US4190986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax treated grindstone
Assignee: Daichiku Co Ltd
•
Filing: 1978-05-12
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Granted: 1980-03-04
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Expires: 1998-05-12
Abstract
Abstract The grinding efficiency, performance and quality of the object ground can be increased by employing a grinder which has a grindstone treated with a wax which is impregnated into the grindstone by use of a heated solution of a higher aliphatic acid and higher alcohol group.
Inventors
- 👤 Oide Kunimasa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:28
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/34; B24D3/348
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
63 words
In a grinder, an improvement comprising: a grindstone impregnated with a solution containing a higher aliphatic acid having 5 to 30 carbon atoms per molecule and a higher alcohol having 5 to 30 carbon atoms per molecule mixed together at a range of ratios by weight of 10:90 to 90:10; whereby grinding efficiency and quality of grinding performance is dramatically and surprisingly improved.
Claim 2
Dependent Claim
63 words
In a grinder, an improvement comprising: a grindstone impregnated with a solution containing a higher aliphatic acid having 5 to 30 carbon atoms per molecule and a higher alcohol having 5 to 30 carbon atoms per molecule mixed together at a range of ratios by weight of 10:90 to 90:10; whereby grinding efficiency and quality of grinding performance is dramatically and surprisingly improved.
Claim 3
Dependent Claim
12 words
The improvement of claim 1 wherein said grindstone is a resinous grindstone.
Claim 4
Dependent Claim
12 words
The improvement of claim 1 wherein said grindstone is also wax treated.
Claim 5
Dependent Claim
26 words
The improvement of claim 1 wherein said solution is composed of said higher aliphatic acid to said higher alcohol in a ratio of approximately 1:1 molar.
Claim 6
Dependent Claim
44 words
The improvement of claim 1 wherein said solution is comprised of a mixture of equal amounts of stearic acid and isostearic acid mixed in an approximately equal molar ratio with a mixture of cetyl and isostearyl alcohol mixed in a 6:4 molar ratio respectively.
Claim 7
Dependent Claim
29 words
The improvement of claim 1 wherein said solution is comprised of a mixture of stearic acid, cetyl alcohol and stearyl alcohol in a molar ratio of approximately 5:3:2 respectively.
Claim 8
Dependent Claim
27 words
The improvement of claim 1 wherein said solution is comprised of a mixture of lauric acid and stearyl alcohol in a molar ratio of approximately 6:4 respectively.
Claim 9
Dependent Claim
70 words
A grinding wheel comprising a grindstone impregnated with a solution comprising a higher aliphatic acid having 5 to 30 carbon atoms per molecule and a higher alcohol having 5 to 30 atoms per molecule mixed together at a range of ratios by weight of 10:90 to 90:10 by heating the solution, immersing the grinding stone in the solution, draining the excess solution from the grindstone and allowing grindstone to dry.
Claim 10
Dependent Claim
70 words
A grinding wheel comprising a grindstone impregnated with a solution comprising a higher aliphatic acid having 5 to 30 carbon atoms per molecule and a higher alcohol having 5 to 30 atoms per molecule mixed together at a range of ratios by weight of 10:90 to 90:10 by heating the solution, immersing the grinding stone in the solution, draining the excess solution from the grindstone and allowing grindstone to dry.
Claim 11
Dependent Claim
36 words
A grinding wheel according to claim 8 wherein said solution is heated to a temperature between 100° and 120° C. and the grindstone is dried in a dryer at a temperature between 100° and 150° C.
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) | 1983-03-04 | 1983-09-03 | 1984-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-04 | 1987-09-03 | 1988-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-04 | 1991-09-03 | 1992-03-04 | $7700.00 | Window Closed / Lapsed |