US3744618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain conveyors
Assignee: Individual
•
Filing: 1971-05-26
•
Granted: 1973-07-10
•
Expires: 1991-05-26
Abstract
Abstract A chain conveyor comprises links connected for universal flexure and guided and supported by structure faced with lubricated porous material of undulating form. The links are chamfered so that a wedge of lubricant is formed between the crests of the undulations and the links.
Inventors
- 👤 M Monne
- 👤 M Eudier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:37
CPC Classifications
B; B65; B65G; B65G21/00; B65G21/20; B65G21/22; B65G45/00; B65G45/02; B65G45/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
108 words
A chain conveyor, which comprises: a plurality of interconnecting links, said links comprising first links of substantial length having chamfered leading and trailing edges, and second links, said first and second links being connected to form said interconnecting links; means for supporting loads from at least one of said links; and guide and support means for said links, comprising at least one support surface having a lubricated anti-friction face formed with undulations thereon spaced less than said length on which said links slide, said lubricated anti-friction face and said first links being operative, when said first links are in motion, to form a hydro-dynamic wedge of lubricant therebetween.
Claim 2
Dependent Claim
108 words
A chain conveyor, which comprises: a plurality of interconnecting links, said links comprising first links of substantial length having chamfered leading and trailing edges, and second links, said first and second links being connected to form said interconnecting links; means for supporting loads from at least one of said links; and guide and support means for said links, comprising at least one support surface having a lubricated anti-friction face formed with undulations thereon spaced less than said length on which said links slide, said lubricated anti-friction face and said first links being operative, when said first links are in motion, to form a hydro-dynamic wedge of lubricant therebetween.
Claim 3
Dependent Claim
44 words
A chain conveyor according to claim 1 wherein said first links further comprise two part-spherical recesses, one at each longitudinal end portion thereof, and whereIn said second links comprise two balls, one at each end thereof and engaged in corresponding recesses of adjacent links.
Claim 4
Dependent Claim
12 words
A chain conveyor according to claim 1, wherein said face is self-lubricating.
Claim 5
Dependent Claim
23 words
A chain conveyor according to claim 1, wherein said lubricated anti-friction face is mounted on vertical guide surfaces of said guide support means.
Claim 6
Dependent Claim
29 words
A chain conveyor according to claim 1, wherein said lubricated anti-friction face is mounted on a horizontal guide surface of said guide and support means lying above the chain.
Claim 7
Dependent Claim
30 words
A chain conveyor according to claim 1, wherein said anti-friction face is of porous material and wherein the conveyor further comprises means for supplying oil under pressure to said face.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |