Patent US3775945A successfully refreshed from Google Patents.
US3775945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for inflating bags
Assignee: FR Hesser Maschinenfabrik AG
•
Filing: 1971-12-13
•
Granted: 1973-12-04
•
Expires: 1991-12-13
Abstract
Abstract Apparatus for inflating a bag, as part of a process for automatically filling the bag, by inserting a mandrel, provided with an air outlet, into the bag and causing an elastomeric collar on the mandrel to engage the edges of the bag opening to provide a temporary seal therebetween.
Inventors
- 👤 P Kuhnle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:51
CPC Classifications
B; B65; B65B; B65B43/00; B65B43/26; B65B43/34; B65B43/36
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
84 words
In a packaging system having an apparatus for inflating bags, comprising: a bag opening mandrel; an air conduit terminating with a nozzle within said mandrel and together being adapted to be inserted into a bag for inflating the latter; a collar of resilient material arranged around the circumference of said mandrel at a location spaced from said air nozzle and effective to resiliently bear against the edge of the bag opening upon insertion of the mandrel into the bag for establishing a seal therebetween.
Claim 2
Dependent Claim
84 words
In a packaging system having an apparatus for inflating bags, comprising: a bag opening mandrel; an air conduit terminating with a nozzle within said mandrel and together being adapted to be inserted into a bag for inflating the latter; a collar of resilient material arranged around the circumference of said mandrel at a location spaced from said air nozzle and effective to resiliently bear against the edge of the bag opening upon insertion of the mandrel into the bag for establishing a seal therebetween.
Claim 3
Dependent Claim
20 words
Apparatus according to claim 1, wherein the bottom face of said collar is flat and extends radially from the mandrel.
Claim 4
Dependent Claim
25 words
Apparatus according to claim 2, wherein the plane of said flat face of the collar is arranged perpendicular to the length direction of the bag.
Claim 5
Dependent Claim
16 words
Apparatus according to claim 1, wherein said collar is composed of an open pore foam material.
Claim 6
Dependent Claim
10 words
Apparatus according to claim 4, wherein said material is elastomeric.
Claim 7
Dependent Claim
21 words
Apparatus according to claim 1, and structural means supporting said collar for relative vertical motion between said collar and said mandrel.
Claim 8
Dependent Claim
13 words
Apparatus according to claim 2, wherein said bottom face has a concave configuration.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |