Patent US4784671A successfully refreshed from Google Patents.
US4784671A
Expired / Lapsed
US
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Method of improving the grinding performance of grinding and honing bodies
Assignee: Individual
•
Filing: 1988-03-04
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Granted: 1988-11-15
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Expires: 2008-03-04
Abstract
Abstract A process for improving the grinding performance of a porous ceramic or plastic bound grinding or honing body, using the steps of obtaining a conventionally produced porous ceramic or plastic bound grinding or honing body, and filling the pore spaces of the body at least in part with at least one metal soap.
Inventors
- 👤 Karl Elbel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:34
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/32; B24D3/04; B24D3/14; B24D3/18; B24D3/34; B24D3/342
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
53 words
A process for improving the grinding performance of a porous ceramic or plastic bound grinding or having body, comprising the steps of obtaining a conventionally produced porous ceramic or plastic bound grinding or having body, and filling the pore spaces of the bvody at least in part with at least one metal soap.
Claim 2
Dependent Claim
53 words
A process for improving the grinding performance of a porous ceramic or plastic bound grinding or having body, comprising the steps of obtaining a conventionally produced porous ceramic or plastic bound grinding or having body, and filling the pore spaces of the bvody at least in part with at least one metal soap.
Claim 3
Dependent Claim
28 words
A process as defined in claim 1, wherein the soap comprises a metal ion selected from the group consisting of ions of lithium, sodium, potassium, magnesium, and calcium.
Claim 4
Dependent Claim
30 words
A process as defined in claim 1, wherein the metal soap comprises a salt of at least one of the group consisting of stearic acid, hydroxystearic acid and palmitic acid.
Claim 5
Dependent Claim
28 words
A process as defined in claim 1, wherein the volume percentage of the introduced metal soaps is at least 5% of the entire volume of the grinding body.
Claim 6
Dependent Claim
46 words
A process as defined in claim 1 to 4, wherein the introduction of the metal soaps into the pore spaces is effected by saturation of the grinding or having body with an aqueous or organic solution of the metal soaps and the solvent is then removed.
Claim 7
Dependent Claim
75 words
A process according to claim 1, comprising the further steps of mixing precursors of the metal soap with one another; liquifying the resulting mixture by heating to form a reaction mixture for the formation of one of the desired metal soaps; introducing the reaction mixture into the pore spaces of the body in a vacuum; heating the body so that a reaction takes place to form the metal soap; and driving out the reaction byproducts.
Claim 8
Dependent Claim
28 words
A process as defined in claim 6, wherein the reaction mixture is composed of a fatty acid (C n H 2n+1 --COOH), with n≧11, and a metal compound.
Claim 9
Dependent Claim
53 words
A process as defined in claim 6, wherein the fatty acid is stearic acid and the metal compound is sodium hydroxide; and heating is effected to above 71° C., whereupon, after introduction into the pore spaces, sodium stearate and water form according to the following reaction equation: C.sub.17 H.sub.35 --COOH+NaOH=C.sub.17 H.sub.35 --COONa+H.sub.2 O.
Claim 10
Dependent Claim
73 words
A process as defined in claim 6, wherein the introduction of the metal soap into the pore spaces is effected by producing a melt of ammonium soap; adding thereto the stoichiometric quantity of a metal oxide or hydroxide to form a mixture; saturating the grinding or having body with the mixture and allowing the mixture to react to form the metal soap; and driving out the water and ammonia formed by the reaction.
Claim 11
Dependent Claim
37 words
A process as defined in claim 9, wherein the ammonium soap is C 17 H 35 --COONH 4 and the metal hydroxide is LiOH, thus producing the following reaction: C.sub.17 H.sub.35 --COONH.sub.4 +LiO→C.sub.17 H.sub.35 --COOLi+NH.sub.3 +H.sub.2 O.
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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) | 1991-11-15 | 1992-05-16 | 1992-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-15 | 1996-05-16 | 1996-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-15 | 2000-05-16 | 2000-11-15 | $7700.00 | Window Closed / Lapsed |