Patent US4305335A successfully refreshed from Google Patents.
US4305335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless conveyor for transporting roll containers
Assignee: Nederlanden Posterijen Telegrafie en Telefonie Staatsbedrif der
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Filing: 1979-05-15
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Granted: 1981-12-15
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Expires: 1999-05-15
Abstract
Abstract Endless conveyor for transporting roll containers of which two wheels are located on one fixed axis and the other wheels are swivelling. The supporting surface of the conveyor is at about the same height as the floor on which the containers can roll or be wheeled. In cross-section the supporting surface has the shape of a channel, in consequence of which the wheels on the fixed axis can be transversely fixed, so that their axes are placed lengthwise over the channel.
Inventors
- 👤 Jacobus P. E. H. Plugge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:22
CPC Classifications
B; B65; B65G; B65G19/00; B65G19/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
74 words
Endless conveyor for transporting wheeled containers on a floor, said containers having two wheels located on one fixed horizontal axis and at least one swivable wheel, the supporting surface of the conveyor being at about the same height as the floor on which the containers are supported, said conveyor supporting surface, having a concave channel shaped cross-section, so that both of said two wheels with one fixed horizontal axis are supported on said surface.
Claim 2
Dependent Claim
74 words
Endless conveyor for transporting wheeled containers on a floor, said containers having two wheels located on one fixed horizontal axis and at least one swivable wheel, the supporting surface of the conveyor being at about the same height as the floor on which the containers are supported, said conveyor supporting surface, having a concave channel shaped cross-section, so that both of said two wheels with one fixed horizontal axis are supported on said surface.
Claim 3
Dependent Claim
48 words
Endless conveyor, in accordance with claim 1, wherein the supporting surface of the conveyor is divided into segments which have a length smaller than the distance between said two wheels on the one fixed horizontal axis, and which segments are mounted on a swivably flexible linear driven means.
Claim 4
Dependent Claim
123 words
A conveyor for moving roll containers over a floor, said containers each having at least three spaced supporting wheels, two of which wheels are mounted on the same fixed horizontal axis and the other of which wheels are mounted to freely swivel about vertical axes, said conveyor comprising: an equally segmented concave channel movable along and countersunk in a slot in said floor, and a universally flexible linear means movable along said slot below said floor connected to said segments of said channel, whereby said two wheels mounted on the same horizontal axis of said container are transversely seatable in said channel on adjacent ones of said segments for moving said container over said floor along said slot as said linear means moves.
Claim 5
Dependent Claim
123 words
A conveyor for moving roll containers over a floor, said containers each having at least three spaced supporting wheels, two of which wheels are mounted on the same fixed horizontal axis and the other of which wheels are mounted to freely swivel about vertical axes, said conveyor comprising: an equally segmented concave channel movable along and countersunk in a slot in said floor, and a universally flexible linear means movable along said slot below said floor connected to said segments of said channel, whereby said two wheels mounted on the same horizontal axis of said container are transversely seatable in said channel on adjacent ones of said segments for moving said container over said floor along said slot as said linear means moves.
Claim 6
Dependent Claim
24 words
A conveyor according to claim 3 wherein said linear means comprises a cardan chain of links and said segments are connected to said links.
Claim 7
Dependent Claim
13 words
A conveyor according to claim 3 wherein said linear means comprises a cable.
Claim 8
Dependent Claim
28 words
A conveyor according to claim 3 wherein said linear means is guided by a pair of fixed channel rails along opposite sides of said slots below said floor.
Claim 9
Dependent Claim
25 words
A conveyor according to claim 6 wherein said linear means has roller means attached thereto at regularly spaced intervals rolling in said fixed channel rails.
Claim 10
Dependent Claim
15 words
A conveyor according to claim 3 wherein said linear means is endless and continuously moving.
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) | 1984-12-14 | 1985-06-15 | 1985-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-14 | 1989-06-15 | 1989-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-14 | 1993-06-15 | 1993-12-15 | $7700.00 | Window Closed / Lapsed |