US3823599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test apparatus for the evaluation of rolling lubricants
Assignee: United States Steel Corp
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Filing: 1972-12-08
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Granted: 1974-07-16
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Expires: 1992-12-08
Abstract
Abstract A test apparatus for the evaluation of the lubricity of rolling oils and the interaction of such oils with a variety of metal alloys employed in the construction of rolls. The axis of a driven work roll is placed on a radial line of a disc. The lubricant under test is applied to the region of frictional contact between the roll and the disc. The resultant speed of the disc is controlled by applying a torque to the disc. With a roll of given length, and a known load applied by the roll to the disc, the coefficient of friction is determined by measuring the torque on the disc. This coefficient can thus be evaluated for various degrees of slipping velocity of a roll.
Inventors
- 👤 D Litz
- 👤 Brien F O
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:08
CPC Classifications
G; G01; G01N; G01N19/00; G01N19/02; G01N33/00; G01N33/26; G01N33/28; G01N33/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
150 words
Apparatus for the evaluation of rolling lubricants which comprises, table means with a planar surface, said means being adapted for rotation about a first axis perpendicular to said planar surface, and means associated therewith for measuring the torque and rotational speed of said table means, cylindrical roll means of length (1), and means associated therewith for supporting said roll means in a position whereby a linear region of the surface of said roll means is maintained in frictional contact with said planar surface so that the axis of said roll means orthogonally intersects said first axis, while the mid-length ( 1/2 ) of said roll means is not coincident with said first axis, means for exerting a desired load between said roll means and said table means, means for effecting the rotation of said roll means, and means for applying the lubricant under evaluation to said region of frictional contact.
Claim 2
Dependent Claim
150 words
Apparatus for the evaluation of rolling lubricants which comprises, table means with a planar surface, said means being adapted for rotation about a first axis perpendicular to said planar surface, and means associated therewith for measuring the torque and rotational speed of said table means, cylindrical roll means of length (1), and means associated therewith for supporting said roll means in a position whereby a linear region of the surface of said roll means is maintained in frictional contact with said planar surface so that the axis of said roll means orthogonally intersects said first axis, while the mid-length ( 1/2 ) of said roll means is not coincident with said first axis, means for exerting a desired load between said roll means and said table means, means for effecting the rotation of said roll means, and means for applying the lubricant under evaluation to said region of frictional contact.
Claim 3
Dependent Claim
31 words
The apparatus of claim 1, wherein said means for exerting a desired load include a back-up roll and support yolk and said table means is in the form of a disc.
Claim 4
Dependent Claim
32 words
The apparatus of claim 2, wherein the contours of said roll means and said planar surface are slightly mismatched so as to vary the pressure therebetween along the line of frictional contact.
Claim 5
Dependent Claim
40 words
The apparatus of claim 3, wherein said roll means is substantially ellipsoidal, so that the roll diameter at the point of intersection with said first axis is greater than the diameter at the ends thereof, to achieve said contour mismatch.
References Cited (Backward Citations)
US3724259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |