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US4170900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary sampler for particulate matter
Assignee: Individual
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Filing: 1978-01-20
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Granted: 1979-10-16
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Expires: 1998-01-20
Abstract
Abstract A rotary sampler for taking quality control samples from a falling stream of material is disclosed. The sampler includes an impeller which is driven by the falling material. As the impeller turns a hollow collector blade moves through the falling stream. Material within the stream is diverted through the hollow collector blade to a central collector tube. The device includes means for controlling the frequency of sampling.
Inventors
- 👤 Kenneth Y. Ozawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:49
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
107 words
Apparatus for sampling a moving stream of material including a body defining a material intake and exit port, a movable sample taking chute, which includes a hollow collector tube and means for controlling the frequency of sample taking means wherein the improvement comprises an impeller including a plurality of angular blades and further including at least one hollow blade which defines a sample taking chute; the impeller response to impingement of the moving stream on the angular blades to move the chute through an entire cross-section of the moving stream; the chute defining a hollow passage to direct material entering the chute into the hollow collector tube.
Claim 2
Dependent Claim
107 words
Apparatus for sampling a moving stream of material including a body defining a material intake and exit port, a movable sample taking chute, which includes a hollow collector tube and means for controlling the frequency of sample taking means wherein the improvement comprises an impeller including a plurality of angular blades and further including at least one hollow blade which defines a sample taking chute; the impeller response to impingement of the moving stream on the angular blades to move the chute through an entire cross-section of the moving stream; the chute defining a hollow passage to direct material entering the chute into the hollow collector tube.
Claim 3
Dependent Claim
65 words
Apparatus for taking a sample of a stream of moving material comprising: a frame; an impeller on the frame comprising a plurality of angular blades mounted in spaced apart relation and including a sample taking blade which defines a sample collecting chute, the sample taking blade movable by impingement of the stream on the angular blades; and means for controlling the frequency of sample taking.
Claim 4
Dependent Claim
65 words
Apparatus for taking a sample of a stream of moving material comprising: a frame; an impeller on the frame comprising a plurality of angular blades mounted in spaced apart relation and including a sample taking blade which defines a sample collecting chute, the sample taking blade movable by impingement of the stream on the angular blades; and means for controlling the frequency of sample taking.
Claim 5
Dependent Claim
97 words
Apparatus for sampling a stream of moving material comprising: a frame; a hollow body on the frame; an impeller within the body; the impeller comprising a plurality of blades mounted angular to the direction of the moving material stream, the blades set in spaced apart relation to define a plurality of spaces through which the moving stream passes; the impeller including a sample collecting blade movable through substantially an entire cross-section of the moving stream under the influence of the stream impinging on the angular blades; and sample taking cycle control means operatively connected to the impeller.
Claim 6
Dependent Claim
97 words
Apparatus for sampling a stream of moving material comprising: a frame; a hollow body on the frame; an impeller within the body; the impeller comprising a plurality of blades mounted angular to the direction of the moving material stream, the blades set in spaced apart relation to define a plurality of spaces through which the moving stream passes; the impeller including a sample collecting blade movable through substantially an entire cross-section of the moving stream under the influence of the stream impinging on the angular blades; and sample taking cycle control means operatively connected to the impeller.
Claim 7
Dependent Claim
93 words
Apparatus for sampling a stream of moving material comprising: a hollow body having material intake and exit ports; an impeller within the body defining a sample collector tube at one end of said impeller; angular blades on the impeller mounted so as to define a plurality of spaces through which the moving stream passes; a hollow chute operatively attached to the collector tube, the chute movable through substantially an entire cross-section of the stream by impingement of the stream on the angular blades; and a sampling frequency control operatively connected to the impeller.
Claim 8
Dependent Claim
93 words
Apparatus for sampling a stream of moving material comprising: a hollow body having material intake and exit ports; an impeller within the body defining a sample collector tube at one end of said impeller; angular blades on the impeller mounted so as to define a plurality of spaces through which the moving stream passes; a hollow chute operatively attached to the collector tube, the chute movable through substantially an entire cross-section of the stream by impingement of the stream on the angular blades; and a sampling frequency control operatively connected to the impeller.
Claim 9
Dependent Claim
20 words
Apparatus according to claim 2 wherein the frequency controlling means includes optionally disengagable means for impeding movement of the impeller.
Claim 10
Dependent Claim
21 words
Apparatus according to claim 5 wherein the optionally engagable means includes an impeller engaging solenoid operatively connected to frequency timing means.
Claim 11
Dependent Claim
20 words
Apparatus according to claim 6 wherein the frequency timing means includes means for sensing material flow rate into the body.
Claim 12
Dependent Claim
17 words
Apparatus according to claim 6 wherein the frequency timing means includes means for sensing varying material volume.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-15 | 1983-04-16 | 1983-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-15 | 1987-04-16 | 1987-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-15 | 1991-04-16 | 1991-10-16 | $7700.00 | Window Closed / Lapsed |