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Publication numberUS3371850 A
Publication typeGrant
Publication dateMar 5, 1968
Filing dateMar 7, 1967
Priority dateMar 7, 1967
Publication numberUS 3371850 A, US 3371850A, US-A-3371850, US3371850 A, US3371850A
InventorsJoseph Gorman
Original AssigneeJoseph Gorman
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Convertible envelope
US 3371850 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

March 5, 1968 m 3,371,850

CONVERTIBLE ENVELOPE Filed March 7, 1967 INVENTOR. JOSEPH GO RMAN United States Patent 3,371,850 CONVERTIBLE ENVELOPE Joseph German, 2514 W. Berwyn Ave., Chicago, Ill. 60625 Filed Mar. 7, 1967, Ser. No. 621,268 1 Claim. (Cl. 229-68) ABSTRACT OF THE DISCLOSURE A letter or business paper envelope including a perforated tab integral with the sealable flap of the envelope. When separated from the flap, the tab may be used as a file indicator with the flap tucked in the envelope pocket. When the tab is inserted in the envelope pocket, the flap may be secured to the back of the envelope for mailmg.

Background Attempts have been made to enhance the utility of conventional file folders by providing a flap portion which is folded over the file folder to enclose it. A suggestion has been made to form tabs or fingers in the flap portion and corresponding slots in the fold between the flap and the body of the folder. When it is desired to form an index tab, at finger is bent beneath the flap and slipped through its associated slot to protrude above the file folder in forming a flag.

So far as I am aware, there have been no prior attempts to provide a letter or business paper envelope which may be readily converted between a file container with attached index indicator and a conventional mailing envelope without substantially altering the basic manufacturing techniques employed in producing conventional envelopes. Previous attempts to provide an indexable pocket envelope which requires structural additions to the conventional letter envelope have not met with consumer acceptance.

Summary The present invention provides an index tab as an integral part of the scalable flap of a conventional letter or business envelope which may readily be separated from the flap. The fold line between the envelope and its flap defines the hinged or swinging side of the tab. Hence, when the tab is separated from the flap, it may be rotated about the flap fold line to protrude above the upper periphery of the envelope to define an index indicator. When thus used, the flap of the envelope is tucked into the envelope pocket and there is thus provided a filing pocket with associated index tab.

If it is later desired to mail the envelope along with its contents, the flap is removed from the envelope pocket and the index tab is inserted into the pocket. The back of the envelope will then hold the index tab in place when the flap is sealed to the back.

Other advantages and features of the instant invention will be obvious from the following detailed description of the preferred embodiment accompanied by the attached drawing.

The drawing FIG. 1 illustrates a preferred embodiment of the present invention;

FIG. 2 shows the envelope of FIG. 1 with the index tab separated from the envelope flap FIG. 3 shows the envelope of FIG. 1 with the index tab separated from the flap and the flap tucked into the envelope pocket;

FIG. 4 illustrates the envelope of FIG. 1 with the index tab separated from the flap but tucked in the envelope pocket preparatory to sealing the envelope; and

3,371,850 Patented Mar. 5, 1968 Referring now to the drawing, in FIG. 1 is seen a view of the back of a conventional business or letter paper envelope, generally designated as 10. As is shown, the back of the envelope includes a left side flap 11 and a right side flap 12 folded toward one another. The base of the back side 13 has a form which is generally that of a truncated triangle. The side flaps 11 and 12 are conventionally glued to the member 13 during the manufacturing process.

Hence, the front of the envelope together with the fabricated back part comprising the flaps 11, 12 and the base member 13 define an envelope pocket into which letters and the like may be inserted. The envelope pocket is generally indicated as 14 in FIG. 4.

At the top of the envelope there is provided a sealing flap 15 which is an extension of the front surface of the envelope bent rearward. The flap 15 is hinged about a fold line 16 at the very upper periphery of the envelope 10 and extends lengthwise thereof from side to side.

A perforation is formed in the flap 15 comprising two side sections indicated by the dashed lines labeled 17 and 18. The side perforations extend parallel to the side folds of the envelope 10 from the upper fold line 16 to a point intermediate the width of the flap. The two side perforations 17 and 18 are joined by an end perforation 19 which is substantially parallel to the fold line 16.

The perforation lines 17, 18 and 19 define a tab 20 which, when separated from the flap 15 as indicated in FIG. 2, may be independently hinged about the fold line 16.

As seen in FIG. 4, the inner side of the flap 15 is provided with a glued portion 21 for sealing to the back of the envelope.

As shown in FIG. 2, when the tab portion 20 is separated fr'om the flap 15 along the perforation lines 17, 18 and 19, it may be rotated about the fold line 16 into an upright position, and the envelope may be provided with printed indicia or the tab itself may serve to receive hand written indexing information.

In its preferred use, the pocket of the envelope 10 will itself serve as the file folder or container; and in this situation, the flap 15 will be tucked into the envelope pocket as seen in FIG. 3. Hence, there is provided a convenient receptacle for filing and storing bills, invoices, etc., which may be indexed, for example, according to the date on which they fall due.

When it is desired to then mail the contents of the envelope 10, the tab 20 is tucked into the envelope pocket as seen in FIG. 4 by the chain line. The gusset 12 will then hold the tab 20 within the envelope pocket as the flap 15 is sealed to the back of the envelope as seen in FIG. 5.

