US3746057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible filling spout for bag filling machine
Assignee: Dow Chemical Co
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Filing: 1971-06-07
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Granted: 1973-07-17
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Expires: 1991-06-07
Abstract
Abstract A collapsible filling spout including a sidewall member constructed such as of spring steel or the like so as to be deformably movable toward and away from a preferably stationary sidewall member disposed oppositely thereto. Such a spout is used cooperatively with opposed continuous belts which pass slidingly about the opposed sidewalls thereof, respectively. Spreadable flaps associated with the bags to be filled are gripped firmly between the sidewalls and the belts, respectively, and are thereby opened automatically accompanying outward deformation of the deformable sidewall.
Inventors
- 👤 O Titchenal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:09
CPC Classifications
B; B65; B65B; B65B39/00; B65B39/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
108 words
In a filling apparatus the combination of: a pair of movable endless belts, a filling element having oppositely disposed first and second sidewall portions interposed between said belts whereby the belts pass slidingly about said first and second sidewall portions thereof, said first sidewall portion defining a concave inner surface, said second sidewall portion being deformable, and means to deformably bow said second sidewall portion inwardly toward said concave surface of said first sidewall portion thereby placing said filling element in a nonfilling position, and to deformably bow said second sidewall portion reversely to define a second concave surface to place said filling element in a filling position.
Claim 2
Dependent Claim
108 words
In a filling apparatus the combination of: a pair of movable endless belts, a filling element having oppositely disposed first and second sidewall portions interposed between said belts whereby the belts pass slidingly about said first and second sidewall portions thereof, said first sidewall portion defining a concave inner surface, said second sidewall portion being deformable, and means to deformably bow said second sidewall portion inwardly toward said concave surface of said first sidewall portion thereby placing said filling element in a nonfilling position, and to deformably bow said second sidewall portion reversely to define a second concave surface to place said filling element in a filling position.
Claim 3
Dependent Claim
17 words
The combination of claim 1 wherein said second sidewall portion comprises resiliently deformable material like sheet metal.
Claim 4
Dependent Claim
36 words
The combination of claim 1 wherein said second sidewall portion includes leading and trailing edges, at least one of said edges being reversely movable responsive to operating the filling element between said non-filling and filling positions.
Claim 5
Dependent Claim
48 words
The combinations of claim 3 wherein said filling element includes opposed stationary members disposed adjacent its leading and trailing edges, respectively, said movable edge being slidably carried adjacent one of said stationary members, the opposite edge of said filling element being fixedly secured adjacent said other stationary member.
Claim 6
Dependent Claim
42 words
The combination of claim 4 wherein said first sidewall portion defines an inner surface disposed generally concave to said second sidewall portion, said second sidewall portion being deformably movable to a position closely adjacent said concave surface to assume said non-filling position.
Claim 7
Dependent Claim
36 words
The combination of claim 6 wherein in the non-filling position said deformable second sidewall portion defines a configuration which is in intimate relation with respect to said concave inner surface defined by said first sidewall portion.
Claim 8
Dependent Claim
33 words
The combination of claim 6 wherein the filling position, said second deformable sidewall portion defines a configuration which is a mirror image of said concave inner surface defined by said first sidewall portion.
Claim 9
Dependent Claim
76 words
A filling element comprising first and second opposed sidewall portions, at least a part of said second sidewall portion being deformably movable toward and away from said first sidewall portion, said first sidewall portion defining a stationary inner concave surface disposed opposite said deformably movable part of said second sidewall portion, and means to deformably move said part toward and away from said first sidewall portion to operate said filling elements between non-fiLling and filling positions.
Claim 10
Dependent Claim
76 words
A filling element comprising first and second opposed sidewall portions, at least a part of said second sidewall portion being deformably movable toward and away from said first sidewall portion, said first sidewall portion defining a stationary inner concave surface disposed opposite said deformably movable part of said second sidewall portion, and means to deformably move said part toward and away from said first sidewall portion to operate said filling elements between non-fiLling and filling positions.
Claim 11
Dependent Claim
74 words
The filling element of claim 8 wherein said second sidewall portion includes a movable and a stationary edge affixed to bracket means respectively, said movable edge being movable in one direction to place said filling element in a filling position and movable in a second direction to place said filling element in a non-filling position, said bracket means affixing said movable edge including means for receiving said movable edge when in a non-filling position.
Claim 12
Dependent Claim
78 words
A filling spout comprising first and second sidewall portions, said first sidewall portion having an inner surface portion defining a hollow region disposedly opposite to at least an area of said second sidewall portion, said second sidewall portion being deformably movable, and means to deformably move said second sidewall portion into said hollow region to operate the filling element to a non-filling position, and deformably outwardly from said non-filling position to operate said spout to a filling position.
Claim 13
Dependent Claim
78 words
A filling spout comprising first and second sidewall portions, said first sidewall portion having an inner surface portion defining a hollow region disposedly opposite to at least an area of said second sidewall portion, said second sidewall portion being deformably movable, and means to deformably move said second sidewall portion into said hollow region to operate the filling element to a non-filling position, and deformably outwardly from said non-filling position to operate said spout to a filling position.
Claim 14
Dependent Claim
33 words
The filling element of claim 10 wherein in the non-filling position said means deformably moves said second sidewall portion such that the profile thereof closely assumes the configuration of said inner surface portion.
Claim 15
Dependent Claim
32 words
The spout of claim 11 wherein in said filling position, said means deformably moves said second sidewall portion to closely assume the mirror image of the configuration thereof in the non-filling position.
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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) | 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 |