Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Locking device
Patent
1994-11-14
1996-01-02
Kramer, Dean
Handling: hand and hoist-line implements
Hook, hoistline, or grab type
Locking device
245998, B66C 136
Patent
active
054802024
ABSTRACT:
An anti-snag plate for crane hooks, comprising a crane hook having a shank with an upper end and a lower end. The shank is curved and bent in a J-shaped configuration to design an upwardly extending point. The shank has an aperture adjacent to the main aperture. A safety plate is formed of an elongated configuration having an upper end with downwardly extending plates with apertures therethrough positionable in alignment with the minor aperture of the shank. The lower end of the safety plate is formed with a concave recess positionable in contact with the interior surface of the upstanding projection and movable downwardly with respect thereto. An anti-snag plate is formed in a rectangular configuration with an upper end and a lower end. The upper end is formed with downwardly extending plates and apertures therethrough positionable in alignment with the apertures of the safety plate and the minor apertures of the shank. The lower end is positionable upon the upper free end of the projection. A pivot pin is positioned through the minor aperture as well as the apertures of the anti-snag plate and the safety plate and a resilient member positioned upon the upper surface of the anti-snag plate and the lower surface of the safety plate to move such plates together toward the tip of the of projection.
REFERENCES:
patent: 644699 (1900-03-01), Woodford
patent: 797941 (1905-08-01), Corbett
patent: 1209615 (1916-12-01), Obsboum
patent: 4039220 (1977-08-01), Stoops
patent: 4050730 (1977-09-01), Tada et al.
patent: 4440432 (1984-04-01), Goris
patent: 4955651 (1990-09-01), Barber
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