Patent US3705602A successfully refreshed from Google Patents.
Patent US3863808A successfully refreshed from Google Patents.
US3863808A
Expired / Lapsed
US
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Particulate material conveying apparatus
Assignee: C-I-L Inc A CORP OF CANADA
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Filing: 1974-03-20
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Granted: 1975-02-04
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Expires: 1994-03-20
Abstract
Abstract Particulate material conveying apparatus, e.g. for conveying powder paint from a container to a spray gun, has a gas flow passage extending past an inlet, and a vibrator for vibrating the inlet to counteract clogging of the inlet. The vibrator comprises a ball driven around a circular race by compressed air, which is thereafter discharged from the vibrator into the gas flow passage to entrain the particulate material into the gas flow passage through the inlet.
Inventors
- 👤 Charles R Vertue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:43
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/144; B05B7/1445; B05B7/1472; B65; B65G; B65G53/00; B65G53/04; B65G53/06; B65G53/10; B65G53/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
126 words
Particulate material conveying apparatus, comprising: an inlet for the entry of particulate material into the apparatus; a gas flow passage extending past said inlet; means for vibrating said inlet comprising a ball race extending around and spaced outwardly from said gas flow passage and a ball adapted to be driven around said race; and a compressed gas supply passage communicating with said vibrator means for supplying compressed gas to said vibrator means to drive the ball around the race; said vibrator means having a compressed gas outlet communicating with said gas flow passage for discharging the compressed gas from said vibrator means along said gas flow passage past said inlet to thereby entrain the particulate material through said inlet into and along said gas flow passage.
Claim 2
Dependent Claim
126 words
Particulate material conveying apparatus, comprising: an inlet for the entry of particulate material into the apparatus; a gas flow passage extending past said inlet; means for vibrating said inlet comprising a ball race extending around and spaced outwardly from said gas flow passage and a ball adapted to be driven around said race; and a compressed gas supply passage communicating with said vibrator means for supplying compressed gas to said vibrator means to drive the ball around the race; said vibrator means having a compressed gas outlet communicating with said gas flow passage for discharging the compressed gas from said vibrator means along said gas flow passage past said inlet to thereby entrain the particulate material through said inlet into and along said gas flow passage.
Claim 3
Dependent Claim
66 words
Particulate material conveying apparatus as claimed in claim 1, further comprising a nozzle, said inlet comprising an inlet passage extending through said nozzle from the mouth of said nozzle to said gas flow passage, the outer surface of said nozzle having an outer surface which is tapered and converges with said inlet passage at said nozzle mouth to form a thin annular edge around said mouth.
Claim 4
Dependent Claim
32 words
Pariculate material conveying apparatus as claimed in claim 1, wherein a constriction is provided in said gas flow passage for increasing the speed of flow of the compressed gas past said inlet.
Claim 5
Dependent Claim
38 words
Particulate material conveying apparatus as claimed in claim 3, wherein said constriction comprises a constriction passage extending along said gas flow passage to said inlet and having a cross-sectional area less than that of said gas flow passage.
Claim 6
Dependent Claim
78 words
Particulate material conveying apparatus as claimed in claim 4, wherein said constriction passage is formed in a constrictor extending along part of said gas discharge passage, said constrictor and the wall of said gas discharge passage defining therebetween a space connecting said compressed gas outlet with one end of said constrictor, means being provided for preventing flow of the gas between the wall of said gas discharge passage and said constrictor to the other end of said constrictor.
Claim 7
Dependent Claim
44 words
Particulate material conveying apparatus as claimed in claim 5, wherein said constrictor comprises a tube extending along said gas discharge passage and spaced inwardly of the wall of said gas discharge passage from said compressed gas outlet to said one end of said constrictor.
Claim 8
Dependent Claim
25 words
Particulate material conveying apparatus as claimed in claim 4, further comprising means defining a powder collection space at the inlet end of said constriction passage.
Claim 9
Dependent Claim
36 words
Particulate material conveying apparatus as claimed in claim 1, wherein said vibrator means and said gas flow passage are provided in a common body, and said body has on its exterior a downwardly convergent tapered undersurface.
Claim 10
Dependent Claim
26 words
Particulate material conveying apparatus as claimed in claim 8, wherein said body is formed of two separate parts secured together with said ball race housed therebetween.
Claim 11
Dependent Claim
66 words
ParticulAte material conveying apparatus as claimed in claim 9, further comprising a gas flow tube through which said gas flow passage extends, said gas flow tube extending through said body and abutting one of said parts of said body, and a retainer in abutment with the other part of said body and secured to said gas flow tube, whereby said two body parts are secured together.
Claim 12
Dependent Claim
35 words
Particulate material conveying apparatus as claimed in claim 8, further comprising a tube projecting from said body, said inlet comprising an inlet passage extending through said tube, and said tube having a tapered outer end.
Claim 13
Dependent Claim
25 words
Particulate material conveying apparatus as claimed in claim 1, wherein said inlet comprises a tube protruding from said apparatus and having a tapered outer end.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |