Patent US5031757A successfully refreshed from Google Patents.
US5031757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular link conveyor system with narrow chain
Assignee: Span Tech LLC
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Filing: 1989-12-26
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Granted: 1991-07-16
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Expires: 2009-12-26
Abstract
Abstract A conveyor system utilizing a plurality of modular links mounted by a plurality of transverse cross rods that retain the links together, forming the conveyor belt. The modular links include a plurality of apex portions, a plurality of leg portions extending therefrom and a plurality of foot portions. The apex portions include an elongated slot receiving the cross rod to allow longitudinal freedom of movement to the conveyor belt. The modular links further include side link portions that are adapted to engage conveyor guide rails integral with a support frame. Each side link portion is formed by including a depending arm having a transversely extending tab. A locking tab including resilient prongs is placed within a corresponding slot in each side link to retain the cross rod. Side rails attached to side rail brackets are provided adjacent the peripheral edges of the conveyor belt to maintain the transported product on the conveyor belt. The side rail brackets include a horizontally extending leg passing through a cross bar that supports the attached guide rails. The bore of the cross bar has grooved side surfaces to mate with ridged surfaces included on the horizontal leg of the side rail bracket. Support brackets provided at strategic positions assist in supporting the weight of the entire conveyor system. The combination of the shape of the modular links and the longitudinal freedom of movement of the conveyor allows substantially unrestricted motion through curves and bends.
Inventors
- 👤 Jorgen Draebel
- 👤 James L. Layne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:58
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/06; B65G17/08; B65G17/086; B65G21/00; B65G21/20; B65G21/22; B65G2201/00; B65G2201/02; B65G2207/00; B65G2207/12
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
133 words
A modular link conveyor system, including a belt mounted on conveyor guide means, comprising: a plurality of integral modular links, each link including a plurality of apex portions and a plurality of leg portions extending therefrom, said apex portions further including a slot passing transversely therethrough, said leg portions further terminating in foot portions, each said foot portion including a hole passing transversely therethrough; a plurality of transverse connecting means, said connecting means passing through said slots and said holes to engage said integral modular links together and form a conveyor belt; said integral modular links including side portions formed by the inclusion of a depending arm to said integral modular links for engaging said conveyor guide means, and each said side portion further including integral locking means for engaging said connecting means.
Claim 2
Dependent Claim
133 words
A modular link conveyor system, including a belt mounted on conveyor guide means, comprising: a plurality of integral modular links, each link including a plurality of apex portions and a plurality of leg portions extending therefrom, said apex portions further including a slot passing transversely therethrough, said leg portions further terminating in foot portions, each said foot portion including a hole passing transversely therethrough; a plurality of transverse connecting means, said connecting means passing through said slots and said holes to engage said integral modular links together and form a conveyor belt; said integral modular links including side portions formed by the inclusion of a depending arm to said integral modular links for engaging said conveyor guide means, and each said side portion further including integral locking means for engaging said connecting means.
Claim 3
Dependent Claim
16 words
The conveyor system of claim 1 wherein said depending arm includes an inwardly extending transverse tab.
Claim 4
Dependent Claim
17 words
The conveyor system of claim 1 wherein said conveyor guide means includes a pair of guide rails.
Claim 5
Dependent Claim
39 words
The conveyor system of claim 3 wherein said guide rails include an upper and lower lip for guiding said conveyor belt, said lower lip slidingly engaging said transverse tab on said side links to provide an integral belt return.
Claim 6
Dependent Claim
34 words
The conveyor system of claim 4 wherein said guide rails further include conveyor wear strip means for relatively low friction sliding engagement with said conveyor belt, said wear strip means including wear indicating means.
Claim 7
Dependent Claim
25 words
The conveyor system of claim 1 wherein said locking means includes a locking tab, and a slot within said side portions for receiving said tab.
Claim 8
Dependent Claim
30 words
The conveyor system of claim 6 wherein said locking tab is positioned inside of said side link portion so as not to protrude outside the periphery of said conveyor belt.
Claim 9
Dependent Claim
31 words
The conveyor system of claim 7 wherein said locking tab further includes an offset release button for cooperating with an unlocking tool to assist in the removal of said locking tab.
Claim 10
Dependent Claim
19 words
The conveyor system of claim 1 wherein said conveyor system includes support brackets attached to said conveyor guide means.
Claim 11
Dependent Claim
20 words
The conveyor system of claim 9 wherein said support brackets include an aperture forming an arc for receiving attachment means.
Claim 12
Dependent Claim
20 words
The conveyor system of claim 10 wherein said support brackets further include a slot for receiving a fluid connecting tray.
Claim 13
Dependent Claim
19 words
The conveyor system of claim 1 wherein is further provided product retaining means including a plurality of side rails.
Claim 14
Dependent Claim
40 words
The conveyor system of claim 12 Wherein said product retaining means further includes a plurality of laterally adjustable brackets, each of said brackets having a vertically projecting leg and a horizontally projecting leg so as to be substantially "L" shaped.
Claim 15
Dependent Claim
27 words
The conveyor system of claim 13 wherein said vertically projecting legs include a slot, said slot receiving attaching means for one or more of said side rails.
Claim 16
Dependent Claim
64 words
The conveyor system of claim 14 wherein said side rail attaching means includes a side rail engaging member positioned on a face of said vertical projecting leg of said bracket facing said conveyor belt and a lock plate positioned on a face of said vertically projecting leg facing away from said conveyor belt, said side rail engaging member and said lock plate cooperatively connected.
Claim 17
Dependent Claim
26 words
The conveyor system of claim 13 wherein sad horizontally projecting leg includes a substantially flat inner face and an outer face including a plurality of ridges.
Claim 18
Dependent Claim
26 words
The conveyor system of claim 16 wherein is provided a plurality of longitudinally aligned cross bars placed underneath said conveyor belt for receiving said horizontal legs.
Claim 19
Dependent Claim
24 words
The conveyor system of claim 17 wherein said horizontal leg is received in an open bore of said cross bar aligned between said brackets.
Claim 20
Dependent Claim
40 words
The conveyor system of claim 18 wherein said bore includes grooved side surfaces to cooperatively receive ridged faces of said horizontally projecting legs so as to maintain tight frictional support for said product retaining means while allowing for lateral adjustment.
Claim 21
Dependent Claim
28 words
The conveyor system of claim 1 wherein is provided drive means including at least one sprocket for engaging said modular links and a means for driving said sprocket.
Claim 22
Dependent Claim
127 words
An endless conveyor belt, comprising: a plurality of integral modular links, each of said links including a plurality of apex portions and a plurality of leg portions extending therefrom, said apex portions further including a slot passing transversely therethrough, said leg portions further terminating in foot portions, each said foot portion including a hole passing transversely therethrough; a plurality of transverse connecting means for engaging said integral modular links by passing through said slots and said holes and holding said links together so as to form an endless conveyor belt; and said integral modular links including a plurality of side portions, said side portions including a depending arm for guiding each said side portion, said side portions further including integral locking means for engaging said connecting means.
Claim 23
Dependent Claim
127 words
An endless conveyor belt, comprising: a plurality of integral modular links, each of said links including a plurality of apex portions and a plurality of leg portions extending therefrom, said apex portions further including a slot passing transversely therethrough, said leg portions further terminating in foot portions, each said foot portion including a hole passing transversely therethrough; a plurality of transverse connecting means for engaging said integral modular links by passing through said slots and said holes and holding said links together so as to form an endless conveyor belt; and said integral modular links including a plurality of side portions, said side portions including a depending arm for guiding each said side portion, said side portions further including integral locking means for engaging said connecting means.
Claim 24
Dependent Claim
22 words
The conveyor belt of claim 21 wherein said locking means includes a locking tab received with a corresponding slot in side links.
Claim 25
Dependent Claim
31 words
The conveyor belt of claim 22 wherein said locking tab is positioned inside of said side link portion so as not to protrude outside of the periphery of said conveyor belt.
Claim 26
Dependent Claim
31 words
The conveyor belt of claim 23 wherein said locking tab further includes an offset release button for cooperating with an unlocking tool to assist in the removal of said locking tab.
Claim 27
Dependent Claim
20 words
The conveyor belt of claim 21 wherein said depending arm of said side portions further includes a transversely extending tab.
Claim 28
Dependent Claim
37 words
The conveyor belt of claim 21 wherein the said apex and foot portions include relatively slanted side surfaces to allow cooperating engagement with the leg portions of an adjacent link so as to facilitate travel around bends.
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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) | 1994-07-15 | 1995-01-14 | 1995-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-15 | 1999-01-14 | 1999-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-15 | 2003-01-14 | 2003-07-16 | $7700.00 | Window Closed / Lapsed |