US4754872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor chain link
Assignee: Individual
•
Filing: 1987-01-30
•
Granted: 1988-07-05
•
Expires: 2007-01-30
Abstract
Abstract A conveyor chain link with ribs on the load-bearing side has the ribs designed substantially parallel and extending in the direction of travel and comprising two connected parts being offset relative to each other by one rib width, and has the ribs designed with different overall lengths so that the outer ribs have the greatest overall length and decreasing length towards the center rib being the shortest. Some of the rib ends have an oblique cut by a vertical, plane cut at an angle of about 111/2°. The cut is greatest at the outer ribs and decreasing towards the center.
Inventors
- 👤 Poul E. Damkjaer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:23
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/30; B65G17/32; B65G17/34; B65G17/06; B65G17/08; B65G17/086; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
166 words
Conveyor chain link with ribs on a load-bearing side, upper edges of said ribs forming a bearing surface, the ribs are substantially parallel and extend in a direction of travel of the conveyor, each chain link comprises two mutually offset connected parts being mutually offset whereby the ribs of a following chain link may protrude partly into the spaces between the offset rib parts, and said chain link has linking parts and parts for guiding the chain link in slide rails, characterized in that an overall length of each rib is different so that the outermost ribs have the greatest overall length, and where the length decreases towards the center rib being the shortest rib, and that the rib ends forming a front edge of the chain link and extending from the center rib towards one of the outer ribs have decreasing thickness and the rib ends forming the diagonally opposite edge and extending from the center rib towards the outer rib have a decreasing thickness.
Claim 2
Dependent Claim
166 words
Conveyor chain link with ribs on a load-bearing side, upper edges of said ribs forming a bearing surface, the ribs are substantially parallel and extend in a direction of travel of the conveyor, each chain link comprises two mutually offset connected parts being mutually offset whereby the ribs of a following chain link may protrude partly into the spaces between the offset rib parts, and said chain link has linking parts and parts for guiding the chain link in slide rails, characterized in that an overall length of each rib is different so that the outermost ribs have the greatest overall length, and where the length decreases towards the center rib being the shortest rib, and that the rib ends forming a front edge of the chain link and extending from the center rib towards one of the outer ribs have decreasing thickness and the rib ends forming the diagonally opposite edge and extending from the center rib towards the outer rib have a decreasing thickness.
Claim 3
Dependent Claim
35 words
Conveyor chain link according to claim 1, characterised in that the distance between neighboring ribs is substantially twice the width of a rib, and the offset between the rib parts is substantially one rib width.
Claim 4
Dependent Claim
24 words
Conveyor chain link according to one of claims 1 or 2, characterised in that all of the ribs have substantially the same width (b).
Claim 5
Dependent Claim
31 words
Conveyor chain link according to one of claims 1 or 2, characterised in that the difference in length between neighboring ribs is in a range of 4-8% of the rib length.
Claim 6
Dependent Claim
54 words
Conveyor chain link according to one of claims 1 or 2, characterized in that a reduction of thickness of the rib ends is made on a side of the ribs facing the center rib by a vertical, plane cut at an angle of between 8°-°relative to a direction of travel of the conveyor chain.
Claim 7
Dependent Claim
14 words
Conveyor chain link according to claim 5, characterised in that the angle is 111/2°.
Claim 8
Dependent Claim
36 words
Conveyor chain link according to one of claims 1 or 2, characterized in that a top side of each of the rib ends is rounded so that the rib height is reduced towards the outer end.
Claim 9
Dependent Claim
33 words
Conveyor chain link according to one of claims 1 or 2, characterized in that the upper edge of each of the ribs is convex in a transverse direction in the entire rib length.
Claim 10
Dependent Claim
41 words
Conveyor chain link according to one of claims 1 or 2, characterized in that the entire chain link comprising ribs on a support part with linking parts and guide parts is pressure die-cast in one part as a solid plastic unit.
Claim 11
Dependent Claim
38 words
Conveyor chain link according to one of claims 1 or 2, characterized in that the chain link comprising a support part with linking parts and guide parts is pressure die-cast in one part as a solid plastic unit.
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) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |