Patent US4623350A successfully refreshed from Google Patents.
US3795348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for delivering particulate material
Assignee: C-I-L Inc A CORP OF CANADA
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Filing: 1972-08-07
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Granted: 1974-03-05
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Expires: 1992-08-07
Abstract
Abstract A device for delivery of particulate material, e.g. to a spray gun, has a gas flow passage communicating with an outlet, an inlet in the passage for connection to a fluidized bed of the particulate material, and a gas flow constriction for discharging compressed gas into the passage to entrain the particulate material from the inlet to the outlet. The inlet communicates with the fluidized bed through an inlet nozzle having an inlet passage extending from a mouth, the inlet nozzle having an outer surface which tapers towards the mouth and converges with the inlet passage at the mouth to form a thin edge around the mouth which counteracts build-up of particulate material at the mouth.
Inventors
- 👤 C Vertue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:40
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/1472; B05C; B05C19/00; B05C19/02; B24; B24C; B24C5/00; B24C5/005; B24C5/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
145 words
A device for conveying particulate material, comprising: a. means defining a first passage for the flow of gas under pressure, b. means defining an outlet communicating with said first passage, c. means defining an inlet opening into said first passage for the flow of the particulate material to the first passage, d. a constriction in said first passage for directing a forced supply of gas along said first passage towards said outlet to draw the particulate material through said inlet and to cause the particulate material to be entrained by the gas along said first passage to said outlet, and e. an inlet nozzle having means defining a second passage communicating with said inlet, a mouth for the entry of the particulate material into said second passage, and an outer surface which tapers towards said mouth and converges with said second passage at said mouth.
Claim 2
Independent Claim
145 words
A device for conveying particulate material, comprising: a. means defining a first passage for the flow of gas under pressure, b. means defining an outlet communicating with said first passage, c. means defining an inlet opening into said first passage for the flow of the particulate material to the first passage, d. a constriction in said first passage for directing a forced supply of gas along said first passage towards said outlet to draw the particulate material through said inlet and to cause the particulate material to be entrained by the gas along said first passage to said outlet, and e. an inlet nozzle having means defining a second passage communicating with said inlet, a mouth for the entry of the particulate material into said second passage, and an outer surface which tapers towards said mouth and converges with said second passage at said mouth.
Claim 3
Dependent Claim
20 words
A device as claimed in claim 1, wherein means are provided for readily releasably securing said nozzle to said device.
Claim 4
Dependent Claim
23 words
A device as claimed in claim 1, wherein said constriction is formed by a gas flow restrictor insert provided in said first passage.
Claim 5
Dependent Claim
36 words
A device as claimed in claim 1, wherein a powder inlet passage connects said second passage to said inlet, and said second passage forms a flow restrictor for restricting flow from said mouth to said inlet.
Claim 6
Independent Claim
165 words
A device for conveying particulate material, comprising: a. means defining a first passage for the flow of gas under pressure, b. means defining an outlet communicating with said first passage, c. means defining an inlet particulate into said first passage for the flow of the particulate material to the first passage, d. a constriction in said first passage for directing a forced supply of gas along said first passage towards said outlet to draw the particulate material through said inlet and to cause the particulate material to be entrained by the gas along said first passage to said outlet; and e. an inlet nozzle having means defining an axial inlet passage aligned with and communicating with said inlet, a mouth at one end of said inlet passage for the entry of the particulate material into said axial inlet passage, and a frusto-conical outer surface which tapers towards said mouth and converges with said inlet passage at said mouth to form a knife-edge around said mouth.
Claim 7
Independent Claim
165 words
A device for conveying particulate material, comprising: a. means defining a first passage for the flow of gas under pressure, b. means defining an outlet communicating with said first passage, c. means defining an inlet particulate into said first passage for the flow of the particulate material to the first passage, d. a constriction in said first passage for directing a forced supply of gas along said first passage towards said outlet to draw the particulate material through said inlet and to cause the particulate material to be entrained by the gas along said first passage to said outlet; and e. an inlet nozzle having means defining an axial inlet passage aligned with and communicating with said inlet, a mouth at one end of said inlet passage for the entry of the particulate material into said axial inlet passage, and a frusto-conical outer surface which tapers towards said mouth and converges with said inlet passage at said mouth to form a knife-edge around said mouth.
References Cited (Backward Citations)
US1664803A
Cited
US3134513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |