Material or article handling – Vertically swinging load support – Door remover
Patent
1997-07-01
1999-09-14
Keenan, James W.
Material or article handling
Vertically swinging load support
Door remover
414411, 533814, 422297, 422300, 422302, B66C 2300
Patent
active
059512377
ABSTRACT:
In a device for lifting, pivoting and rotating the cover (5) of a vacuum container (14) of a crystal drawing apparatus, the device being equipped with a bolt (26) held by a stationary part (15) of the apparatus and extending vertically upward, a sleeve (24) being provided with projections (34,34'), which are permanently attached to it and which extend horizontally from it, the device also being provided with a pair of bolts (34,34'), and with a sleeve component (28), which is pivoted on the bolts (36,36'), whereby parallel to the sleeve component (28) a screw bolt (37) is sustained in the housing (35). A hand lever (21) is fixed on the screw bolt (37), which is connected with a screw nut (38), which supports itself on the rotary sleeve (24), where the sleeve component (28) surrounds a journal (27), which is permanently connected to the device part or to the cover (5).
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patent: 4708764 (1987-11-01), Boden et al.
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patent: 4884938 (1989-12-01), Fujita et al.
patent: 4979350 (1990-12-01), Arnemann
patent: 5048259 (1991-09-01), Cox et al.
Hess Douglas
Keenan James W.
Leybold Systems GmbH
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