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| Number | Title | Issue Date |
| 6890612 | Article and method of making A sheet of material which is made two dimensional which includes portions that are removed that allows the sheet to be folded to create a three dimensional structure without the need for cutting and darting. ... | 05/10/2005 |
| 5669204 | Bag folding system A method of automatically folding an air bag having an end coupled to a retainer and an opposed distal end including flattening and narrowing the bag, providing first and second upright blade assemblies each having individually movable blades between a no... | 09/23/1997 |
| 5439436 | Boxed pocket folding machine A folding machine which takes a prescored blank of paper, folds side flaps up, and glue tabs down, applies a glue line to the tabs, and folds end flaps of the blank about score lines onto the glue tabs to form boxed pockets and then delivers the finished ... | 08/08/1995 |
| 5433692 | Gusset forming machine and gusset forming process A gusset forming machine includes a mandrel having a support surface on which a blank for the gusset is manually mounted, and one or more pusher assemblies which are driven into contact with the mandrel to deform the blank, thus forming a gusset. Preferab... | 07/18/1995 |
| 4822327 | Jacket for a flexible magnetic disk and production of the jacket The blanks punched out from a film web and folded to form the jacket are then heated for a short time and cooled again in order to eliminate stresses in the jacket material which give rise to deformations and are also produced by the action of heat during... | 04/18/1989 |
| 4733519 | Method and system for forming floppy disk envelopes A method and system are provided for forming floppy disk envelopes. Envelope blanks are manipulated while attached to a continuous web of envelope material to facilitate handling and alignment of the blanks. Initially, fold lines are impressed into the en... | 03/29/1988 |
| 4627829 | Centerfold forming apparatus for a disk envelope Apparatus for forming a disc envelope from a prepunched, flexible, plastic blank having two sections connected at the heads thereof and containing a drive hole at the same location in each section. The drive holes are located on respective hubs which are ... | 12/09/1986 |
| 4617081 | Side flap fold apparatus for a disk envelope The flexible disk envelope is formed from a flexible plastic prepunched blank having two connected sections. One section of the blank has side flaps extending from the opposite side edges. The blank is folded about an end of a mandrel so that the side fla... | 10/14/1986 |
| 4608039 | Envelope folding system An apparatus for folding envelope blanks comprises a plurality of platform assemblies which are rotatably mounted on a base. The platform assemblies are incrementally advanced around the base, and separate mechanisms located around the periphery of the ba... | 08/26/1986 |
| 4601689 | Method and apparatus for folding polymeric sheet material and flexible disk jackets made thereby An improved method of warm folding polymeric sheet material and apparatus for accomplishing the method. The method involves applying conductive heat to both sides of the material prior to folding and is accomplished in steps including: (a) positioning the... | 07/22/1986 |
| 4447218 | Method and apparatus for the automatic folding of floppy disc storage envelopes Presented is a method and apparatus for the substantial automatic folding of flat pre-cut blanks of sheet material to form storage envelopes for floppy or rigid disc storage devices. The machine includes a pedestal formed in part by an electromagnet assoc... | 05/08/1984 |
| 4443398 | Forming process for light gauge polymer sheet material A method for cold-forming light gauge polymer sheet material by application of localized heat to the area of the fold. In the manufacture of Lexan polycarbonate flexible magnetic disk jackets, heat is applied to the folded edge by a heating element genera... | 04/17/1984 |
| 4367117 | Machine for sealing disc covers Covers for floppy discs and like media are first formed with three sides sealed and thereafter the disc is inserted. A fourth flap must then be folded and glued for permanent sealing of the disc. The subject machine receives the unsealed cover with the di... | 01/04/1983 |
| 4347091 | Apparatus for the production of jackets for recording disks An apparatus for the production of a jacket for a recording disk from a foldable blank, comprising a stationary receiving surface for one half of the blank and a further surface, pivotable essentially through an angle of 180°, for bending over the other ... | 08/31/1982 |
