Patent US3826338A successfully refreshed from Google Patents.
US3826338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for feeding a lubricating oil or the like to the periphery of a rotating element
Assignee: Individual
•
Filing: 1973-02-21
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Granted: 1974-07-30
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Expires: 1993-02-21
Abstract
Abstract Apparatus for feeding lubricating oil to the surface of a rotating element, such as the thread of a reversible thread roller including a shaft fixed to the rotating element which has a cylindrical bore and at least one radial passage opening from the bore to said surface, an enlarged ring freely supported on the shaft, and means defining a friction surface against which the ring engages to transfer oil from the ring to the bore and thence through the passage as a result of centrifugal force. An oil sump is provided below the rotating element into which a portion of the ring projects at all times.
Inventors
- 👤 A Mair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:33
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/14; F16N7/16; F16N7/20; F16N7/22
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
169 words
A system for lubricating the outer surface of a rotatable element, comprising, in combination: a rotatable element, a shaft connected coaxially to the element and extending therefrom at one end for rotation therewith, a cylindrical bore in said one end of the element coaxial with and surrounding said shaft, an oil sump spaced below said element, a radial passage in said element opening from the bore to the outer surface of the element for transferring lubricating oil therethrough by centrifugal force, a ring supported on said shaft and having such a diameter as to constantly dip into lubricating oil in the sump, a stationary sleeve surrounding said shaft in spaced relation therefrom and extending into said bore, said sleeve having a circumaxial slot through which said ring freely extends with the slot presenting edges for scraping engagement with the ring to wipe lubricating oil therefrom and into the sleeve for transfer therealong and into said bore, and abutment means for preventing the ring from gliding out of the slot.
Claim 2
Independent Claim
169 words
A system for lubricating the outer surface of a rotatable element, comprising, in combination: a rotatable element, a shaft connected coaxially to the element and extending therefrom at one end for rotation therewith, a cylindrical bore in said one end of the element coaxial with and surrounding said shaft, an oil sump spaced below said element, a radial passage in said element opening from the bore to the outer surface of the element for transferring lubricating oil therethrough by centrifugal force, a ring supported on said shaft and having such a diameter as to constantly dip into lubricating oil in the sump, a stationary sleeve surrounding said shaft in spaced relation therefrom and extending into said bore, said sleeve having a circumaxial slot through which said ring freely extends with the slot presenting edges for scraping engagement with the ring to wipe lubricating oil therefrom and into the sleeve for transfer therealong and into said bore, and abutment means for preventing the ring from gliding out of the slot.
Claim 3
Dependent Claim
32 words
Apparatus as defined in claim 1, characterized in that said bore is spaced circumaxially from the sleeve whereby lubricating oil transferred therealong from the ring drips from the sleeve to the bore.
Claim 4
Dependent Claim
58 words
The invention defined by claim 1 characterized in that there is a shaft and coaxial bore as aforesaid for and at each end of the rotatable element with a ring and fixed sleeve for each such shaft, and a radial passage in the element at each end connecting each such bore with the outer surface of the element.
Claim 5
Dependent Claim
29 words
The invention defined in claim 1 characterized in that there are reversible threads in the outer surface of the rotatable element and said radial passage communicates with these threads.
Claim 6
Dependent Claim
25 words
Apparatus as defined in claim 1 characterized in that the width of said slot exceeds the axial dimension of the ring by approximately 1 millimeter.
Claim 7
Dependent Claim
22 words
Apparatus as defined in claim 1 characterized in that said stop is a transverse pin positioned beyond the circumference of the sleeve.
Claim 8
Dependent Claim
15 words
Apparatus as defined in claim 1, characterized in that said ring is made of metal.
Claim 9
Dependent Claim
16 words
Apparatus as defined in claim 1, characterized in that said ring is made of plastic material.
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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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |