US3905175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for closing the rear flap of a parallelepiped box
Assignee: Individual
•
Filing: 1974-04-09
•
Granted: 1975-09-16
•
Expires: 1994-04-09
Abstract
Abstract There is disclosed a device for closing the rear flap of a parallelepiped box. Such device comprises an axially movable and rotatable shaft disposed on one side of the path of advancement of the box and directed transversally thereto, a rod fixed perpendicularly to the shaft, control means operable to cause the axial movement of the shaft from a retracted position to an extended position in which the rod is in the path of advancement of the box, and guide means for transforming at least the last part of the axial movement of the shaft into a helical movement of the shaft and of the rod, which enable the rod to be introduced below the rear flap of the box and to be rotated in engagement with such rear flap to cause closing thereof.
Inventors
- 👤 Augusto Marchetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:05
CPC Classifications
B; B65; B65B; B65B7/00; B65B7/16; B65B7/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
214 words
Device for closing the rear flap of a parallelepiped box, comprising a support surface along which the box is made to advance, an axially translatable and rotatable shaft disposed on one side of said support surface and directed transverse to the path of advancement of the box, a rod fixed perpendicularly to that end of the shaft nearer said support surface, control means operable after the box has advanced beyond the shaft in order to cause the axial movement of said shaft from a retracted position in which said rod is outside the path of advancement of the box to an extended position in which said rod is inserted into the path of advancement of the box, and guide means for transforming at least the last part of said axial movement of the shaft into a helical movement which enables said rod to rotate simultaneously about the axis of the shaft from a first position in which it is directed towards the inlet end of the support surface to a second position in which it is directed towards the exit end of the support surface, passing through a succession of intermediate positions in which said rod engages from below with the rear flap of the box and bends it over into the closure position.
Claim 2
Dependent Claim
214 words
Device for closing the rear flap of a parallelepiped box, comprising a support surface along which the box is made to advance, an axially translatable and rotatable shaft disposed on one side of said support surface and directed transverse to the path of advancement of the box, a rod fixed perpendicularly to that end of the shaft nearer said support surface, control means operable after the box has advanced beyond the shaft in order to cause the axial movement of said shaft from a retracted position in which said rod is outside the path of advancement of the box to an extended position in which said rod is inserted into the path of advancement of the box, and guide means for transforming at least the last part of said axial movement of the shaft into a helical movement which enables said rod to rotate simultaneously about the axis of the shaft from a first position in which it is directed towards the inlet end of the support surface to a second position in which it is directed towards the exit end of the support surface, passing through a succession of intermediate positions in which said rod engages from below with the rear flap of the box and bends it over into the closure position.
Claim 3
Dependent Claim
113 words
Device as claimed in claim 1, comprising first means sensitive to the position of the box, which are operationally connected to said control means in such a manner as to cause these latter to operate for moving the shaft axially from said retracted position to said extended position when the box reaches a first advanced position beyond said shaft, and second means sensitive to the position of the box, which are operationally connected to said control means in such a manner as to cause these latter to operate for axially moving the shaft from said extended position to said retracted position when the box reaches a second position further advanced than the first.
Claim 4
Dependent Claim
46 words
Device as claimed in claim 2, in which said sensitive means consist of pneumatic valves and said control means consist of a pneumatic cylinder-piston unit, the cylinder of which is fed through said valves and the piston comprises a rod connected to the aforementioned horizontal shaft.
Claim 5
Dependent Claim
55 words
Device as claimed in claims 1, in which the outer surface of said horizontal shaft is provided with at least one helical groove and said guide means comprise a fixed guide cylinder which surrounds said horizontal shaft and at least one element projecting radially from said cylinder which is slidably engaged in said helical groove.
Claim 6
Dependent Claim
41 words
Device as claimed in claim 4, in which said outer surface of the horizontal shaft is provided with a flat portion situated between that end of the shaft to which said rod is fixed and the beginning of said helical groove.
Claim 7
Dependent Claim
68 words
Device as claimed in claim 1, in which said rod is divided into two mutually inclined portions which follow each other in the direction of advancement of the horizontal shaft from said retracted position to said extended position, the rear portion being coplanar with said horizontal shaft and the front portion being inclined so as to aid insertion of the rod below the rear flap of the box.
References Cited (Backward Citations)
US3354606A
Cited
US3775937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |