the space defined between the branched end portions (32 and 32') of the hook (3) to cooperate with the central portion (13) of the hook support (1) to lock the hook support (1) and the hook (3) to each other. The hook (3) is pivotable through approximately 180.degree. reversely relative to the hook support (1) when the hook support (1) and the hook (3) are unlocked from each other by disengaging the lock (4). The hook apparatus further includes a removal assisting lock (6) for assisting the removal of the hook apparatus from the object of lifting. The removal assisting lock (6) includes a lock body (61) disposed on the hook support (1), and an engagement member (62) disposed on the hook (3). Thus, it is possible to lift, convey and release a heavy structural member extremely safely and efficiently.
REFERENCES:
patent: 1847819 (1932-03-01), Davies
patent: 1956786 (1934-05-01), Bemis
patent: 3722943 (1973-03-01), Kalua
patent: 3741600 (1973-06-01), Crook
patent: 4309052 (1982-01-01), Drayton
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