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US3848366A
Expired / Lapsed
US
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Means to assure uniform flow of an abrasive solution
Assignee: Individual
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Filing: 1973-01-16
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Granted: 1974-11-19
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Expires: 1993-01-16
Abstract
Abstract A means of supplying an abrasive solution to a lapping machine having a rotating lapping plate, and which solution comprises a liquid having an abrasive in suspension. The solution is supplied under pressure to a tubular member having a rod freely rotatable therein, permitting the solution to flow axially along the rod and to be deposited upon the lapping plate. A plurality of arms extend normal to the axis of the rod and integral therewith are periodically engaged to rotate the rod and assure breaking up of any concentration of particles in the solution that would interfere with the uniform flow of the solution.
Inventors
- 👤 J David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:50
CPC Classifications
B; B24; B24B; B24B57/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
168 words
In a lapping machine having a lap plate rotatable about a first axis, and a work-confining ring member having an opening, and in contact with, and freely rotatable on said plate about a second axis radially positioned relative to said first axis, in combination, a means to apply an abrasive solution to the surface of said plate, comprising an upright tubular dispensing member having an axial bore and terminating upwardly in a solutionsupply member, said bore having fluid connection with said supply member, a rod freely rotatable in said bore and being of a diameter substantially less than the diameter of said bore and extending below said dispensing member, a plurality of radiallyextending circumferentially-spaced arms integral with said rod and lying in a plane below said dispensing member, normal thereto and above said ring, a means to index rotation of said rod comprising an upright index member integral with said ring, and successively engageable with each of said arms to rotate said rod upon rotation of said ring.
Claim 2
Dependent Claim
168 words
In a lapping machine having a lap plate rotatable about a first axis, and a work-confining ring member having an opening, and in contact with, and freely rotatable on said plate about a second axis radially positioned relative to said first axis, in combination, a means to apply an abrasive solution to the surface of said plate, comprising an upright tubular dispensing member having an axial bore and terminating upwardly in a solutionsupply member, said bore having fluid connection with said supply member, a rod freely rotatable in said bore and being of a diameter substantially less than the diameter of said bore and extending below said dispensing member, a plurality of radiallyextending circumferentially-spaced arms integral with said rod and lying in a plane below said dispensing member, normal thereto and above said ring, a means to index rotation of said rod comprising an upright index member integral with said ring, and successively engageable with each of said arms to rotate said rod upon rotation of said ring.
Claim 3
Dependent Claim
26 words
In a lapping machine as set forth in claim 1, in which means is provided to dampen the free rotation of said rod in said bore.
Claim 4
Dependent Claim
96 words
In a lapping machine as set forth in claim 1, in which said upright tubular dispensing member terminates downwardly in a seat normal to the axis of said member and surrounding said rod, a resilient ring member freely surrounding said rod and in engagement with said seat, a sleeve surrounding said upright dispensing member and having an upwardly-diverging conical seat in engagement with said resilient member, and means to adjust said sleeve axially relative to said tubular dispensing member to radially contract said resilient member to control the passage of said solution axially in said bore.
References Cited (Backward Citations)
US288809A
Cited
US3028711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |