Conveyors: power-driven – Conveyor system for moving a specific load as a separate unit – System includes an oscillating or reciprocating load...
Reexamination Certificate
1998-08-05
2001-04-24
Olszewski, Robert P. (Department: 3652)
Conveyors: power-driven
Conveyor system for moving a specific load as a separate unit
System includes an oscillating or reciprocating load...
C198S468800, C198S430000
Reexamination Certificate
active
06220424
ABSTRACT:
CROSS REFERENCE TO RELATED APPLICATION
This application claims the priority of Swiss Application No. 1861/97 filed Aug. 5, 1997, which is incorporated herein by reference.
BACKGROUND OF THE INVENTION
This invention relates to a method and an apparatus for transferring items, particularly flat confectionary products, from a conveyor advanced in a single column thereon. In particular, the apparatus is intended for engaging and transferring items arranged consecutively in the conveying direction, for example, for jointly introducing them into a packaging container.
Published European Application 526 403 discloses an apparatus having suction grippers arranged serially in the conveying direction to grasp, individually or in groups, confectionary items delivered on a conveyor belt in order to deposit them into packing shells.
SUMMARY OF THE INVENTION
It is an object of the invention to provide an improved transporting (conveying and transferring) apparatus and method of the above-outlined type which is capable of an increased output as compared to conventional arrangements.
This object and others to become apparent as the specification progresses, are accomplished by the invention, according to which, briefly stated, the transporting apparatus includes a conveyor for advancing items and a transfer apparatus for lifting the items off the conveyor and for depositing the items at a location externally of said conveyor. The transfer apparatus has hoisting devices spaced from one another in the conveying direction. Each hoisting device has first and second lifters spaced from one another in a direction transverse to the conveying direction and being situated bilaterally of the conveyor. A first drive moves the first and second lifters into raised and lowered positions; and a second drive moves the first and second lifters toward and away from one another to cause them to assume a normal position and a spread-out position. First and second tray parts of a tray forming part of each hoisting device are mounted on the first and second lifter, respectively. In the raised and lowered positions the trays are clear of a travel path of the items on the conveyor. Each tray, when being raised from the lowered position into the raised position, is adapted to lift an article off the conveyor. The first and second tray parts of each tray are moved away from one another by the first and second lifters upon displacement thereof into the spread-out position as the trays are moved toward the lowered position. Further, an arrangement is provided for removing the items from the trays in a raised position thereof.
REFERENCES:
patent: 3186564 (1965-06-01), Hyer
patent: 4498573 (1985-02-01), Anderson et al.
patent: 4573862 (1986-03-01), Anderson
patent: 5186599 (1993-02-01), Fluck
patent: 5190138 (1993-03-01), Strasser et al.
patent: 5680936 (1997-10-01), Beers
patent: 591385 (1934-01-01), None
patent: 0 526 403 (1995-08-01), None
patent: 2446785 (1980-09-01), None
patent: 0053919 (1989-03-01), None
patent: 0110423 (1989-04-01), None
Keleman Gabor J.
McAllister Steven B.
Olszewski Robert P.
SIG Pack Systems AG
Venable
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