US4635783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Person-conveying device
Assignee: O&K ORENSTEIN & KOPPEL AKTIENGESELLSCHAFT A CORP OF GERMANY
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Filing: 1985-03-20
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Granted: 1987-01-13
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Expires: 2005-03-20
Abstract
Abstract Person-conveying device of quiet operating design having a step-belt or pallet belt which is guided in guide rails by transport chains with step-chain or pallet-chain rollers as well as chain-guide rollers, the points of contact of the step-chain or pallet-chain rollers with the travel surface being spaced from the lateral guide surface of the guide rail.
Inventors
- 👤 Peter Hofling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:47
CPC Classifications
B; B66; B66B; B66B23/00; B66B23/14; B66B23/145; B65; B65G; B65G39/00; B65G39/10; B65G39/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
139 words
In a person-conveying device of quiet operating design having a belt comprising tread plates, each tread plate being guided, via a respective driver pin, on a guide rail having a planar travel surface and a lateral guide surface, by transport chains comprising rollers between plates of the transport chains, the improvement wherein said rollers contact said travel surface, said rollers comprise load supporting chain rollers and chain-guide rollers, each of said load supporting chain rollers is mounted on a respective said driver pin, each of said load supporting chain rollers has a smaller width in the region of said travel surface than said chain-guide rollers whereby a side surface of said load supporting chain rollers is spaced by a distance from said lateral guide surface of the guide rail, and said chain-guide rollers laterally contact said lateral guide surface.
Claim 2
Dependent Claim
139 words
In a person-conveying device of quiet operating design having a belt comprising tread plates, each tread plate being guided, via a respective driver pin, on a guide rail having a planar travel surface and a lateral guide surface, by transport chains comprising rollers between plates of the transport chains, the improvement wherein said rollers contact said travel surface, said rollers comprise load supporting chain rollers and chain-guide rollers, each of said load supporting chain rollers is mounted on a respective said driver pin, each of said load supporting chain rollers has a smaller width in the region of said travel surface than said chain-guide rollers whereby a side surface of said load supporting chain rollers is spaced by a distance from said lateral guide surface of the guide rail, and said chain-guide rollers laterally contact said lateral guide surface.
Claim 3
Dependent Claim
36 words
The device according to claim 1, wherein said load supporting chain rollers comprise a central shoulder and have a smaller width in the region of said travel surface than in the region of said central shoulder.
Claim 4
Dependent Claim
52 words
The device according to claim 2, wherein said loading supporting chain rollers on at least one side thereof are laterally offset between said central shoulder region and the region of said travel surface defining said smaller width in the region of said travel surface than in the region of said central shoulder.
Claim 5
Dependent Claim
13 words
The device according to claim 1, wherein said belt is a step belt.
Claim 6
Dependent Claim
13 words
The device according to claim 1, wherein said belt is a pallet belt.
Claim 7
Dependent Claim
32 words
The device according to claim 1, wherein said load supporting chain rollers are made of plastic material and include ball bearings mounted on said driver pin and directly contact said plastic material.
Claim 8
Dependent Claim
20 words
The device according to claim 1, wherein said chain-guide rollers have a smaller diameter than that of said chain rollers.
Claim 9
Dependent Claim
31 words
The device according to claim 1, wherein said side surface of said load supporting chain rollers are spaced on the same side from said lateral guide surface of said guide rail.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-12 | 1990-07-14 | 1991-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-12 | 1994-07-14 | 1995-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-12 | 1998-07-14 | 1999-01-13 | $7700.00 | Window Closed / Lapsed |