US3745722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finishing method
Assignee: Roto Finish Co Inc
•
Filing: 1971-09-13
•
Granted: 1973-07-17
•
Expires: 1991-09-13
Abstract
Abstract Workpieces are finished in a vibratory or tumbling finishing apparatus by means of chips containing abrasive grains in an ice matrix. During finishing, a hydrocarbon-based liquid refrigerant chilled below the melting temperature of the ice matrix is circulated through a vibrating admixture of workpieces and chips.
Inventors
- 👤 G Balz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:56
CPC Classifications
B; B24; B24B; B24B31/00; B24B31/12; B24B31/14; C; C09; C09K; C09K5/00; C09K5/20
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
14 words
The method in accordance with claim 1 wherein the liquid refrigerant is mineral spirits.
Claim 2
Dependent Claim
13 words
The method in accordance with claim 1 wherein the liquid refrigerant is naphtha.
Claim 3
Dependent Claim
15 words
The method in accordance with claim 1 wherein the liquid refrigerant is a halogentated hydrocarbon.
Claim 4
Dependent Claim
13 words
The method in accordance with claim 4 wherein the halogenated hydrocarbon is 1,1,1-trichloroethane.
Claim 5
Dependent Claim
18 words
The method in accordance with claim 1 wherein the macroorbital motion is imparted to the admixture by vibration.
Claim 6
Dependent Claim
18 words
The method in accordance with claim 1 wherein the macroorbital motion is imparted to the admixture by tumbling.
Claim 7
Independent Claim
119 words
A method of finishing workpieces in a finishing machine which comprises admixing abrasive grains and water so as to form a slurry of mud-like consistency; casting the slurry into a mold provided with cavities of a predetermined shape; solidifying the slurry in said cavities into a plurality of solid chips by immersion into a bath of a liquid refrigerant comprising a material selected from the group consisting of hydrocarbons and halogenated hydrocarbons chilled to a temperature below the solidification temperature of the slurry; recovering the solid chips from said bath; admixing the recovered chips with workpieces to be finished; imparting macroorbital motion to the resulting admixture; and circulating the chilled liquid refrigerant from the bath through the vibrating admixture.
Claim 8
Dependent Claim
14 words
The method in accordance with claim 8 wherein the liquid refrigerant is mineral spirits.
Claim 9
Dependent Claim
13 words
The method in accordance with claim 8 wherein the liquid refrigerant is naphtha.
Claim 10
Dependent Claim
15 words
The method in accordance with claim 8 wherein the liquid refrigerant is a halogenated hydrocarbon.
Claim 11
Dependent Claim
13 words
The method in accordance with claim 11 wherein the halogenated hydrocarbon is 1,1,1-trichloroethane.
Claim 12
Dependent Claim
18 words
The method in accordance with claim 8 wherein the macroorbital motion is imparted to the admixture by vibration.
Claim 13
Dependent Claim
18 words
The method in accordance with claim 8 wherein the macroorbital motion is imparted to the admixture by tumbling.
References Cited (Backward Citations)
US3324605A
Cited
US3676963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |