Patent US3664412A successfully refreshed from Google Patents.
US3664412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for cutting tool and the like
Assignee: Individual
•
Filing: 1970-12-22
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Granted: 1972-05-23
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Expires: 1990-12-22
Abstract
Abstract A cutting tool cooling system including a cutting tool having an external cutting edge and an internal cavity with a heat receiving surface in heat exchange and fluid sealed relationship to the cutting edge, and a coolant in the cavity vaporizable at the cavity heat receiving surface for extracting heat therefrom and thereby cooling the tool cutting edge.
Inventors
- 👤 Ronald D Zerkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:52
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/10; Y; Y10; Y10S; Y10S62/00; Y10S62/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
60 words
A method of cooling a machine tool having an external cutting edge and an open internal chamber with a heat-receiving surface thereof in heat exchange relation to the cutting edge, comprising the step of: supplying by capillary action substantially unpressurized liquid coolant to said heat-receiving surface for vaporization thereat, without film boiling, by heat transmitted thereto from said cutting edge.
Claim 2
Independent Claim
60 words
A method of cooling a machine tool having an external cutting edge and an open internal chamber with a heat-receiving surface thereof in heat exchange relation to the cutting edge, comprising the step of: supplying by capillary action substantially unpressurized liquid coolant to said heat-receiving surface for vaporization thereat, without film boiling, by heat transmitted thereto from said cutting edge.
Claim 3
Dependent Claim
43 words
The method of claim 1 comprising the further step of exhausting vaporized liquid coolant from said chamber to atmosphere via a vapor exhaust passage in said tool which communicates with the atmosphere and with the interior of said chamber proximate said heat-receiving surface.
References Cited (Backward Citations)
US1129925A
Cited
US1820073A
Cited
US2363141A
Cited
US3438428A
Cited
US3376918A
Cited
US3465813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |