Patent US2244257A successfully refreshed from Google Patents.
US3577808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sub-zero cutting fluid generator
Assignee: Boeing Co
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Filing: 1968-12-13
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Granted: 1971-05-04
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Expires: 1988-12-13
Abstract
Abstract This cutting fluid generator comprises a variety of components connected and arranged so that an improved method for applying cutting fluids (consisting of a coolant-lubricant mixture) through an external mist delivery to drills is obtained. Pressurized, dry, clean air is delivered to a mixing station provided with a venturi which increases the speed of the air via a suction chamber connected to the cutting fluid supply. The cutting fluid is micronized and intermixed into the airstream by vacuum suction of the passing air and the micronized cutting fluid will instantaneously evaporate in the mist projected onto the drill and workpiece, which will result in thorough lubrication and a -26* F. cooling.
Inventors
- 👤 Gerrit A Visser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:58
CPC Classifications
B; B23; B23P; B23P25/00; B23Q; B23Q11/00; B23Q11/10; B23Q11/1038; B23Q11/1046; B23Q11/1053; B23Q11/1076; Y; Y02; Y02P; Y02P70/00; Y02P70/10; Y10; Y10S; Y10S82/00; Y10S82/90; Y10T; Y10T408/00; Y10T408/44; Y10T408/46; Y10T82/00; Y10T82/30; Y10T83/00; Y10T83/263; Y10T83/283; Y10T83/293
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
246 words
A subzero cutting fluiD mist generator apparatus for power drills comprising in combination: a. a container carrying a cutting fluid having lubricant and refrigerant characteristics, b. an air compressor, c. a first regulating valve and indicating means connecting said air compressor to said container for supplying a low pressure to said cutting fluid, d. a mixing station with a nozzle, e. a second regulating valve and indicating means connecting said air compressor to said mixing station for supplying high air pressure to said mixing station, f. a conduit connecting said container to said mixing station for supplying said low pressure cutting fluid to said mixing station, and g. said mixing station employing a first chamber having a venturi arrangement for speeding up said compressed air from said air compressor and for exhausting said speeded-up air via said nozzle to said associated power drill cutting surfaces, and a second chamber containing porous material for receiving and micronizing said supplied cutting fluid and a third chamber between said first and said second chamber so located that said speeded-up air passes adjacent to said third chamber whereby said micronized cutting fluid, under a regulated low pressure set by said first regulating valve in coordination with said high air pressure regulated by said second regulating valve in proper relationship, will be lifted from said porous material and travel via said third chamber into said high pressure speeded-up air towards said nozzle thereby forming said subzero nozzle cutting fluid mist output.
Claim 2
Dependent Claim
246 words
A subzero cutting fluiD mist generator apparatus for power drills comprising in combination: a. a container carrying a cutting fluid having lubricant and refrigerant characteristics, b. an air compressor, c. a first regulating valve and indicating means connecting said air compressor to said container for supplying a low pressure to said cutting fluid, d. a mixing station with a nozzle, e. a second regulating valve and indicating means connecting said air compressor to said mixing station for supplying high air pressure to said mixing station, f. a conduit connecting said container to said mixing station for supplying said low pressure cutting fluid to said mixing station, and g. said mixing station employing a first chamber having a venturi arrangement for speeding up said compressed air from said air compressor and for exhausting said speeded-up air via said nozzle to said associated power drill cutting surfaces, and a second chamber containing porous material for receiving and micronizing said supplied cutting fluid and a third chamber between said first and said second chamber so located that said speeded-up air passes adjacent to said third chamber whereby said micronized cutting fluid, under a regulated low pressure set by said first regulating valve in coordination with said high air pressure regulated by said second regulating valve in proper relationship, will be lifted from said porous material and travel via said third chamber into said high pressure speeded-up air towards said nozzle thereby forming said subzero nozzle cutting fluid mist output.
Claim 3
Dependent Claim
96 words
A subzero cutting fluid generator apparatus for power drills as claimed in claim 1 wherein said mixing station venturi arrangement for said compressed air comprises a convergent channel connected to a divergent channel so that said air increases its speed and wherein said divergent channel is connected to a surrounded porous material connected to said cutting fluid conduit so that said cutting fluid micronizes into said porous material and is evenly distributed into said divergent channel exit by the vacuum created by said speeded air traveling therethrough, whereby said fluid air mixture becomes a gaseous product.
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |