Coupling device

Details Coupling device Coupling device

1991-12-19

1992-10-20

Cherry, Johnny D.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

246006, 246007, A44B 1302, B66C 136

Patent

active

051564300

ABSTRACT:
A coupling device comprises a shaft member having a coupling ring pivotably mounted thereon, a hook, a cylindrical casing and a compression spring. The coupling ring is pivotable into a horizontal position in which the hook, the casing and the spring are removable from the shaft member and into a vertical position in which the hook is rotatable with the casing relative to the coupling ring.

REFERENCES:
patent: 302509 (1984-07-01), Mauthner
patent: 677627 (1901-07-01), Booth
patent: 759805 (1904-05-01), Broga
patent: 967486 (1910-08-01), Avery
patent: 1394068 (1921-10-01), Cousins
patent: 1583326 (1926-05-01), Waller
patent: 1676167 (1928-07-01), Sprain
patent: 3145443 (1964-08-01), Gallagher
patent: 3365759 (1968-01-01), Molzan et al.
patent: 3861007 (1975-01-01), Silverman

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