Vacuum lifting/lowering head

Details Vacuum lifting/lowering head Vacuum lifting/lowering head

1991-12-30

1994-07-19

Werner, Frank E.

Material or article handling

Elevator or hoist and loading or unloading means therefor

Grab

294 641, B66C 102

Patent

active

053303148

ABSTRACT:
A vacuum lifting/lowering head comprises a fixed, steadying upper handle adapted, in use, to be gripped by the user, and a movable, lower handle displaceable under the manual control of the user, both handles being suitable for either left or right hand manual operation. An opening is provided in a part of the head, and a valve member is associated with the opening to control the extent of exposure thereof and displaceable by the user's manual movement of the lower handle. The invention also includes a vacuum lifting apparatus provided with such a head.

REFERENCES:
patent: 22551 (1859-01-01), Duchamn
patent: 3313568 (1967-04-01), Fogg
patent: 3322221 (1967-05-01), Engelen et al.
patent: 3743340 (1973-07-01), Williamann
patent: 3751095 (1973-08-01), Myles
patent: 3999795 (1976-12-01), Barker
patent: 4412775 (1983-11-01), Molitor et al.
patent: 4413853 (1983-11-01), Andersson
patent: 4750768 (1988-06-01), Kumar
patent: 5035456 (1991-01-01), Messinger

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