Patent US3892306A successfully refreshed from Google Patents.
US3892306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor lubrication line connection arrangement
Assignee: Allis Chalmers Corp
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Filing: 1972-03-30
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Granted: 1975-07-01
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Expires: 1992-03-30
Abstract
Abstract In a roller conveyor system incorporating means to insure lubrication of all bearings, a flexible tube connection between the hollow roller idler shafts is provided. To insure the ability to lubricate the bearings under relatively high pressures, the flexible tube is connected with the shafts by using a compression fitting having a shear portion which becomes crimped or compressed onto the flexible tube during installation of the connection between roller idler shafts.
Inventors
- 👤 Francois X Bertaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:38
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02; B65G39/09
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
In an idler assembly for belt conveyors and the like having at least a pair of idlers in side-by-side relationship, each idler being rotabably mounted on a hollow shaft by spaced bearing assemblies and having means communicating each bearing assembly with the interior of the shaft, each bearing assembly being lubricated by forcing lubricant through the shafts and through the communicating means into the bearing assemblies, the adjacent idler shafts being joined together, the improvement comprising: a unitary flexible tube joining the shafts together, a fitting engaging each end of the flexible tube and threadably received in the end of the hollow shaft, a seat at each end of the hollow shaft, each fitting having a portion which during assembly of the shaft and the flexible tube is crimped into sealing engagement with the flexible tube by being forced against the seat.
Claim 2
Dependent Claim
142 words
In an idler assembly for belt conveyors and the like having at least a pair of idlers in side-by-side relationship, each idler being rotabably mounted on a hollow shaft by spaced bearing assemblies and having means communicating each bearing assembly with the interior of the shaft, each bearing assembly being lubricated by forcing lubricant through the shafts and through the communicating means into the bearing assemblies, the adjacent idler shafts being joined together, the improvement comprising: a unitary flexible tube joining the shafts together, a fitting engaging each end of the flexible tube and threadably received in the end of the hollow shaft, a seat at each end of the hollow shaft, each fitting having a portion which during assembly of the shaft and the flexible tube is crimped into sealing engagement with the flexible tube by being forced against the seat.
Claim 3
Dependent Claim
41 words
An idler assembly as recited in claim 1 wherein each fitting has a shear section which becomes detached during assembly of the idlers, said shear section being the portion of the fitting which is crimped into sealing engagement with flexible tube.
Claim 4
Dependent Claim
122 words
In an idler assembly for belt conveyors and the like having at least a pair of idlers in side-by-side relationship, each idler being rotably mounted on a hollow shaft by spaced bearing means and having means communicating each bearing means with the interior of the shaft, each bearing means being lubricated by forcing lubricant through the shafts and through the communicating means into the bearing means, the adjacent idler shafts being joined together, the improvement comprising: a unitary flexible tube between the shafts, a compression fitting on each end portion of the flexible tube and connected to the adjacent shaft, said fitting having a portion crimped onto the flexible tube and in abutting sealing engagement with a portion of the hollow spindle.
Claim 5
Dependent Claim
122 words
In an idler assembly for belt conveyors and the like having at least a pair of idlers in side-by-side relationship, each idler being rotably mounted on a hollow shaft by spaced bearing means and having means communicating each bearing means with the interior of the shaft, each bearing means being lubricated by forcing lubricant through the shafts and through the communicating means into the bearing means, the adjacent idler shafts being joined together, the improvement comprising: a unitary flexible tube between the shafts, a compression fitting on each end portion of the flexible tube and connected to the adjacent shaft, said fitting having a portion crimped onto the flexible tube and in abutting sealing engagement with a portion of the hollow spindle.
Claim 6
Dependent Claim
30 words
An idler assembly as recited in claim 3 in which each said fitting is threadably received in the hollow shaft and said crimped portion abuts a seat in said shaft.
Claim 7
Dependent Claim
21 words
An idler assembly as recited in claim 4 wherein each said crimped portions are sheared from the remainder of the fittings.
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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |