US3660959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming product-filled bag
Assignee: Individual
•
Filing: 1970-03-31
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Granted: 1972-05-09
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Expires: 1990-03-31
Abstract
Abstract A commodity bag formed of a thermoplastic material, such as polyethylene, provided with gussets along each side and with reinforcing seams at the bottom to impart a square bottom to the bag when opened and which, after being filled with a commodity, has the central portion of its upper edges sealed together to form a handle for the bag.
Inventors
- 👤 Arthur E La Fleur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:43
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/06; B65D33/065
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
143 words
The method of packaging commodities in a bag formed of a thermoplastic material, said bag being of the type having an open upper end defined by generally continuously straight upper free edges of the bag side walls which comprises first filling the bag with commodities and then bringing opposed central portions of said upper edges into mutually contacting relation and thereafter partially sealing the opposed contacting upper free edges of the bag in a direction lengthwise of said edges of the central portion thereof to thereby partially close the upper end of the bag at said central portion while leaving an opening at the upper end of the bag adjacent each end of the central sealed portion whereby the sealed central portion of said upper edges can be gathered to form a handle which is adapted to be manually encircled through said openings.
Claim 2
Independent Claim
143 words
The method of packaging commodities in a bag formed of a thermoplastic material, said bag being of the type having an open upper end defined by generally continuously straight upper free edges of the bag side walls which comprises first filling the bag with commodities and then bringing opposed central portions of said upper edges into mutually contacting relation and thereafter partially sealing the opposed contacting upper free edges of the bag in a direction lengthwise of said edges of the central portion thereof to thereby partially close the upper end of the bag at said central portion while leaving an opening at the upper end of the bag adjacent each end of the central sealed portion whereby the sealed central portion of said upper edges can be gathered to form a handle which is adapted to be manually encircled through said openings.
Claim 3
Dependent Claim
78 words
The method called for in claim 1 wherein said upper free edges of the bag extend continuously around the periphery thereof in a generally horizontal plane when the bag is in an upright open position and said sealing step is performed by drawing said opposed central portions of said free edges together in face-to-face relation over the commodities in the bag and heat sealing said portions together along a line spaced slightly below the juxtaposed free edge portions.
Claim 4
Dependent Claim
15 words
The method called for in claim 2 wherein said line of sealing is upwardly concave.
Claim 5
Dependent Claim
69 words
The method called for in claim 1 wherein the bag is filled with commodities to a level sufficiently below said upper free edges to enable said opposed central portions of said upper edges to be drawn together over the commodities therein in face-to-face relation and said sealing is effected by heat sealing the juxtaposed central portions along a line spaced slightly below the opposed free edges of the bag.
Claim 6
Dependent Claim
33 words
The method called for in claim 4 wherein the length of the sealed edge portion is greater than the length of each of said openings measured in the direction lengthwise of the seal.
Claim 7
Dependent Claim
58 words
The method called for in claim 1 wherein the bag is generally rectangular in horizontal cross section when in an upright open position and comprises two opposite side walls and two opposite end walls, the side walls being wider than the end walls, said seal extending along a major portion of the upper edges of said side walls.
Claim 8
Dependent Claim
33 words
The method called for in claim 6 wherein the seal terminates at each end such that the major portion of the upper edges of said end walls remains unsealed and provides said openings.
Claim 9
Dependent Claim
100 words
The method called for in claim 1 wherein the open upper end of the bag is closed after filling by spreading apart opposite localized portions of said free edges so as to draw said opposite edges together in flatwise relation and thereby form the open end of the bag into a generally straight flat seam of double thickness having a length equal to half the peripheral dimension of the open end of the bag, said seal being formed along said straight flat seam and terminating at each end inwardly of the opposite ends of said seam to provide said openings.
Claim 10
Dependent Claim
27 words
The method called for in claim 8 wherein the length of said seal is greater than the length of each of said openings measured along said seam.
Claim 11
Dependent Claim
40 words
The method called for in claim 1 wherein the central sealed portion of said upper edges has a length at least as great as the length of each of said end openings measured in the direction lengthwise of the seal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |