Patents by Inventor Kurt Liedtke

Kurt Liedtke has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4715497
    Abstract: Shoulder boxes (11) consist of box part (12) for receiving a group of cigarettes (10) and an articulated hinged lid (14). To achieve better aroma and moisture retention, the group of cigarettes (10) is wrapped in an inner wrapping (15) which, for the extraction of cigarettes, has in the region of a continuously closed upper wall (18) a tear-open thread (35) or a tear-open strip (36). In this way, easy access to the cigarettes (10) is possible.
    Type: Grant
    Filed: July 31, 1984
    Date of Patent: December 29, 1987
    Assignee: Focke & Co.
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4694714
    Abstract: To change reels (11, 12) of packaging material in or on packaging machines, a front region of a connecting sheet (13) is held ready in an exact relative position in a common conveyor track (18). When the end of a run-off sheet (10) is reached, an end piece of the latter is severed, so that the run-off end and the front end of the sheets of material (10, 13) can be conveyed (further) in an exact position to one another.
    Type: Grant
    Filed: August 27, 1985
    Date of Patent: September 22, 1987
    Assignee: Focke & Co. (GmbH & Co.)
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4627450
    Abstract: In the case of high-performance cigarette packaging machines, to achieve high outputs and, at the same time, a careful treatment of the cigarettes it is important to maintain continuous movements as uninterrupted as possible. For this purpose, cigarettes (10) are extracted from a magazine (15) and are then conveyed in a single-layer sequence. Cigarette groups (11) are then formed from these likewise in a continuous operation, with an arrangement and number of cigarettes 10 corresponding to a cigarette pack.
    Type: Grant
    Filed: March 13, 1985
    Date of Patent: December 9, 1986
    Assignee: Focke & Co.
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4617780
    Abstract: For raising the rate of production of packaging machines, especially for the manufacture of cigarette packets (10, 11), the rate of production of an apparatus for wrapping the packets in an outer blank (film blank 19, 20) is to be raised. For this purpose a plurality, especially two adjacent packets (10, 11) are conveyed simultaneously, and are wrapped in a common overall blank (18) of corresponding width. After formation of a stable tubular blank, which wraps both the packets (10, 11), there follows the cutting through of the overall blank (18), with formation of the individual film blanks (19, 20) which thereafter are fully folded.
    Type: Grant
    Filed: August 29, 1984
    Date of Patent: October 21, 1986
    Assignee: Focke & Co. (GmbH & Co.)
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4614075
    Abstract: High-performance packaging machines, especially for cigarettes, require a large quantity of packaging material for producing blanks. The sheet-like packaging material is provided in reels (24). To provide a sufficient supply of reels (24) for the packaging machine (20), there is a reel magazine (26) which has a reel turret (27) with a plurality of reel holders (32, 33, 34). Each reel holder (32, 33, 34) itself receives a plurality of reels (24) arranged equiaxially next to one another. These are fed in succession to a consumption station (25) or reel-receiving devices (28, 29).
    Type: Grant
    Filed: November 15, 1984
    Date of Patent: September 30, 1986
    Assignee: Focke & Co., (GmbH & Co.)
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4603800
    Abstract: To guarantee a permanent continuous delivery of sheets of material (12), packaging material, on packaging machines, sheet stocks (14) are formed, and these guarantee that the sheet of material 12 can be stopped temporarily in a region preceding them, without conveyance being interrupted in the region where it is conveyed further. During this time, the sheet of material (12) is drawn off from the sheet stock (14). A supply rocker (10) to form the sheet stock (14) is designed such that, in an initial position, the sheet of material (12) is free of deflections or loops.
    Type: Grant
    Filed: March 14, 1985
    Date of Patent: August 5, 1986
    Assignee: Focke & Co., (GmbH & Co.)
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4592374
    Abstract: In the case of high-performance cigarette packaging machines, to achieve high outputs and, at the same time, a careful treatment of the cigarettes it is important to maintain continuous movements as uninterrupted as possible. For this purpose, cigarettes (10) are extracted from a magazine (15) and are then conveyed in a single-layer sequence. Cigarette groups (11) are then formed from these likewise in a continuous operation, with an arrangement and number of cigarettes (10) corresponding to a cigarette pack.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: June 3, 1986
    Assignee: Focke & Co.
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4559757
    Abstract: An apparatus for packaging cigarettes includes a magazine 35 for supplying cigarette groups 23 to pockets 71 of a first revolver 66, whereafter they are transferred into foil lined pockets 74 of a second revolver 67 and then into paper lined pockets 91 of a third revolver 68. The revolvers are continuously driven, and the groups are always oriented with their wide front or rear faces outermost in the pockets to implement smooth tangential transfer between the revolvers. A curved stripper and guide bar 94 enters through the sides of the first revolver pockets to transfer the groups to the second revolver. Transfer between the second and third revolvers is made by simultaneously decreasing the radial depth of the second revolver pockets and increasing the radial depth of the third revolver pockets at a transfer station 89.
    Type: Grant
    Filed: September 7, 1983
    Date of Patent: December 24, 1985
    Assignee: Focke & Co.
    Inventors: Heinz H. Focke, Kurt Liedtke
  • Patent number: 4524658
    Abstract: For transporting and guiding delicate packaging material in conjunction with a packaging machine for producing individual blanks, a conveyor band 15 is subdivided by deflection into two portions 24, 25 is used. In the region between these conveying portions the sheet 12 or blank 10 is transported on a roller 26 acting as an intermediate conveyor. The severing cut is made here, without the continuous guidance of the sheet and blank being interrupted.
    Type: Grant
    Filed: October 13, 1983
    Date of Patent: June 25, 1985
    Assignee: Focke & Co.
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4508218
    Abstract: In the production of soft packs for receiving cigarettes or the like it is important, where possible, to save material, while maintaining the functional characteristics of the pack, on the one hand, and its external appearance. For this reason, the proposed (soft) pack consists of a single one-piece blank made especially of paper or the like. By special folding in the region where the pack envelope merges into the end wall, an offset or a step with an upper edge rim is formed here, and this gives the external impression of a conventional cup pack and moreover imparts increased dimensional stability to the pack.
    Type: Grant
    Filed: July 15, 1983
    Date of Patent: April 2, 1985
    Assignee: Focke & Co.
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4507903
    Abstract: There is provided a method of and apparatus for packing rod-shaped articles, especially cigarettes. A rotatable turret is used, into which blanks are introduced into pockets of the turret, with partial folding of the blanks, whereafter groups of articles are axially introduced into the blanks in pockets, the article groups being introduced alternately from opposite sides of the turret. There is also provided an apparatus whereby article groups can be ejected alternately on both sides of a magazine and also an apparatus wherein, to form article groups from three article rows or layers, the middle row containing fewer cigarettes than the top and bottom rows, a lateral chute wall of the magazine terminates above the region of the cigarette groups to be ejected, merely articles of the top and bottom rows being ejectable in this region via a recess in the entraining member associated with the lateral chute, such recess being at the height of the middle cigarette row.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: April 2, 1985
    Assignee: Focke & Pfuhl
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4495746
    Abstract: The efficient machine conveyance of inexpensive, very thin-walled packaging material, especially plastic foils, presents special problems because of the low degree of firmness of these foils. In the present apparatus, the front end of a sheet of such material and blanks severed from it are transported continuously by suction air conveying members. These consist of a suction drum and perforated belts directly adjoining the drum, with no interruption occurring in the retention of the packaging material.
    Type: Grant
    Filed: July 14, 1982
    Date of Patent: January 29, 1985
    Assignee: Focke & Co.
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4466577
    Abstract: A process and an apparatus for continuously supplying sheets from a plurality of supply rolls to a packaging machine utilizes a transfer device for transferring an end of a fuel reel into a path of movement of an end of an emptying reel so that these ends are displaced from one another by a small distance which is between 5 and 15 mm. The transfer device includes first and second suction conveyors which have a small section which overlaps so that the end of the full reel can be transferred into the path of movement of the end of the emptying reel.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: August 21, 1984
    Assignee: Focke & Co.
    Inventors: Focke Heinz, Kurt Liedtke
  • Patent number: 4428177
    Abstract: An apparatus for packaging cigarettes includes a magazine 35 for supplying cigarette groups 23 to pockets 37 of a first revolver 32, whereafter they are transferred into foil lined pockets 38 of a second revolver 33 and then into paper lined pockets 39 of a third revolver 34. The groups are always oriented with their wide front or rear faces outermost in the pockets to minimize the radial transfer distance, and movable support plates 93 are provided at the first transfer station 45 to engage the free outer row of loose cigarettes to retain them intact during transfer.
    Type: Grant
    Filed: November 25, 1980
    Date of Patent: January 31, 1984
    Assignee: Focke & Co.
    Inventors: Heinz H. Focke, Kurt Liedtke
  • Patent number: 4375260
    Abstract: An inner laminated foil wrapper 38 of a flip-top cigarette pack has fully sealed flap folds and seams to retain the moisture and aroma of the cigarettes. An opening flap 49 defined by a tear line 52 on the adjoining top and upper front surfaces of the wrapper has a finger tab 47 on its lower edge, lying adjacent the cut-out front wall 35 of an upstanding collar 32 proximate an edge thereof, to facilitate opening the pack when the lid 21 is hinged back. The finger tab is formed by an adhesively sealed overlap of the wrapper foil.
    Type: Grant
    Filed: September 25, 1981
    Date of Patent: March 1, 1983
    Assignee: Focke & Co.
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4351142
    Abstract: A wrapping machine for U-folding a sheet of wrapping film or material around a group of cigarettes which are being conveyed along a longitudinal path to a wrapping station. The sheet of wrapping material is fed transversely into the path at the wrapping station and held there by a pair of suction rollers. Reciprocating longitudinally along the path is a receiver into which the group of cigarettes is conveyed. Before the group of cigarettes reaches the wrapping station, the forward end of the receiver engages the sheet of wrapping material and strips it from the suction rollers to form a U-shaped fold about the group of cigarettes as the group moves forwardly out of the receiver into the wrapping station. Thus, the group of cigarettes itself is not subjected to the stress required in removing the wrapping material from the suction rollers.
    Type: Grant
    Filed: February 15, 1980
    Date of Patent: September 28, 1982
    Assignee: Focke and Company
    Inventors: Heinz H. Focke, Kurt Liedtke, Hans J. Bretthauer
  • Patent number: 4303155
    Abstract: An inner laminated foil wrapper 38 of a flip-top cigarette pack has fully sealed flap folds and seams to retain the moisture and aroma of the cigarettes. An opening flap 49 defined by a tear line 52 on the adjoining top and upper front surfaces of the wrapper has a finger tab 47 on its lower edge, overlying the cut-out front wall 35 of an upstanding collar 32, to facilitate opening the pack when the lid 21 is hinged back. The finger tab is formed by an adhesively sealed overlap of the wrapper foil.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: December 1, 1981
    Assignee: Focke & Co.
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4300676
    Abstract: A cuboid pack for cigarettes, small cigars and the like, comprises a wrap consisting of a thin packaging material, and an outer wrap. The outer wrap comprises a hinge lid box including a collar having a cut-out formed therein. A freely projecting tear-open tab is formed by a material overlap which extends transversely across a front wall side of the thin wrap within the region of the cut-out. A free edge portion of said tear-open tab rests upon an external portion of the collar and the tear-open tab adjoining a pull-off strip extending upwardly from the cut-out.
    Type: Grant
    Filed: December 11, 1979
    Date of Patent: November 17, 1981
    Assignee: Focke & Co.
    Inventors: Heinz H. Focke, Kurt Liedtke
  • Patent number: 4294642
    Abstract: A package and a process for making the same is disclosed. The package is especially useful for cigarettes and is of the hard cup type being made with a packing body of cardboard, pasteboard or similar material. The body of the package is provided on the outside with a moisture and odor (aroma) tight coating and, at least at the upper edge, a strip of inside tin foil wrapping is attached for the formation of a front fold. The arrangement simplifies the package blank and results in a finished package having an overall metal coating.
    Type: Grant
    Filed: December 5, 1979
    Date of Patent: October 13, 1981
    Assignee: Focke & Pfuhl
    Inventors: Heinz Focke, Kurt Liedtke
  • Patent number: 4294353
    Abstract: A cigarette pack consisting of two dimensionally identical half-packs 2, 4 which can be folded one onto the other and which are connected along a V-shaped fold 14 by a separating line 22. Each half-pack has a lid 18, 18' which in the closed position is held behind the front wall 10, 10' of said half-pack. The pack is made from a one piece blank which can be laid out on a sheet or web of packaging material and stamped therefrom without waste.
    Type: Grant
    Filed: January 16, 1980
    Date of Patent: October 13, 1981
    Assignee: Focke & Co.
    Inventors: Heinz H. Focke, Kurt Liedtke