Patent US3908336A successfully refreshed from Google Patents.
US3908336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for packaging and heat sealing of waste
Assignee: PACTOSAN AB
•
Filing: 1973-12-28
•
Granted: 1975-09-30
•
Expires: 1993-12-28
Abstract
Abstract A device for packing human waste in a tube includes a hollow mandrel and a supply of packaging tubes stored upon the exterior of the mandrel. The tube is fed upward across the upper mouth of the mandrel and downwardly through the interior of the mandrel. There is also provided a tube feeding means, positioned below the mandrel, as well as a pair of heat sealing jaws. A control means, in response to an activating device, initiates an operating cycle wherein the jaws are opened, the tube feeding means feeds a supply of tubing, the jaws are closed and locked, and then the jaws are heated to seal the tube.
Inventors
- 👤 Per Anders Goran Forslund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:48
CPC Classifications
A; A47; A47K; A47K11/00; A47K11/02; A47K11/026; B; B65; B65B; B65B9/00; B65B9/10; B65B9/15; Y; Y02; Y02A; Y02A50/00; Y02A50/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
205 words
Device for packaging of materials in a tube, particularly human waste in a plastic tube, comprising in combination: a vertically disposed hollow mandrel, a supply of packaging tube stored upon the exterior of and fed upwardly across the upper mouth of said mandrel and downwardly through the interior thereof, a tube feeding means positioned beneath said mandrel, said tube-feeding means being provided with two parallel gearedtogether shafts straddling said tube, a motor for driving said shafts, a pair of reciprocatable transversal heat-sealing jaws straddling said tube and coacting with said shafts, a controllably activatable control unit for causing said motor to rotate for an operating cycle, mean responsive to the rotation of said motor for opening and then partially closing said jaws, means responsive to the rotation of said motor for activating said tube-feeding means to feed a predetermined length of said tube while said jaws are open, an operating member that upon operation activates said control unit, means responsive to said operating member and operable after completion of said operating cycle for said tube-feeding means for presSing said jaws together, and means operable when said jaws are together for transmitting an energy impulse to said jaws for forming a transverse seal across said tube.
Claim 2
Dependent Claim
205 words
Device for packaging of materials in a tube, particularly human waste in a plastic tube, comprising in combination: a vertically disposed hollow mandrel, a supply of packaging tube stored upon the exterior of and fed upwardly across the upper mouth of said mandrel and downwardly through the interior thereof, a tube feeding means positioned beneath said mandrel, said tube-feeding means being provided with two parallel gearedtogether shafts straddling said tube, a motor for driving said shafts, a pair of reciprocatable transversal heat-sealing jaws straddling said tube and coacting with said shafts, a controllably activatable control unit for causing said motor to rotate for an operating cycle, mean responsive to the rotation of said motor for opening and then partially closing said jaws, means responsive to the rotation of said motor for activating said tube-feeding means to feed a predetermined length of said tube while said jaws are open, an operating member that upon operation activates said control unit, means responsive to said operating member and operable after completion of said operating cycle for said tube-feeding means for presSing said jaws together, and means operable when said jaws are together for transmitting an energy impulse to said jaws for forming a transverse seal across said tube.
Claim 3
Dependent Claim
44 words
The device of claim 1, wherein said shafts of said tube-feeding means are each provided with a pair of feeding discs and further comprising cams on said feeding discs, and a pair of swingable arms coacting with said cams for supporting said heat-sealing jaws.
Claim 4
Dependent Claim
29 words
The device of claim 2 wherein said pairs of arms are so disposed that said jaws in said starting position are separated from each other by approximately 3 millimeters.
Claim 5
Dependent Claim
56 words
The device of claim 2 further comprising a third pair of swingable arms disposed as a lever acting on one of said jaw-supporting pairs of arms and a link mechanism for connecting said third pair of swingable arms with said operative member so that said jaws can be firmly pressed together by operation of said member.
Claim 6
Dependent Claim
38 words
The device of claim 2 wherein the inner diameter of said mandrel at its outlet end is greater than the distance in the axial direction between said pair of feeding discs on each shaft of said tube-feeding means.
Claim 7
Dependent Claim
45 words
The device of claim 5 further comprising a tube-guide disposed beneath the outlet end of said mandrel for screening off the plastic tube from the elements of said feeding means except where said feeding discs grip the plastic tube with small areas of their circumferences.
Claim 8
Dependent Claim
49 words
The device of claim 1 wherein said control unit comprises a voltage-sensing circuit for sensing an input voltage for controlling the period of time of said energy impulse in accordance therewith so that the energy content of said energy impulse is within certain limits independent of the input voltage.
References Cited (Backward Citations)
US2831302A
Cited
US3173233A
Cited
US3488780A
Cited
US3553924A
Cited
US3617696A
Cited
US3563002A
Cited
US3583126A
Cited
US3726060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |