Device for gripping and supporting articles

Details Device for gripping and supporting articles Device for gripping and supporting articles

1998-05-06

2000-04-25

Kramer, Dean J.

Handling: hand and hoist-line implements

Spacing hoist bar or frame

Load supporting units

294 8151, B66C 128

Patent

active

060535504

ABSTRACT:
An improved lifting apparatus is provided for lifting joist sections to facilitate placement in a building structure. The apparatus includes a structural frame that is secured to a beam lifted by an erection crane. Plural grasping members such as a series of hooks extend outwardly from the frame and are disposed on opposite sides of the beam for simultaneously gripping and releasing the individual joist members that comprise the joist section. The hooks are urged by a biasing spring toward one of a release and gripping positions and a locking assembly cooperates with the individual hooks to prevent inadvertent movement of the hooks.

REFERENCES:
patent: 2119547 (1938-06-01), Knerr
patent: 2360740 (1944-10-01), Sturdy
patent: 2669479 (1954-02-01), Louckes
patent: 2901311 (1959-09-01), Reel
patent: 3220760 (1965-11-01), Buchik et al.
patent: 4462627 (1984-07-01), Kudlicka
patent: 4486120 (1984-12-01), Landry, Jr.
patent: 4563031 (1986-01-01), Kishimoto et al.
patent: 5350210 (1994-09-01), Barnett et al.
patent: 5820184 (1998-10-01), Echenay

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