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US4061332A
Expired / Lapsed
US
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Roller conveyor
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1976-06-23
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Granted: 1977-12-06
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Expires: 1996-06-23
Abstract
Abstract A conveyor apparatus has at least one power-driven roller arrangement for a positive engagement and feed of an item in the conveying direction, and an incremental feed device situated downstream of the roller arrangement as viewed in the conveying direction. The incremental feed device includes an incremental feed roller spaced from the roller arrangement; an energy storing device connected to the incremental feed roller; and a mechanism for urging the item against the incremental feed roller for rotating the incremental feed roller by the item advanced by the roller arrangement to arm the energy storing device and for further advancing the item by the incremental feed roller during energy release by the energy storing device.
Inventors
- 👤 Karl Heinz Baumgartel
- 👤 Dieter Altenburg
- 👤 Siegfried Hase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:51
CPC Classifications
B; B65; B65H; B65H5/00; B65H5/06; B65H5/062; B65H2403/00; B65H2403/20; B65H2403/21
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
184 words
In a conveyor apparatus having at least one power-driven roller arrangement for a positive engagement and feed of an item in the conveying direction, the improvement comprising an incremental feed device situated downstream of said roller arrangement as viewed in the conveying direction, said incremental feed device including a. an incremental feed roller spaced from said roller arrangement, each item being advanced into the zone of said incremental feed roller by said roller arrangement; b. means for urging the item into frictional contact with the periphery of said incremental feed roller for rotating said incremental feed roller from a first position to a second position by said roller arrangement with the intermediary of the item being advanced; and c. an energy storing means connected to said incremental feed roller for being armed by said incremental feed roller during its rotation from said first position to said second position and for rotating said incremental feed roller from said second position towards said first position codirectionally with the rotation from the first position to the second position to further advance the item in said conveying direction.
Claim 2
Dependent Claim
184 words
In a conveyor apparatus having at least one power-driven roller arrangement for a positive engagement and feed of an item in the conveying direction, the improvement comprising an incremental feed device situated downstream of said roller arrangement as viewed in the conveying direction, said incremental feed device including a. an incremental feed roller spaced from said roller arrangement, each item being advanced into the zone of said incremental feed roller by said roller arrangement; b. means for urging the item into frictional contact with the periphery of said incremental feed roller for rotating said incremental feed roller from a first position to a second position by said roller arrangement with the intermediary of the item being advanced; and c. an energy storing means connected to said incremental feed roller for being armed by said incremental feed roller during its rotation from said first position to said second position and for rotating said incremental feed roller from said second position towards said first position codirectionally with the rotation from the first position to the second position to further advance the item in said conveying direction.
Claim 3
Dependent Claim
34 words
A conveyor apparatus as defined in claim 1, wherein said means for urging the item into frictional contact with said incremental feed roller comprises a pressure roller resiliently urged against said incremental feed roller.
Claim 4
Dependent Claim
82 words
A conveyor apparatus as defined in claim 1, wherein said energy storing device comprises an over-the-center spring arrangement including a tension spring attached to said incremental feed roller for being armed thereby upon its rotation from a position of rest to a dead center position and for rotating said incremental feed roller by said tension spring in the same direction to said position of rest; said position of rest being said first position and said dead center position being said second position.
Claim 5
Dependent Claim
25 words
A conveyor apparatus as defined in claim 3, wherein the angle of rotation from said position of rest to said dead center is substantially 180°.
Claim 6
Dependent Claim
65 words
A conveyor apparatus as defined in claim 4, further comprising means for floatingly supporting said incremental feed roller on one side thereof; a pin affixed to the other, opposite side of said incremental feed roller at a distance from the rotary axis thereof, said pin supporting a first end of said tension spring; and means for stationarily attaching a second end of said tension spring.
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) | 1980-12-05 | 1981-06-06 | 1981-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-05 | 1985-06-06 | 1985-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-05 | 1989-06-06 | 1989-12-06 | $7700.00 | Window Closed / Lapsed |