It is particularly important to note that my invention contemplates providing this useful convertible envelope without requiring additional steps in the manufacturing process. The simple perforations can be formed conveniently at any time during the manufacturing process without major change in production machinery. For instance, the perforations may be formed when the envelopes are being cut from the paper web.

Thus has been described a convenient and simple convertible paper envelope with an index tab provided as an integral portion of the sealable flap of the envelope. The envelop may serve as an index file container, and then be readily converted to a conventional mailing envelope.

Having thus described in detail a preferred embodiment of my invention, it will be obvious that the size or shape of the tab may be varied to suit the purpose of the user, and that one or more tabs may be defined in the flap. Further, the tab or tabs may assume any arbitrary position along the flap as long as the unperforated hinging side of the flap is integral with the flap fold line. It is intended that all such modifications be covered as they are embraced Within the spirit and scope of the appended claim.

I claim:

1. A sealable paper envelope comprising front and back sides defining a pocket, a flap integral with said front side and folded over said back side for sealing said pocket, an index tab integral With said flap, said tab being defined by perforations around three sides and the fourth side lying along said fold line, said tab being separatable from said flap to bend about said fold line, whereby when said tab is separated from said flap, said flap may be tucked into said pocket, said tab may serve as an indexing means, and said envelope may be used for mailing by inserting said tab into said pocket and sealing said flap to said back.

References Cited UNITED STATES PATENTS 783,365 2/1905 Coleman 12916.7 1,303,063 5/1919 Hoock -229-73 2,013,664 9/1935 Marowitz 1291 6.7 3,334,922 8/1967 Zalkind 22976 X DAVID M. BOCKENEK, Primary Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US783365 *Sep 19, 1904Feb 21, 1905James Allen DorseyFolder.
US1303063 *Sep 13, 1918May 6, 1919 hoock
US2013664 *Oct 23, 1933Sep 10, 1935Arthur MarowitzEnvelope and folder
US3334922 *Jun 24, 1965Aug 8, 1967Printline Co IncBilling and mailing device
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3680969 *Aug 4, 1970Aug 1, 1972Gorman JosephPocket-folder and binder
US4583764 *May 7, 1984Apr 22, 1986Fritz SteffenWorking folder
US5662265 *Mar 22, 1996Sep 2, 1997International Paper CompanyPaperboard container with indicia tabs
US5690273 *Jan 15, 1997Nov 25, 1997International Paper CompanyPaperboard container with indicia tabs
US6138900 *Nov 23, 1998Oct 31, 2000Ncr CorporationFlip-up tab pouch
US6220504 *Oct 11, 1999Apr 24, 2001Timothy J. FlynnEnvelope with a removable panel
US6220505Apr 14, 2000Apr 24, 2001Timothy J. FlynnEnvelope having a removable panel
US6279817Apr 14, 2000Aug 28, 2001Timothy J. FlynnLaminated envelope assembly
US6352198Apr 14, 2000Mar 5, 2002Timothy J. FlynnEnvelope having non-adhesive applied label
US6357651Apr 14, 2000Mar 19, 2002Timothy J. FlynnIndex tab label
US6364198Apr 14, 2000Apr 2, 2002Timothy J. FlynnEnvelope having nested rings
US6367689 *Oct 11, 1999Apr 9, 2002Timothy J. FlynnEnvelope with a tab
US6375065Apr 14, 2000Apr 23, 2002Timothy J. FlynnEnvelope assembly having registration lines
US6375604Jun 16, 1999Apr 23, 2002Avery Dennison CorporationMethod of forming a tabbed assembly
US6415976Apr 14, 2000Jul 9, 2002Timothy J. FlynnEnvelope having ring binder holes
US6425519 *Apr 14, 2000Jul 30, 2002Timothy J. FlynnEnvelope assembly having partial protective panel
US6427905Apr 14, 2000Aug 6, 2002Timothy J. FlynnEnvelope assembly having offset tearable lines
US6488999Apr 14, 2000Dec 3, 2002Timothy J. FlynnPrintable label coating
US6499652Apr 14, 2000Dec 31, 2002Timothy J. FlynnEnvelope assembly having fold lines
US6523737Apr 14, 2000Feb 25, 2003Continental Datalabel, Inc.Envelope assembly having print protective panel
US7850062 *Aug 21, 2007Dec 14, 2010Smead Manufacturing CompanyIntegrated tab file system
US8534534Dec 14, 2010Sep 17, 2013Smead Manufacturing CompanyIntegrated tab file system
US20060151587 *Jan 12, 2005Jul 13, 2006Garbarino Michael JConvertible envelope
US20080041924 *Aug 21, 2007Feb 21, 2008Duane ChristensenIntegrated tab file system
US20110079636 *Dec 14, 2010Apr 7, 2011Smead Manufacturing CompanyIntegrated Tab File System
USD689548Mar 25, 2011Sep 10, 2013Ideastream Consumer Products, LlcFolder
USD691195Mar 25, 2011Oct 8, 2013Ideastream Consumer Products, LlcFolder
U.S. Classification229/68.1, 283/36, 493/210, 40/359, 283/116
International ClassificationB65D27/06
Cooperative ClassificationB65D27/06
European ClassificationB65D27/06