Patent US3654015A successfully refreshed from Google Patents.
US3654015A
Expired / Lapsed
US
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Method of making pillow cases
Assignee: DAVID S BARTLETT JR
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Filing: 1968-11-05
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Granted: 1972-04-04
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Expires: 1988-11-05
Abstract
Abstract A pillow case formed from thin, non-woven fabric, initially taking the form of an elongated strip which is continuously fed, inwardly folded at its moving edges, then transversely cut whereupon glue is supplied to the edges of the resultant blank which is subsequently transversely folded to bring the glued edges into adherent relationship to form the finished pillow case.
Inventors
- 👤 Rupert M Purcell
- 👤 David S Bartlett Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:03
CPC Classifications
A; A47; A47G; A47G9/00; A47G9/02; A47G9/0238; A47G9/0253; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1015; Y10T156/1036
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
76 words
The method of forming an enclosure from a flat blank of non-woven fabric material which comprises the steps of inwardly folding opposite edges of the material blank to form two edge folds, applying heat and pressure to the edge folds to render them permanent, folding the blank along a transverse line relative to the edge folds to bring adjacent sections of both folded edges in abutting relation, and joining the folded edge sections of the blank.
Claim 2
Independent Claim
76 words
The method of forming an enclosure from a flat blank of non-woven fabric material which comprises the steps of inwardly folding opposite edges of the material blank to form two edge folds, applying heat and pressure to the edge folds to render them permanent, folding the blank along a transverse line relative to the edge folds to bring adjacent sections of both folded edges in abutting relation, and joining the folded edge sections of the blank.
Claim 3
Independent Claim
37 words
The method of forming an enclosure according to claim l wherein the folded edges are joined by the application of adhesive material thereto and the subsequent pressing of the folded edges with adhesive thereon into abutting contact.
Claim 4
Dependent Claim
42 words
The method of forming an enclosure according to claim 1 wherein the material blank is substantially rectangular and is folded transversely to provide two superimposed substantially equal dimension sections, only the side edges adjacent the transverse fold being folded and subsequently joined.
Claim 5
Independent Claim
102 words
The method of forming pillow cases or the like from an elongated strip of foldable non-wOven fabric material which comprises the steps of feeding the strip of material continuously from a supply roll, folding the moving side edges of the strip as it advances to form a narrow flat fold at each of the opposite edges thereof, applying heat and pressure to the edge folds to render them permanent, cutting the advancing edge-folded strip transversely to form a blank, applying the adhesive to the folded edges of the blank, and folding the blank transversely to bring the adhesive edges into adherent contact.
Claim 6
Independent Claim
102 words
The method of forming pillow cases or the like from an elongated strip of foldable non-wOven fabric material which comprises the steps of feeding the strip of material continuously from a supply roll, folding the moving side edges of the strip as it advances to form a narrow flat fold at each of the opposite edges thereof, applying heat and pressure to the edge folds to render them permanent, cutting the advancing edge-folded strip transversely to form a blank, applying the adhesive to the folded edges of the blank, and folding the blank transversely to bring the adhesive edges into adherent contact.
Claim 7
Dependent Claim
28 words
The method of forming pillow cases of the like according to claim 4 which comprises automatically centering the strip delivered from the supply roll during the feeding step.
Claim 8
Dependent Claim
46 words
The method of forming pillow cases or the like according to claim 4 wherein the strip of material is cut angularly and sequentially in corresponding relation to advance of the strip whereby the resultant completed cut is substantially perpendicular to the side edges of the strip.
Claim 9
Dependent Claim
23 words
The method of forming pillow cases or the like according to claim 4 which comprises orienting the blank resultant from said cutting step.
Claim 10
Dependent Claim
20 words
The method of forming pillow cases or the like according to claim 4 which comprises orienting of the folded blank.
Claim 11
Dependent Claim
21 words
The method of forming pillow cases or the like according to claim 8 which comprises sequentially stacking the oriented folded blanks.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |