Container for fan-folded sheets

• US 5,056,682 A
• Filed: 12/12/1989
• Issued: 10/15/1991
• Est. Priority Date: 12/12/1989
• Status: Expired due to Term

• Current Assignee: Welch Allyn Incorporated
• Original Assignee: Diatek, Inc. (Diatek Corp.)
• Inventors: Manno, Joseph J., Meyst, Richard P., Gregory, Thomas K., Suszynski, Edward D., Ayton, Ian F., Carlock, Jimmy J.
• Primary Examiner(s): Bollinger, David H.
• Application Number:
  US07/449,549
• Time in Patent Office: 672 Days
• Field of Search: 221/25, 221/26, 221/70, 221/185, 221/312 R-312 C, 225/15, 225/16, 225/32, 225/53, 225/54, 206/38, 206/39.5, 206/39.6, 206/39.8, 206/408, 206/409, 206/390
• US Class Current: 221/25
• CPC Class Codes: B65D 83/0847 through an aperture at the junction of two walls
• CPC Class Codes: B65H 2701/11231 Fan-folded material or zig-zag or leporello
• CPC Class Codes: B65H 35/10 from or with devices for breaking partially-cut or perforated webs, e.g. bursters
• CPC Class Codes: Y10T 225/21 Merely to provide lead-end for manual grasping
• CPC Class Codes: Y10T 225/23 Zigzag-folded supply package
• CPC Class Codes: Y10T 225/254 With finger-access opening to facilitate work feed-out
• CPC Class Codes: Y10T 225/255 With internal guide

Abstract

A container for carrying a uniform, fan-folded stack of plastic sheet assemblies and for allowing the assemblies to be conveniently dispensed, one at a time, with minimal risk that the stack will become jammed. The stack of assemblies is retained behind a constriction within an elongated chamber having a corresponding shape and slightly larger size. Pulling the forward-most assembly through a narrow channel and exit slot at the forward end of the container flexes a trailing assembly past the constriction, while the remaining assemblies remain retained behind the constriction. In addition, a shallow recess in a wall defining the narrow channel conformingly receives a plastic sheet assembly in position to be dispensed, with the recess'"'"' rear periphery inhibiting the assembly from being moved unintentionally back into the chamber.

Claims

1. A container for carrying a plurality of substantially flat, flexible sheets and for allowing the sheets to be dispensed, one at a time, wherein the sheets are of substantially the same shape and size and are connected together in a chain and arranged in a uniform, fan-folded stack, the container comprising:

means defining an elongated storage chamber with a longitudinal axis and a transverse cross-sectional shape that corresponds generally with the shape of the individual sheets and with a size that permits the stack of fan-folded sheets to slide along the chamber'"'"'s longitudinal axis;

means located at a forward end of the elongated chamber for defining a slot sized to allow the connected sheets to be dispensed therethrough, one at a time; and

retainer means located in the elongated chamber, rearwardly of the slot, for defining a constriction having a cross-sectional size slightly smaller than the sheets in a plane perpendicular to the chamber'"'"'s longitudinal axis, so as to retain the stack of fan-folded sheets behind it, wherein the sheets can be individually dispensed by pulling the end sheet through the slot, which flexes a trailing sheet past the constriction, with the remaining sheets being retained behind the constriction.

2. A container as defined in claim 1, wherein the elongated storage chamber is defined by four walls and the chamber has a substantially rectangular transverse cross-section, with rounded corners.

3. A container as defined in claim 2, at least one of the four walls defining the elongated storage chamber curves smoothly from the constriction to the slot.

4. A container as defined in claim 2, wherein the constriction is defined by ridges projecting inwardly from two opposed walls, the ridges lying in a common plane, substantially perpendicular to the elongated storage chamber'"'"'s longitudinal axis.

5. A container as defined in claim 1, wherein:

the means defining the elongated storage chamber includes two sections, each section including means defining an elongated trough encircled by a rim, with a flange projecting outwardly from the rim; and

the two sections are attached to each other with their flanges in abutment.

6. A container as defined in claim 5, wherein:

the container is formed from a single sheet of plastic material formed into the specified shape; and

the two sections of the means defining an elongated storage chamber are initially pivotally connected to each other at the end opposite the slot.

7. A container as defined in claim 1, wherein the means defining the slot includes:

a channel defined by two spaced-apart, confronting walls, one of the two walls including a shallow recess having a rear periphery with a size and shape conforming with the rear periphery of the individual sheets being guided through the channel; and

means for urging a sheet located in the channel into the shallow recess, such that the sheet'"'"'s rear periphery abuts against the shallow recess'"'"' rear periphery and is inhibited from moving rearwardly toward the chamber.

8. A container as defined in claim 7, wherein the means for urging includes two hemispherical projections projecting into the channel, the projections lying on opposite sides of the elongated storage chamber'"'"'s longitudinal axis.

9. A container for carrying a plurality of plastic sheet assemblies and for allowing the assemblies to be dispensed, one at a time, wherein the assemblies are all of substantially the same shape and size and are connected together in a chain and arranged in a uniform, fan-folded stack, the container comprising:

means defining an elongated chamber having a longitudinal axis and including a rearward, stack-retaining section and a forward, dispensing section;

wherein the rearward, stack-retaining section of the chamber has a uniform transverse cross-sectional shape substantially the same as, but sized slightly larger than, the individual plastic sheet assemblies, such that the uniform, fan-folded stack of assemblies can slide axially within it;

wherein the forward, dispensing section of the chamber communicates with the storage chamber of the rearward section and has a uniformly-decreasing transverse cross-sectional size and terminates at an elongated slot through which the plastic sheet assemblies are individually dispensed;

wherein the means defining the elongated chamber further includes inwardly-projecting ridge means located between the stack-retaining section and the dispensing section, the ridge means defining a constriction sized slightly smaller than the individual plastic sheet assemblies in a plane perpendicular to the chamber'"'"'s longitudinal axis, so as to retain the stack of fan-folded assemblies behind the ridge means, in the stack-retaining section;

and wherein the assemblies are dispensed individually through the elongated slot by pulling the end-most assembly through the slot, which in turn flexes a trailing assembly in the fan-folded stack past the ridge means constriction, after which that trailing assembly pivots about its trailing edge until the trailing edge itself is pulled past the ridge means constriction.

10. A container as defined in claim 9, wherein:

the rearward, stack-retaining section of the elongated chamber is defined by four walls; and

the inwardly-projecting ridge means of the means defining the elongated chamber includes two segments lying in a common plane, substantially perpendicular to the chamber'"'"'s longitudinal axis, and projecting inwardly from opposing walls of the rearward, stack-retaining section.

11. A container as defined in claim 9, wherein:

the means defining the elongated chamber is formed from a single sheet of plastic material formed into two halves that are pivotally attached to each other, each half being in the form of an elongated trough encircled by a rim, with a flange projecting outwardly from the rim; and

the two halves of the means defining the elongated chamber are assembled by pivoting relative to each other to bring their respective flanges into abutment with each other.

12. A container as defined in claim 9, wherein the forward, dispensing section of the chamber is defined by:

two spaced-apart, confronting walls defining a channel, one of the two walls including a shallow recess with a rear periphery having a size and shape conforming with the rear periphery of the individual sheet assemblies being guided through the channel and slot; and

two projections projecting into the channel and lying on opposite sides of the elongated chamber'"'"'s longitudinal axis.

13. A container for carrying a plurality of flat, flexible sheets and for allowing the sheets to be dispensed, one at a time, wherein the sheets are substantially identical and are connected together end-to-end to form an elongated chain, the container comprising:

means defining a chamber for carrying a plurality of substantially identical, flat, flexible sheets connected end-to-end to form an elongated chain, each of the sheets having a predetermined peripheral shape; and

means defining a narrow channel for guiding the chain of sheets from the chamber;

wherein the chamber and the narrow channel are configured such that pulling the end-most sheet forwardly through the channel pulls with it a trailing sheet from the chamber into the channel;

wherein the means defining a narrow channel includes two spaced-apart, confronting walls, one of the walls including a shallow recess having a rear periphery with a size and shape conforming with the rear periphery of the individual sheets being guided through the channel;

and wherein the means defining the narrow channel further includes means for urging a sheet located in the channel into the shallow recess, such that the sheet'"'"'s rear periphery abuts against the recess'"'"' rear periphery and is inhibited from moving rearwardly into the chamber.

14. A container as defined in claim 13, wherein:

the flat sheets each include multiple layers, one of which is of limited flexibility, each sheet having a generally square periphery with rounded corners; and

the shallow recess formed in one wall of the means defining the narrow channel has a corresponding square periphery with rounded corners.

15. A container as defined in claim 13, wherein the shallow recess formed in one wall of the means defining the narrow channel has a progressively shallower depth with increasing distance from its rear periphery end.

16. A container as defined in claim 13, wherein the means for urging includes two projections projecting into the channel.

17. A container as defined in claim 13, wherein:

the individual sheets in the elongated chain are folded back on each other in an alternating fashion to form a fan-folded stack; and

the chamber is sized and shaped to loosely carry the fan-folded stack of sheets, such that the stack is slidable axially within it and unfolds as it enters the narrow channel.

18. A container as defined in claim 13, wherein the wall opposite the wall having the shallow recess is cutout.

19. A container as defined in claim 13, wherein the means defining the chamber and the two walls defining the narrow channel are together formed from a single sheet of plastic material.

20. A container for carrying a plurality of substantially flat, flexible sheets and for allowing the sheets to be dispensed, one at a time, the sheets are all of the same size and substantially square shape, with rounded corners, and are connected together in a chain and arranged in a uniform, fan-folded stack, the container comprising:

four walls that define and elongated storage chamber with a longitudinal axis and a generally square transverse cross-section, with rounded corners, corresponding generally with the shape of the individual sheets and with a size that permits the stack of fan-folded sheets to slide along the chamber'"'"'s longitudinal axis; and

means located at a forward end of the elongated chamber for defining a narrow channel and an exit slot sized to allow the connected sheets to be dispensed therethrough, one at a time;

wherein two opposed walls of the four walls include ridges projecting inwardly in a common plane, substantially perpendicular to the elongated storage chamber'"'"'s longitudinal axis, for defining a constriction having a cross-sectional shape corresponding generally with the shape of the individual sheets and a size slightly smaller than the sheets, so as to retain the stack of fan-folded sheets behind it, wherein the sheets can be individually dispensed by pulling the end sheet through the channel and exit slot, which flexes a trailing sheet past the constriction, with the remaining sheets being retained by the constriction;

wherein the means defining the narrow channel includes two spaced-apart confronting walls, one of the walls including a shallow recess with a rear periphery having a size and shape conforming with the rear periphery of the individual sheets being guided through the channel, the shallow recess further having a progressively shallower depth with increasing distance from its rear periphery;

and wherein the means defining a narrow channel further includes two projections projecting into the channel and urging a sheet located in the channel into the shallow recess, such that the sheet'"'"'s rear periphery abuts against the recess'"'"' rear periphery and is inhibited from moving rearwardly into the elongated storage chamber.

21. A container for carrying a plurality of substantially flat, flexible sheets and for allowing the sheets to be dispensed, one at a time, wherein the sheets are of substantially the same shape and size and are connected together in a chain and arranged in a uniform, fan-folded stack, the container comprising:

means defining an elongated storage chamber with a longitudinal axis and a transverse cross-sectional shape that corresponds generally with the shape of the individual sheets and with a size that permits the stack of fan-folded sheets to slide along the chamber'"'"'s longitudinal axis;

means located at a forward end of the elongated chamber for defining a slot sized to allow the connected sheets to be dispensed therethrough, one at a time; and

retainer means located in the elongated chamber, rearwardly of the slot, for defining a constriction having a cross-sectional size slightly smaller than the sheets, so as to retain the stack of fan-folded sheets behind it, wherein the constriction is defined by ridges projecting inwardly from two opposed walls, the ridges lying in a common plane, substantially perpendicular to the elongated storage chamber'"'"'s longitudinal axis, and wherein the sheets can be individually dispensed by pulling the end sheet through the slot, which flexes a trailing sheet past the constriction, with the remaining sheets being retained by the constriction.

22. A container for carrying a plurality of substantially flat, flexible sheets and for allowing the sheets to be dispensed, one at a time, wherein the sheets are of substantially the same shape and size and are connected together in a chain and arranged in a uniform, fan-folded stack, the container comprising:

means defining an elongated storage chamber with a longitudinal axis, the means defining the chamber including a bottom wall and a top wall;

means located at a forward end of the elongated storage chamber for defining a slot sized to allow the connected sheets to be dispensed therethrough, one at a time, in a plane substantially parallel with the chamber'"'"'s longitudinal axis and immediately adjacent to the chamber'"'"'s bottom wall;

retainer means located in the elongated chamber, rearwardly of the slot, for defining a constriction having a cross-sectional size slightly smaller than the sheets in a plane perpendicular to the chamber'"'"'s longitudinal axis, so as to retain the stack of fan-folded sheets behind it, wherein the sheets can be individually dispensed by pulling the end sheet through the slot, which flexes a trailing sheet past the constriction, with the remaining sheets being retained behind the constriction; and

means defining a flange projecting outwardly from opposite sides of the elongated storage chamber, between the chamber'"'"'s bottom wall and top wall, the flange being substantially parallel along its entire length with the chamber'"'"'s longitudinal axis.

23. A container as defined in claim 22, wherein the flange is located a substantially fixed distance from the bottom wall of the storage chamber and extends along substantially the entire length of the storage chamber.

24. A container as defined in claim 22, wherein:

the means defining the elongated chamber is formed from a single sheet of plastic material formed into two halves that are pivotally attached to each other; and

the flange projecting from opposite sides of the chamber is formed by abutting flanges of the two halves.

25. A container for carrying a plurality of substantially flat, flexible sheets and for allowing the sheets to be dispensed, one at a time, wherein the sheets are of substantially the same shape and size and are connected together by narrow strips to form a chain and arranged in a uniform, fan-folded stack, the container comprising:

means defining an elongated storage chamber with a longitudinal axis, the means defining the chamber including a bottom wall and a top wall;

means located at a forward end of the elongated storage chamber for defining a slot sized to allow the connected sheets to be dispensed therethrough, one at a time, in a plane substantially parallel with the chamber'"'"'s longitudinal axis and immediately adjacent to the chamber'"'"'s bottom wall;

means defining a flange projecting outwardly from opposite sides of the elongated storage chamber, between the chamber'"'"'s bottom wall and top wall, the flange being substantially parallel along its entire length with the chamber'"'"'s longitudinal axis;

wherein the chamber'"'"'s bottom wall and top wall both include a uniform series of shallow, transverse ridges, the series of ridges extending longitudinally along the lengths of the bottom wall and top wall, the ridges being sized to engage the narrow strips that connect together adjacent sheets in the stack of sheets and to maintain the sheets in an orientation substantially perpendicular to the chamber'"'"'s longitudinal axis.

26. A container for carrying a plurality of substantially flat, flexible sheets and for allowing the sheets to be dispensed, one at a time, wherein the sheets are of substantially the same shape and size and are connected together by narrow strips to form a chain of sheets arranged in a uniform, fan-folded stack, the container comprising:

means defining an elongated storage chamber with a longitudinal axis, the means defining the chamber including a bottom wall and a top wall; and

means located at a forward end of the elongated storage chamber for defining a slot sized to allow the connected sheets to be dispensed therethrough, one at a time;

wherein the chamber'"'"'s bottom wall and top wall both include a uniform series of shallow, transverse ridges, the series of ridges extending longitudinally along the lengths of the bottom wall and top wall, the ridges being sized to engage the narrow strips that connect together adjacent sheets in the stack of sheets and to maintain the sheets in an orientation substantially perpendicular to the chamber'"'"'s longitudinal axis.

27. A container as defined in claim 26, wherein:

the container further includes retainer means located in the elongated chamber, rearwardly of the slot, for defining a constriction having a cross-sectional size slightly smaller than the sheets in a plane perpendicular to the chamber'"'"'s longitudinal axis, so as to retain the stack of fan-folded sheets behind it, wherein the sheets can be individually dispensed by pulling the end sheet through the slot, which flexes a trailing sheet past the constriction, with the remaining sheets being retained behind the constriction; and

the top wall curves smoothly from the constriction to the slot.