Handling: hand and hoist-line implements – Grapple – Pivoted jaws
Patent
1989-12-28
1992-01-07
Cherry, Johnny D.
Handling: hand and hoist-line implements
Grapple
Pivoted jaws
294117, 294118, 294902, B66C 144
Patent
active
050784404
ABSTRACT:
Disclosed is an auxiliary conveyance apparatus for conveying a body to be conveyed very easily in case of emergency including intermediate parts of a pair of arm members, each having a gripping portion and an operating lever on both the ends, respectively, being turnably pivoted, and the arm members being urged by elastic member so that the gripping portions are brought close to each other. An operating member is slidably attached to the operating levers, and the pair of the operating levers are opened and closed according to the distance from the gripping portions, and cooperatively with this closing and opening of the operating levers, the gripping force in the gripping portions is controlled. The operating member is anchored to a tractor through an anchoring device, and the position of the operating member relative to the operating levers is determined according to the balance between the tractive force acting on the operating member and the weight of the body to be conveyed and the gripping force in the gripping portions is controlled. An extension is provided on one operating arm member whereby a hand-applied force moving the extension toward the other arm member will oppose the urging force of the elastic member and allow selective engagement to the movable body.
REFERENCES:
patent: 306067 (1884-10-01), Durning
patent: 413071 (1889-10-01), Lowe
patent: 433756 (1890-08-01), Wilson
patent: 504600 (1893-09-01), Manning et al.
patent: 674944 (1901-05-01), Stinchcomb et al.
patent: 943220 (1909-12-01), Dufour
patent: 1381813 (1921-06-01), Engevik
patent: 2295768 (1942-09-01), Williamson
patent: 2668733 (1954-02-01), Boticki
patent: 4098533 (1978-07-01), Hanlon
patent: 4421353 (1983-12-01), Smith
patent: 4678217 (1987-07-01), Viola et al.
LandOfFree
Apparatus for emergency conveyance of a human being disposed on does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for emergency conveyance of a human being disposed on , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for emergency conveyance of a human being disposed on will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-817039