Patent US3760558A successfully refreshed from Google Patents.
US3760558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing sacks from a hose of thermally-joined material
Assignee: Individual
•
Filing: 1971-09-09
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Granted: 1973-09-25
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Expires: 1991-09-09
Abstract
Abstract A guide mandrel adapted for positioning and intermittently positively moving a tube, mounted on a common frame of the apparatus, is hollow and has a port on the side of a charging pipe telescopically connected with a means adapted for cutting through the tube wall, with such means being a movable continuation of the charging pipe and connecting the latter via the cut in the tube wall and the port with the hollow of the mandrel in the course of filling a sack.
Inventors
- 👤 I Kaminsky
- 👤 G Markovsky
- 👤 A Sinichenko
- 👤 A Romanenko
- 👤 V Pimenov
- 👤 N Levchenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:51
CPC Classifications
B; B65; B65B; B65B9/00; B65B9/10; B65B9/13
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
207 words
An apparatus for manufacturing sacks from a flat tube of thermally joined material and for weld-sealing the sacks after filling, comprising a common frame; there being mounted in technological succession on the common frame: a reel provided with a flat tube; a rigid hollow guide mandrel adapted to accommodate the tube leaving said reel; a means for cutting through the wall of the tube accommodated on the mandrel; a feeder provided with a charging pipe adapted for filling with product a manufactured sack through the cut formed in the wall of the tube; a device for sealing said sack; said guide mandrel being provided with a closed, substantially wedge-shaped upper and, an open lower end, and a port in proximity to the closed upper end and being on the side thereof facing said charging pipe; said charging pipe being telescopically connected with said cutting means; said means being a movable continuation of said charging pipe and connecting the charging pipe via said cut in the tube wall and said port of the mandrel with the hollow of the mandrel in the course of filling the sack and drive rollers engaging the tube accommodated on the mandrel for intermittent positive displacement of the tube relative to the mandrel.
Claim 2
Independent Claim
207 words
An apparatus for manufacturing sacks from a flat tube of thermally joined material and for weld-sealing the sacks after filling, comprising a common frame; there being mounted in technological succession on the common frame: a reel provided with a flat tube; a rigid hollow guide mandrel adapted to accommodate the tube leaving said reel; a means for cutting through the wall of the tube accommodated on the mandrel; a feeder provided with a charging pipe adapted for filling with product a manufactured sack through the cut formed in the wall of the tube; a device for sealing said sack; said guide mandrel being provided with a closed, substantially wedge-shaped upper and, an open lower end, and a port in proximity to the closed upper end and being on the side thereof facing said charging pipe; said charging pipe being telescopically connected with said cutting means; said means being a movable continuation of said charging pipe and connecting the charging pipe via said cut in the tube wall and said port of the mandrel with the hollow of the mandrel in the course of filling the sack and drive rollers engaging the tube accommodated on the mandrel for intermittent positive displacement of the tube relative to the mandrel.
Claim 3
Dependent Claim
27 words
The apparatus as claimed in claim 1 including outer supporting rollers for the mandrel below said side port providing a preset position of the mandrel in space.
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |