Patent US2697887A successfully refreshed from Google Patents.
Patent US3693777A successfully refreshed from Google Patents.
US3693777A
Expired / Lapsed
US
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Apparatus for laying down articles on a conveyor
Assignee: Sidel SA
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Filing: 1971-06-07
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Granted: 1972-09-26
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Expires: 1991-06-07
Abstract
Abstract This apparatus for depositing separately on a conveyor a plurality of articles having a predetermined and same height and a greater diameter at the top than at the base, comprises a descending conduit in which the articles are stacked; this conduit has a lateral aperture through which projects only the thread portion of a screw revolving about an axis parallel to the conduit, the pitch of said screw increasing in the downward direction from a value inferior to the predetermined height of said articles to a value greater than said height.
Inventors
- 👤 Marcel Beauchemin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:18
CPC Classifications
B; B65; B65G; B65G59/00; B65G59/06; B65G59/061; B65G59/066; B65B; B65B35/00; B65B35/10; B65B35/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
147 words
An apparatus for laying down separately on a conveyor a series of articles of predetermined height, having a greater diameter at the top than at the base, which comprises a descending conduit for guiding a plurality of stacked articles towards said conveyor, said conduit comprising a lateral aperture extending along one side thereof, a screw mounted externally of said conduit and adapted to revolve about an axis parallel to said conduit, said screw having a thread projecting through said lateral aperture, the pitch of said screw thread increasing in the downward direction from a value inferior to the predetermined height of said articles to a value greater than said height, whereby the screw thread is adapted, during the screw rotation, to separate the lower article of the pile from the other articles guided in said conduit, and to eventually lay down said articles separately on said conveyor.
Claim 2
Independent Claim
147 words
An apparatus for laying down separately on a conveyor a series of articles of predetermined height, having a greater diameter at the top than at the base, which comprises a descending conduit for guiding a plurality of stacked articles towards said conveyor, said conduit comprising a lateral aperture extending along one side thereof, a screw mounted externally of said conduit and adapted to revolve about an axis parallel to said conduit, said screw having a thread projecting through said lateral aperture, the pitch of said screw thread increasing in the downward direction from a value inferior to the predetermined height of said articles to a value greater than said height, whereby the screw thread is adapted, during the screw rotation, to separate the lower article of the pile from the other articles guided in said conduit, and to eventually lay down said articles separately on said conveyor.
Claim 3
Dependent Claim
37 words
An apparatus as set forth in claim 1, wherein said screw thread comprises only an upper turn of a pitch inferior to the predetermined article height, and a lower turn having a pitch greater than said height.
Claim 4
Dependent Claim
31 words
An apparatus as set forth in claim 1, wherein said screw is driven from a motor at a speed proportional to that of said conveyor according to the desired delivery rate.
References Cited (Backward Citations)
US2854125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |