US3646752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic encased metal ribbed flexible conveyor chain
Assignee: XLO Inc A CORP OF
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Filing: 1970-09-28
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Granted: 1972-03-07
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Expires: 1990-09-28
Abstract
Abstract An improved flexible conveyor chain with side flexing capability while retaining good cross-sectional areas at stress positions. The chain structure is made of metal rib sections encased in plastic material which provides positive positioning and even cooling effects during manufacturing and strength in useage. The plastic material reduces or eliminates the need for chain lubrication. The edges of the chain elements have ramp edges to assist in ease of loading and unloading material to be moved by the conveyor chain.
Inventors
- 👤 David H Kampfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:05
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/30; B65G17/38; B65G17/385; F; F16; F16G; F16G13/00; F16G13/12; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
206 words
A plastic encased metal ribbed flexible conveyor chain comprising, in combination: a. at least one outer chain assembly; b. said outer chain assembly having two side bar members; c. a pin hole near each end of said side bar member; d. a metal rib running the length of said Side bar member; e. a pair of pin members; f. securing means to position said pin members in said pin holes to align said side bar members; g. at least two center bar assemblies; h. an elongated hole in each end of said center bar assembly; i. a metal rib running the length of said center bar assembly; j. said center bar assemblies having tapered ends; k. said side bar members having an outer surface and an inside surface; l. said side bar members having load sections substantially at said pin holes; m. an outer tapered surface as part of said inside surface and extending from the pin hole to the end of said side bar member in the direction of the outside surface; and n. an inner tapered surface as part of said inside surface and extending from the pin hole to the middle of said side bar member in the direction of the outside surface.
Claim 2
Dependent Claim
206 words
A plastic encased metal ribbed flexible conveyor chain comprising, in combination: a. at least one outer chain assembly; b. said outer chain assembly having two side bar members; c. a pin hole near each end of said side bar member; d. a metal rib running the length of said Side bar member; e. a pair of pin members; f. securing means to position said pin members in said pin holes to align said side bar members; g. at least two center bar assemblies; h. an elongated hole in each end of said center bar assembly; i. a metal rib running the length of said center bar assembly; j. said center bar assemblies having tapered ends; k. said side bar members having an outer surface and an inside surface; l. said side bar members having load sections substantially at said pin holes; m. an outer tapered surface as part of said inside surface and extending from the pin hole to the end of said side bar member in the direction of the outside surface; and n. an inner tapered surface as part of said inside surface and extending from the pin hole to the middle of said side bar member in the direction of the outside surface.
Claim 3
Dependent Claim
35 words
A conveyor chain as claimed in claim 1, including: a. a circumferential surface around the outside of said side bar members; and b. a first ramp edge connecting said outer surface and said circumferential surface.
Claim 4
Dependent Claim
48 words
A conveyor chain as claimed in claim 2, including: a. an outer surface extending around said center bar assembly; b. side surfaces as part of said center bar assembly; and c. a second ramp edge connecting said outer surface and said side surfaces of said center bar assembly.
Claim 5
Dependent Claim
103 words
A conveyor chain as claimed in claim 1, including: a. said pin holes include a knurl hole and a pin body hole; b. said pin member includes two knurl ends and a body surface; c. shoulders connecting said knurl ends and said body surface; d. a shoulder surface connecting said pin body hole and said knurl hole; e. said knurl end acting in said knurl hole as part of said securing means; f. said body surface acting in said pin body hole; and g. said shoulder acting on said shoulder surface to assist in placing said side bar members a predetermined space apart.
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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |