US4153140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubrication technique and apparatus
Assignee: Paul Wurth SA
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Filing: 1977-07-25
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Granted: 1979-05-08
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Expires: 1997-07-25
Abstract
Abstract Lubrication for a rotary shaft positioned within the upper region of a blast furnace is accomplished by mounting a mechanically actuated pump for rotation with a reduction gear box through which the rotatable shaft is driven. The pump is periodically operated by means of an adjustable cam plate mounted on a sector gear which is affixed to the rotatable shaft; torque being transmitted to the shaft via the sector gear which is driven by a pinion coupled to the reduction gearing.
Inventors
- 👤 Rene N. Mahr
- 👤 Giovanni Cimenti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:04
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/18; C21B7/20; F; F16; F16N; F16N9/00; F16N9/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
136 words
Apparatus for providing lubrication to a rotatable shaft positioned within a blast furnace, the shaft to be lubricated having affixed thereto a steerable charge distribution chute, the rotatable shaft being movable with a transversely rotatable member and also having affixed thereto a drive gear whereby the chute will rotate with the member about a first axis and will rotate with the shaft about a second axis transverse to the first axis, said lubrication providing apparatus comprising: normally inoperative lubricating means mounted for movement with said rotatable member about said first axis; means affixed to the drive gear for operating said lubricating means when the distribution chute reaches a predetermined angular position; and means for delivering lubricant from said lubricating means to the surface of the shaft when said lubricating means is operated by said operating means.
Claim 2
Dependent Claim
136 words
Apparatus for providing lubrication to a rotatable shaft positioned within a blast furnace, the shaft to be lubricated having affixed thereto a steerable charge distribution chute, the rotatable shaft being movable with a transversely rotatable member and also having affixed thereto a drive gear whereby the chute will rotate with the member about a first axis and will rotate with the shaft about a second axis transverse to the first axis, said lubrication providing apparatus comprising: normally inoperative lubricating means mounted for movement with said rotatable member about said first axis; means affixed to the drive gear for operating said lubricating means when the distribution chute reaches a predetermined angular position; and means for delivering lubricant from said lubricating means to the surface of the shaft when said lubricating means is operated by said operating means.
Claim 3
Dependent Claim
18 words
The apparatus of claim 1 wherein said operating means comprises: a cam plate mounted on the drive gear.
Claim 4
Dependent Claim
31 words
The apparatus of claim 2 wherein said cam plate is adjustable on the drive gear to vary the angular position of the chute at which said lubricating means will be operated.
Claim 5
Dependent Claim
53 words
The apparatus of claim 1 wherein said lubricating means comprises: a mechanically operated pump, said pump including a piston movable in a cylinder; reservoir means for furnishing lubricant to said pump cylinder; and means for causing reciprocation of the piston of said pump, said reciprocation causing means being actuated by said operating means.
Claim 6
Dependent Claim
31 words
The apparatus of claim 4 wherein said lubricating means further comprises: means for delivering lubricant from said reservoir means to said pump cylinder when said pump is in the inoperative state.
Claim 7
Dependent Claim
53 words
The apparatus of claim 1 wherein said lubricating means comprises: a mechanically operated pump, said pump including a piston movable in a cylinder; reservoir means for furnishing lubricant to said pump cylinder; and means for causing reciprocation of the piston of said pump, said reciprocation causing means being actuated by said operating means.
Claim 8
Dependent Claim
31 words
The apparatus of claim 6 wherein said lubricating means further comprises: means for delivering lubricant from said reservoir means to said pump cylinder when said pump is in the inoperative state.
Claim 9
Dependent Claim
18 words
The apparatus of claim 5 wherein said operating means comprises: a cam plate mounted on the drive gear.
Claim 10
Dependent Claim
31 words
The apparatus of claim 8 wherein said cam plate is adjustable on the drive gear to vary the angular position of the chute at which said lubricating means will be operated.
Claim 11
Dependent Claim
81 words
The apparatus of claim 8 wherein said means for causing reciprocation comprises: pivot arm means, said pivot arm means being positioned for cooperation with said cam plate; means coupling said pivot arm means to said pump piston whereby said cam plate will cause movement of said piston in a first direction; and resilient biasing means for moving said pivot arm in a direction opposite to said first direction upon discontinuance of contact between said pivot arm means and said cam plate.
Claim 12
Dependent Claim
31 words
The apparatus of claim 10 wherein said cam plate is adjustable on the drive gear to vary the angular position of the chute at which said lubricating means will be operated.
Claim 13
Dependent Claim
31 words
The apparatus of claim 11 wherein said lubricating means further comprises: means for delivering lubricant from said reservoir means to said pump cylinder when said pump is in the inoperative state.
References Cited (Backward Citations)
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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) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |