Patent US3746056A successfully refreshed from Google Patents.
US3746056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible filling spout
Assignee: Dow Chemical Co
•
Filing: 1971-06-07
•
Granted: 1973-07-17
•
Expires: 1991-06-07
Abstract
Abstract A collapsible filling spout employing sidewall members constructed of a resilient, deformable material, preferably spring steel or the like. The spout is deformably movably between a rest or collapsed position, and a filling position wherein such sidewalls are forcibly flexed or ''''bowed'''' outwardly and apart from each other. Such a spout can be used cooperatively with opposed movable belts which pass tautly about the indicated sidewalls, respectively. Spreadable flaps associated with the bags to be filled are gripped firmly underneath the belts and against the sidewalls, so that accompanying outward expansion or deformation of the spout, the bags are opened automatically and held in such position as to efficiently receive the product fill. The use of such a spout minimizes the height required of the bag flaps.
Inventors
- 👤 O Titchenal
- 👤 W Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:49
CPC Classifications
B; B65; B65B; B65B43/00; B65B43/26; B65B43/267; B65B39/00; B65B39/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
157 words
In an apparatus for filling a series of linearly connected bag elements, a combination comprising: a pair of movable endless belts, a filling element having two oppositely disposed sidewall portions interposed snugly between said belts whereby the belts pass slidingly about said oppositely disposed sidewall portions, respectively, said sidewall portions being deformable, means for deformably moving said sidewall portions to repeatedly operate said filling element between a rest position and a bag filling position, said filling element further having a leading end and a trailing end, at least one end of said filling element being movable reversely in the direction of feed of said bags, said belts engaging each other adjacent said end and extending outwardly therefrom, the belts selectively in said engaging region being movable reversely in said feed direction, and means to reversely move in said feed direction, and means to reversely move said region of the belts to follow the movement of said end.
Claim 2
Dependent Claim
157 words
In an apparatus for filling a series of linearly connected bag elements, a combination comprising: a pair of movable endless belts, a filling element having two oppositely disposed sidewall portions interposed snugly between said belts whereby the belts pass slidingly about said oppositely disposed sidewall portions, respectively, said sidewall portions being deformable, means for deformably moving said sidewall portions to repeatedly operate said filling element between a rest position and a bag filling position, said filling element further having a leading end and a trailing end, at least one end of said filling element being movable reversely in the direction of feed of said bags, said belts engaging each other adjacent said end and extending outwardly therefrom, the belts selectively in said engaging region being movable reversely in said feed direction, and means to reversely move in said feed direction, and means to reversely move said region of the belts to follow the movement of said end.
Claim 3
Dependent Claim
24 words
The combination of claim 1 wherein said means deformably operating said filling element includes means for guiding said bag elements towards said filling element.
Claim 4
Dependent Claim
20 words
The combination of claim 2 including means for maintaining said belts in close contact with said filling element sidewall portions.
Claim 5
Dependent Claim
149 words
In apparatus for filling a bag element of a series of linearly connected bag elements, a combination comprising: a hollow filling element having opposed deformable sidewall portions, at least one of said portions being movable in a direction generally transverse to the direction of feed of said bag, elements, means to reversely move said sidewall portion to operate said filling element between rest and filling positions, means disposed adjacent one side of the filling element for advancing the bag elements to said filling element, means for advancing said series of linearly connected bag lements when said filling element is in a filling position thereby preventing any foreshortening of a bag element being filled, means for guiding said bag elements while advancing in said apparatus, and means for moving said advancing means reversely in the feed direction responsive to operating said filling element spout between said rest and filling positions.
Claim 6
Dependent Claim
149 words
In apparatus for filling a bag element of a series of linearly connected bag elements, a combination comprising: a hollow filling element having opposed deformable sidewall portions, at least one of said portions being movable in a direction generally transverse to the direction of feed of said bag, elements, means to reversely move said sidewall portion to operate said filling element between rest and filling positions, means disposed adjacent one side of the filling element for advancing the bag elements to said filling element, means for advancing said series of linearly connected bag lements when said filling element is in a filling position thereby preventing any foreshortening of a bag element being filled, means for guiding said bag elements while advancing in said apparatus, and means for moving said advancing means reversely in the feed direction responsive to operating said filling element spout between said rest and filling positions.
Claim 7
Dependent Claim
31 words
The combination of claim 4 wherein said advancing means comprise a pair of movable belts which grip said bag elements between them and feed said bag elements to the filling element.
Claim 8
Dependent Claim
41 words
The apparatus of claim 5 wherein said belts approach said filliNg element and pass in taut sliding relationship about said opposite side portions, respectively, to firmly hold oppositely disposed portions of a bag element thereagainst during filling of said bag element.
Claim 9
Dependent Claim
37 words
The combination of claim 6 wherein said sidewall portions comprise deformable material, and wherein said filling element is operated between the rest and filling positions by deformably moving said sidewall portions toward and apart from each other.
References Cited (Backward Citations)
US2885846A
Cited
US2853842A
Cited
US3445982A
Cited
US3462913A
Cited
US3583127A
Cited
US3597895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |