Core lift

Details Core lift Core lift

1994-11-14

1996-06-18

Kramer, Dean

Handling: hand and hoist-line implements

Grapple

Expanding

414911, B66C 154

Patent

active

055270786

ABSTRACT:
An apparatus for lifting and reorienting an object having an internally accessible axially extending opening, such as a pipe or a roll of plastic. The apparatus has an elongated shaft and a tapered probe attached at the lower portion thereof. A plurality of gripping members or dogs are provided for engaging the inside surface of the internal opening of the object with a force corresponding to the weight of the object so that the apparatus may be employed for lifting and reorienting the object.

REFERENCES:
patent: 621380 (1899-03-01), Shoffner
patent: 1445581 (1923-02-01), Fullop
patent: 1495409 (1924-05-01), Foster
patent: 1540566 (1925-06-01), Petree
patent: 2020561 (1935-11-01), McCullough
patent: 2614881 (1952-10-01), Holland
patent: 3075800 (1963-01-01), Rowekamp
patent: 3163338 (1964-12-01), Hayes
patent: 4340249 (1982-07-01), Bucklew
patent: 4577899 (1986-03-01), Hemingway
patent: 4687244 (1987-08-01), Cullen et al.
patent: 4919881 (1990-04-01), Hankinson et al.
patent: 4997225 (1991-03-01), Denis

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