US3877647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet mill
Assignee: Individual
•
Filing: 1973-05-30
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Granted: 1975-04-15
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Expires: 1993-05-30
Abstract
Abstract The improvement relates to the heater of compressed gas which is delivered from the heater to the nozzles of a jet mill, the flow of compressed gas escaping from the nozzles drawing in and accelerating the particles of the material being comminuted. The improvement consists in that each nozzle of the jet mill communicates by way of the inlet thereof with a chamber housing a heater element. The chambers communicate with a source of compressed gas supply. Compressed gas is delivered to the nozzles through a chamber housing a heater element.
Inventors
- 👤 Vladimir Ivanovich Gorobets
- 👤 Larisa Zhanovna Gorobets
- 👤 Anatoly Alexandrovich Ivanov
- 👤 Georgy Petrovich Tropin
- 👤 Veniamin Ivanovich Chirkov
- 👤 Veniamin Viktorov Konstantinov
- 👤 Viktor Deomidovich Belyaev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:14
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/06; B02C19/065
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
126 words
A jet mill, wherein the material to be comminuted is ground through the collision of its particles accelerated by gas jets, comprising: a milling chamber; nozzles being disposed within said chamber and having outlets thereof directed toward the interior of said chamber; additional chambers communicating via pipes with a source of compressed gas and being connected directly to said nozzles; heater elements being disposed in said additional chambers; a classifier sizing the particles and communicating via pipes with said milling chamber; a precipitator being disposed downstream of said classifier and communicating therewith; an exhaust device being disposed downstream of said precipitator and venting exhaust gas from the mill; and a feed hopper communicating with said milling chamber at the points where said nozzles are disposed therein.
Claim 2
Dependent Claim
126 words
A jet mill, wherein the material to be comminuted is ground through the collision of its particles accelerated by gas jets, comprising: a milling chamber; nozzles being disposed within said chamber and having outlets thereof directed toward the interior of said chamber; additional chambers communicating via pipes with a source of compressed gas and being connected directly to said nozzles; heater elements being disposed in said additional chambers; a classifier sizing the particles and communicating via pipes with said milling chamber; a precipitator being disposed downstream of said classifier and communicating therewith; an exhaust device being disposed downstream of said precipitator and venting exhaust gas from the mill; and a feed hopper communicating with said milling chamber at the points where said nozzles are disposed therein.
Claim 3
Dependent Claim
93 words
A jet mill as claimed in claim 1, wherein each of said additional chambers communicating with the source of compressed gas houses a perforated sleeve associated with each heater element; each said sleeve communicating at one end thereof with the corresponding nozzle and at the other end with the chamber housing the sleeve; and wherein pipes, whereby said additional chambers communicate with said sources of compressed gas, are built into that section of said additional chambers which is opposite the section where said sleeve communicates with said chamber and adjacent the associated nozzle.
Claim 4
Dependent Claim
16 words
A jet mill as claimed in claim 2, wherein each said sleeve is the heater element.
Claim 5
Dependent Claim
17 words
A jet mill as claimed in claim 2, wherein each said sleeve encloses the associated heater element.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |