Patent US3751875A successfully refreshed from Google Patents.
US3751875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for filling, sealing and dispensing bags
Assignee: Individual
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Filing: 1971-09-09
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Granted: 1973-08-14
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Expires: 1991-09-09
Abstract
Abstract A process and apparatus for filling, sealing and dispensing bags from a strip of interconnected bags which comprises moving the strip of bags from a supply roll along a path to at least one, but, preferably, two sprocket wheels. The strip of bags is provided with spaced sprocket apertures in a selvage portion along the edge corresponding to the open mouths of the bags, and these apertures are engaged by the sprockets on the sprocket wheels to move the strip of bags linearly at predetermined intervals. As the individual bags are brought into conjunction with a feed means, such as a chute or the like, they are filled, and are then moved through sealing and severing stations where the open mouths are sealed and the sealed bags are either totally severed from the selvage portion or are provided with scored or perforated lines to permit them to be thereafter severed from the selvage portion.
Inventors
- 👤 H Membrino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:31
CPC Classifications
B; B65; B65B; B65B9/00; B65B9/06; B65B9/08; B65B9/093; B65B43/00; B65B43/12; B65B43/123
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
230 words
A bag filling and sealing apparatus comprising a supply means for a linearly movable double-ply, bag-forming, thermoplastic strip, said strip having a linear selvage portion along one edge with a linear series of sprocket apertures in said selvage portion, a sprocket wheel assembly spaced from said supply means, said sprocket wheel assembly and said supply means forming a linear path therebetween for said strip, said sprocket wheel assembly having at least one sprocket wheel provided with peripherally positioned, radially extending sprocket pins successively engageable with the sprocket apertures in said selvage portion in such manner that said selvage position is in surface-to-surface contact with and is movably supported by said sprocket wheel as said strip passes thereover, said sprocket wheel assembly forming the sole supporting and conveying means for said strip as it passes from said supply means, drive means operatively connected to said sprocket wheel assembly, a feed means interposed in the path of travel of said strip, said feed means being constructed and arranged to insert filler material into successive bag units formed in said strip, sealing means positioned downstream of said feed means, said sealing means being constructed and arranged to form a linear seal across said bag units below said linear series of sprocket apertures, and severance means constructed and arranged to at least partially sever the filled and sealed bag units from said selvage portion.
Claim 2
Dependent Claim
230 words
A bag filling and sealing apparatus comprising a supply means for a linearly movable double-ply, bag-forming, thermoplastic strip, said strip having a linear selvage portion along one edge with a linear series of sprocket apertures in said selvage portion, a sprocket wheel assembly spaced from said supply means, said sprocket wheel assembly and said supply means forming a linear path therebetween for said strip, said sprocket wheel assembly having at least one sprocket wheel provided with peripherally positioned, radially extending sprocket pins successively engageable with the sprocket apertures in said selvage portion in such manner that said selvage position is in surface-to-surface contact with and is movably supported by said sprocket wheel as said strip passes thereover, said sprocket wheel assembly forming the sole supporting and conveying means for said strip as it passes from said supply means, drive means operatively connected to said sprocket wheel assembly, a feed means interposed in the path of travel of said strip, said feed means being constructed and arranged to insert filler material into successive bag units formed in said strip, sealing means positioned downstream of said feed means, said sealing means being constructed and arranged to form a linear seal across said bag units below said linear series of sprocket apertures, and severance means constructed and arranged to at least partially sever the filled and sealed bag units from said selvage portion.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1 wherein said severance means is a slicing means constructed and arranged to make a linear cut completely severing said selvage portion.
Claim 4
Dependent Claim
30 words
The apparatus of claim 1 wherein said severance means is a perforating means constructed and arranged to make a line of perforations between said selvage portion and said bag units.
Claim 5
Dependent Claim
119 words
The apparatus of claim 1 wherein forming means are provided, upstream from said sprocket wheel and from said feed means, for forming said bag units from an unformed strip of double ply material selected from the group consisting of over-folded flat sheet stock and tubular stock, said forming means comprising a pair of former elements relatively movable toward and against each other, at least one of said elements having a cutting blade, said forming means being so arranged in said path that a portion of said unformed strip passes between said former elements and is at least partially transversely severed thereby, and means actuating said forming means at timed intervals relative to the linear movement of said unformed strip.
Claim 6
Dependent Claim
15 words
The apparatus of claim 4 wherein at least one of said former elements is heated.
Claim 7
Dependent Claim
33 words
The apparatus of claim 1 wherein said sprocket wheel assembly comprises two sprocket wheels and said feed means is positioned in the path of travel of said strip between the two sprocket wheels.
Claim 8
Dependent Claim
14 words
The apparatus of claim 1 wherein said sealing means is a rotatable heated roller.
Claim 9
Dependent Claim
44 words
The apparatus of claim 6 wherein said second sprocket wheel is provided with a rotatable peripheral anvil portion coacting with said heated roller to form linear seal across said bag units as said bag units pass between said heated roller and said anvil portion.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |