Patent EP0139872A1 successfully refreshed from Google Patents.
US5330045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low backline pressure chain
Assignee: Credit Suisse AG
•
Filing: 1993-08-24
•
Granted: 1994-07-19
•
Expires: 2013-08-24
Abstract
Abstract A low backline pressure conveyor chain including spaced apart strands of chain interconnected by a plurality of rods each supporting a plurality of freely rotatably rollers.
Inventors
- 👤 Wasyly G. Hodlewsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:11
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/06; B65G17/08; B65G13/00; B65G13/11; B65G13/12; B65G17/063; B65G17/30; B65G17/38; B65G17/40; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
85 words
A low backline pressure chain, comprising: first and second parallel strands of chain, each strand of chain comprising a plurality of bushing links and pin links and hollow pins connecting said links together; a plurality of shafts, each shaft mounted at one end in one of said hollow pins in said first strand of chain and at the other end in the corresponding hollow pin in the second strand of chair; and a plurality of rollers loosely mounted for rotation on each of said shafts.
Claim 2
Dependent Claim
85 words
A low backline pressure chain, comprising: first and second parallel strands of chain, each strand of chain comprising a plurality of bushing links and pin links and hollow pins connecting said links together; a plurality of shafts, each shaft mounted at one end in one of said hollow pins in said first strand of chain and at the other end in the corresponding hollow pin in the second strand of chair; and a plurality of rollers loosely mounted for rotation on each of said shafts.
Claim 3
Dependent Claim
30 words
A low backline pressure chain as recited in claim 1, wherein said shafts are fixed in said hollow pins so as to avoid rotation of said shafts in said pins.
Claim 4
Dependent Claim
36 words
A low backline pressure chain as recited in claim 2, wherein the top edges of the chain strands are flush with the rollers, such that articles may move across the chain without catching on the rollers.
Claim 5
Dependent Claim
23 words
A low backline pressure chain as recited in claim 2, further comprising a third strand of chain for intermediate support of said shafts.
Claim 6
Dependent Claim
36 words
A low backline pressure chain as recited in claim 2 or 4, further comprising attachments mounted over said strands of chain, each attachment having a top which is flush with the top surface of said rollers.
Claim 7
Dependent Claim
41 words
A low backline pressure chain as recited in claim 2 or 4, wherein each pin link comprises an outer plate and an inner plate, and the outer plate includes a projection which is flush with the top surface of said rollers.
Claim 8
Dependent Claim
72 words
A low backline pressure chain comprising: a plurality of links arranged in spaced apart rows, each of said links including a top edge, a plurality of shafts, each of said shafts extending between said rows to interconnect said rows, and a plurality of rollers mounted for rotation on each of said shafts, each of said rollers being flush with the top edges of said links to form a continuous conveying support surface.
Claim 9
Dependent Claim
72 words
A low backline pressure chain comprising: a plurality of links arranged in spaced apart rows, each of said links including a top edge, a plurality of shafts, each of said shafts extending between said rows to interconnect said rows, and a plurality of rollers mounted for rotation on each of said shafts, each of said rollers being flush with the top edges of said links to form a continuous conveying support surface.
Claim 10
Dependent Claim
24 words
A low backline pressure chain as set forth in claim 7 wherein the links in each of said rows are interconnected by said shafts.
Claim 11
Dependent Claim
66 words
A low backline pressure chain as set forth in claim 7 wherein each of said links includes opposed plates, each of said plates having an aperture, and wherein each of said shafts has opposite end portions, each of said end portions being received in the apertures in the plates of a pair of said links in one of said rows to interconnect said pair of links.
Claim 12
Dependent Claim
32 words
A low backline pressure chain as set forth in claim 7 wherein each of said plates of each of said links includes a top edge portion which is flush with aid rollers.
Claim 13
Dependent Claim
35 words
A low backline pressure chain as set forth in claim 7 wherein said links are arranged in at least three spaced apart rows, the links in each of said rows being interconnected by said shafts.
Claim 14
Dependent Claim
22 words
A low backline pressure chain as set forth in claim 7 wherein said shafts are fixed against rotation relative to said links.
References Cited (Backward Citations)
DE1070097B
Cited
AU215638A
Cited
US2494302A
Cited
US2524186A
Cited
US2961087A
Cited
US2920734A
Cited
US2999604A
Cited
US2992717A
Cited
US2938614A
Cited
DE1149665B
Cited
US3119139A
Cited
US3285395A
Cited
US3520398A
Cited
US3512627A
Cited
US3513964A
Cited
US3621986A
Cited
US3776349A
Cited
US3628647A
Cited
US3605993A
Cited
US3701413A
Cited
US3669241A
Cited
US3669247A
Cited
US4436200A
Cited
US3770096A
Cited
US3804232A
Cited
US3894627A
Cited
US3944037A
Cited
US3842968A
Cited
US3944059A
Cited
US4202441A
Cited
US4271960A
Cited
JPS61243710A
Cited
US4765455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-07-18 | 1998-01-17 | 1998-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-18 | 2002-01-17 | 2002-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-18 | 2006-01-17 | 2006-07-19 | $7700.00 | Window Closed / Lapsed |