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...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.

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Class 493/254 - Central fold


Subclass of Class 493 - Manufacturing container or tube from paper; or other manufacturing from a sheet or web
Definition: Method or apparatus including forming a crease line parallel
No. of patents: 56
Last issue date: 08/16/2011


1    
NumberTitleIssue Date
7998048Coupon bag with detachable portion and methods of making same
A plastic bag with a removable coupon section and a method for forming plastic bags with removable coupon sections is presented. The bag comprises a bag portion and a coupon portion. The coupon portion comprises two flaps. Each flap representing at least one coupon....
08/16/2011
7431683Sheet bending apparatus and sheet postprocessing apparatus
A sheet bending apparatus and a sheet postprocessing apparatus are provided for improving an alignment of recording sheets at the time of center-folding processing. A controller of the center-folding unit mounted in the sheet postprocessing apparatus performs: a fir...
10/07/2008
7387601Devices and methods for drawing at least one web of material or at least one web strand into a folding apparatus
A device is provided which is usable to draw at least one web of material or at least one web strand, that includes several webs of material, into a folding apparatus. The folding apparatus includes at least an upper structure, at least one folding funnel and a cros...
06/17/2008
7318798Apparatus and method for folding and tucking crotch region of disposable diaper
An apparatus includes a first rotary disc, a plurality of folding plates mounted on a peripheral zone of the first rotary disc, a plurality of positive motion cams mounted on the peripheral zone of the first rotary disc so as to be interposed between the first rotar...
01/15/2008
7314440Former for a strip-producing or strip-processing machine
A former is provided for a web-producing or a web-processing machine. The former is structured with a porous material through which a fluid can pass. The porous material is positioned or located on at least one region of the former that is cooperating with a strip o...
01/01/2008
7195586Apparatus and method for folding and tucking disposable diapers in their crotch regions
An apparatus includes a first rotary disc, a plurality of folding plates arranged at regular intervals along a peripheral zone of the first rotary disc, a plurality of positive motion cams arranged at regular intervals along the peripheral zone of the first rotary d...
03/27/2007
7144357Method and apparatus for folding continuously fed web in two
Here is disclosed a method and apparatus for folding a continuously fed in two. The web is folded along guide means defining a folding guide line with a fold angle gradually reduced. In the course of gradually reducing the fold angle, a plurality of guide rolls thro...
12/05/2006
6939284Sheet folding apparatus with rounded fold blade
An apparatus for folding sheet material, including a fold blade having a rounded folding surface, a fold roller, and drive means for moving at least one of the fold blade and the fold roller into operable communication such that the fold roller passes around or alon...
09/06/2005
6926654Method and apparatus for folding continuously fed web in two
Here is disclosed a method and apparatus for folding a continuously fed in two. The web is folded along guide means defining a folding guide line with a fold angle gradually reduced. In the course of gradually reducing the fold angle, a plurality of guide rolls thro...
08/09/2005
6837840Sheet processing apparatus and image forming apparatus equipped with the same
A sheet processing apparatus for folding a sheet bundle at a predetermined position includes paired rotating bodies for folding the sheet bundle having nip portions, a pressing device for pressing the predetermined position of the sheet bundle into the nip portions ...
01/04/2005
6685613Method of making a prefastened undergarment in a cross machine direction and apparatus for carrying out said method
A method of making a prefastened refastenable diaper or other undergarment includes the steps of forming a web of diaper material, cutting holes in the center of the web as precursor leg cutouts and, placing a fastening system divided between front and ba...
02/03/2004
6419616Label looper
There is disclosed a method and apparatus for making a looped label and accumulating labels in a stack. An intermediate portion of the label is inserted into the nip of a pair of rotating rolls which fold or loop the label into two side-by-side or face-to...
07/16/2002
6371646Bulk bag with multiple ply walls and a method of forming it from tubular blanks
A bulk bag or a liner for a bulk container is formed from a plurality of tubular blanks of flexible material so that each wall of the bag or liner has at least two layers of material. Desirably, many woven or plastic sheet materials suitable to make such ...
04/16/2002
6273470Slip resistant file folders
Easily and securely gripped slip-resistant file folders including file pockets and hanging folders. The folders comprise a front flap having a top edge, a rear flap connected to the front flap by a folder bottom, the rear flap also having a top edge. A sl...
08/14/2001
6074332Knife folder
A knife folder for folding a sheet material comprises a sheet-material feeder for feeding the sheet material in a first direction, a folder for folding said sheet material, and a sheet-material conveyer used for conveying the sheet material and comprising...
06/13/2000
6059912Method of making and using a semi rigid container
A semi rigid container comprising a plurality of generally rectangular side walls and a bottom wall attached to the bottom of each side wall. A plurality of flexible supporting frames are attached to each side wall to expand the container's open top and t...
05/09/2000
5980442Apparatus and method of producing a food server with pre-fold of glue panels
A novel food server and method of producing a food server is disclosed. The novel method includes moving a web of paper at a constant rate of speed, rotary perforating a plurality of lines on the moving web, using rotary timing belts to score at least two...
11/09/1999
5852917Method of manufacturing double-chambered infusion bags by folding
A tubular blank of filter paper containing measured and separate quantities of tea, or a similar infusionable substance, is pleated and folded so as to obtain a bag with two envelopes by a method that includes the steps of advancing blanks singly and in s...
12/29/1998
5749822Gusset folding mechanism and method for plastic bag making machine
In a bag making machine the longitudinal side edges and adjacent portions of an elongate plastic web, which is folded in half medially of its centerline, pass from a set of inlet rolls over and under, respectively, a pair of vertically spaced separating r...
05/12/1998
5741208Environmental container liner and method of manufacture
A waste container liner and method of manufacture thereof are provided. The method involves the steps of flattening a continuous tubular web of pliable material to form two adjoining layers of material and then slitting one of the longitudinal edges of th...
04/21/1998
5711750Reinforced expandable folders
An expandable folder is provided which includes a front panel member, a rear panel member, and an expandable gusset which connects the panel members and forms the bottom and sides of the folder. Reinforcing means are provided upon critical or highly stres...
01/27/1998
5690774Apparatus and method for maintaining the confidentiality of printed information
An apparatus and method for maintaining the confidentiality of information contained in a printed document is accomplished by enclosing the document in an envelope, or similar enclosure, before the document is discharged from the apparatus. The apparatus ...
11/25/1997
5514067Easy open feature for polymeric package with contents under high compression
An improved top opening, rectangular flexible bag for containing a stack of highly compressed flexible articles. The bag has front and back panels, two side panels and top and bottom panels, all of which are connected together to form an internal compartm...
05/07/1996
5492585Method for fabricating five-piece expanding pocket
A five-piece expanding pocket having front inner and outer panels secured to each other by cohesive glue, rear inner and outer panels secured thereof by cohesive glue, and a gusset having outer edge portions with cohesive glue and opposite sides thereof b...
02/20/1996
5378220Method of constructing reusable yard waste container
A reusable yard waste container has a four sided rectangular shell which is open at its top end and has a flat multi-layered bottom. Two opposed sides of the shell have medial fold lines which allow the container to be collapsed to a flat orientation wher...
01/03/1995
5322450Method of manufacturing packaging bags with a handle
A method of manufacturing bags that are rectangular when collapsed and which comprise two superimposed flat sides, sealed at the edges, and a handle member. The method comprises the steps of: laying out a web forming three parallel subordinate webs, one e...
06/21/1994
5116302Process and apparatus for the sealing of paper sheets
In the sealing of paper sheets, particularly envelopes, such as for example self-enveloping forms, by knurling of the edges to be joined together, the preliminary moistening of the same edges is provided, which leads to a seal tight closure or sealing....
05/26/1992
5047000Attachment for forming envelopes
A readily removable apparatus for use with an envelope blank-forming machine for the forming of envelopes from those blanks. The apparatus comprises an adhesive sprayer for applying adhesive on one side of a side flap of the envelope blank. It also includ...
09/10/1991
5030190Gussetted plastic bags having relief seals and method of making same
A disposable or reusable and reclosable gussetted plastic bag capable of being compactly stored as a food container in freezers, yet capable of standing with an upright spout in a microwave oven for non-spill thawing and cooking of food contained in the b...
07/09/1991
4959045Filter socks
A construction of filter sock which has a panel (1) with two leaves (2,3) of unequal width such that when folded along a foldline (4) the leaves form a double leaf panel with a projecting side (9). The side (9) is folded back along a second fold line (11)...
09/25/1990
4887973Conforming device for a flexible film provided with projecting mouthpieces
A shaping device for a web of flexible film having projecting ports comprising a shaping plate having a slit, for receiving the film, and an opening for receiving the port. An adjustable member is provided for limiting the length of the slit. A member is ...
12/19/1989
4849040Method and apparatus for high speed pouch and bag making
A method and apparatus for high speed pouch or bag making from thin, extensible heat-sensitive thermoplastic film webs or multiple webs of paper, film and foil in which the seal pattern may be simple or complex sealing and in which the method is applied t...
07/18/1989
4840610Thermoplastic bag, bag pack and method of making the same
A method for forming a thermoplastic film handled bag comprising: forming a continuous collapsed thermoplastic tube having heat seal lines across the width of said tube at bag length intervals, longitudinally folding opposite sides of the heat sealed tube...
06/20/1989
4789247Blanket convertible to a tote bag
A convertible beach blanket may be easily converted into a tote bag having a number of internal compartments by folding in a first then a second direction and pulling on a cord confined to a portion of the blanket by a series of eyelets formed in a circul...
12/06/1988
4764028Hang bags having hanger portion of reinforcing member of non-shrink film laminated between two layers of shrink film
A hang bag comprises a body portion 1 and a hanger portion 2. The body portion 1 is formed of face and rear panels 3 and 4 of shrinkable film sealingly joined together at the end 6, for instance by folding. It may be a double-side weld bag. The hanger por...
08/16/1988
4759742Process of making T-shirt bags
In a process of making T-shirt bags a flat tubular film that is provided on each side with at least one gusset is provided with top end seam welds, which close the gusset portions to form handle loops, and with cutouts, which are similar to the neckline o...
07/26/1988
4664417Foreign currency dispenser envelope
A currency dispenser packet for facilitating the sale of prepackaged foreign currency at a retail outlet includes an envelope containing a preselected quantity of a currency of a foreign country. The envelope is imprinted with a machine-readable code iden...
05/12/1987
4650530Apparatus and method for folding, bonding and severing a web
Apparatus for folding, bonding and severing a longitudinally extending web, comprising a rotatable disc having a plurality of circumferentially spaced-apart, radially extending protrusions at its periphery, means for rotating the disc, means for feeding t...
03/17/1987
4642084Plastic bag making machine
A machine for making plastic bags, such as trash or garbage bags, includes a rotary sealing drum of variable diameter, the drum including one or more sealing bars for cross-sealing a flattened plastic film tube passing through the machine. A blanket tensi...
02/10/1987
4623325Folding insert for forming a jacket
A folding insert for forming a jacket to be used for a device to form a envelope-shape jacket for a magnetic cartridge. The folding insert is provided with protrusions and grooves along both side edges thereof, whereby flaps of the jacket material can be ...
11/18/1986
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