US3656274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for producing and filling bags
Assignee: Individual
•
Filing: 1970-04-27
•
Granted: 1972-04-18
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Expires: 1990-04-27
Abstract
Abstract A machine for producing bags from two parallel strips of material and for filling a solid or liquid product into the bags. The strips are welded together to form individual bags which are carried through subsequent stations, including filling and closing stations, suspended on two flexible blades engaging below folded edge zones of the strips. The blades are pulled apart to open the bag mouth in the filling station in which a two-part funnel is introduced into the bag mouth and opened to clamp the mouth against the flexible blades while the bag is being filled through the funnel. The bags are fed to the closing station with their mouths slightly open so that a rotatable tube may be inserted therein and rotated to twist the bag mouth together while it is held to the tube by suction and the body of the bag is held against rotation.
Inventors
- 👤 Ove Andersen Vind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:57
CPC Classifications
B; B65; B65B; B65B43/00; B65B43/04; B65B5/00; B65B5/04; B65B5/045
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
183 words
A machine for producing and filling bags, comprising means for horizontally advancing a continuous sheet material comprising two parallel strips, means for outwardly folding a marginal edge portion of each of the strips when said strips are advanced, folded edge portions being disposed adjacent a mouth of a bag subsequently formed from said strips, means for joining together said strips along a desired outline of a bag, means for separating the bag thus formed from said sheet material, holding means for gripping the two strips from the outside adjacent the mouth of the bag and for transporting the bag to a filling station, said holding means comprising two thin, flexible blades which, subsequent to the folding, are introduced into the two folds formed and means for introducing the blades into said folds, means associated with said filling station for spacing said flexible blades apart from one another to open the mouth of said bag, means for inserting a product into the opened bag, means for subsequently moving the blades towards one another, and means for transporting the filled bag to a closing station.
Claim 2
Dependent Claim
183 words
A machine for producing and filling bags, comprising means for horizontally advancing a continuous sheet material comprising two parallel strips, means for outwardly folding a marginal edge portion of each of the strips when said strips are advanced, folded edge portions being disposed adjacent a mouth of a bag subsequently formed from said strips, means for joining together said strips along a desired outline of a bag, means for separating the bag thus formed from said sheet material, holding means for gripping the two strips from the outside adjacent the mouth of the bag and for transporting the bag to a filling station, said holding means comprising two thin, flexible blades which, subsequent to the folding, are introduced into the two folds formed and means for introducing the blades into said folds, means associated with said filling station for spacing said flexible blades apart from one another to open the mouth of said bag, means for inserting a product into the opened bag, means for subsequently moving the blades towards one another, and means for transporting the filled bag to a closing station.
Claim 3
Dependent Claim
67 words
A machine according to claim 1 in which said filling station comprises a funnel which is slit lengthwise into two parts, means to swing said funnel into the open bag from an essentially horizontal position outside said bag, and means for effecting a controlled swinging of the two funnel parts towards and away from each other about individual transverse axes at the wide end of the funnel.
Claim 4
Dependent Claim
33 words
A machine according to claim 1, including arms mounting said blades displaceable relative to each other, and means to raise and lower said arms relative to the path of advance of said strips.
Claim 5
Dependent Claim
57 words
A machine according to claim 3, including frame comprising said two arms, said means to raise and lower said arms comprising means to drive the frame along a path parallel to the path of advance of said strips, and means defining said path for the frame with positions thereon in which the frame is lowered and raised.
Claim 6
Dependent Claim
17 words
A machine according to claim 4, in which said means defining said path comprises a guide track.
Claim 7
Dependent Claim
25 words
A machine according to claim 5, in which eaCh of said frames has a roller guide on said track for effecting lowering and raising thereof.
Claim 8
Dependent Claim
44 words
A machine according to claim 4, in which said arms are each provided with a cam follower, and in which said means to space apart said blades for opening said bag comprises means coactive with each cam follower on said arms displacing said blades.
Claim 9
Dependent Claim
43 words
A machine according to claim 1, in which said joining means comprises means to form in one operation the trailing longitudinal seam of a leading bag and a leading longitudinal seam of a next successive trailing bag, and means to join bottoms thereto.
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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |