US3883281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pelletizing disc assembly and control system
Assignee: ADVANCED PROCESSES Inc
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Filing: 1974-06-21
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Granted: 1975-05-13
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Expires: 1994-06-21
Abstract
Abstract A pelletizing disc assembly or the like, including automatically controlled valve means for varying the amount of water sprayed into the pelletizing disc. A Wheatstone bridge is provided in which the variable resistance leg comprises a pair of probes spaced in parallel relationship in the moist mixture in the disc. The probes are driven about their axes at slow speed to keep them clean without excessive wear. The variations in resistance in the gap between probes, caused by variations of moisture content, will control a solenoid valve and vary the amount of water sprayed into the disc.
Inventors
- 👤 Carl A Holley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:53
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/14; B29; B29B; B29B9/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
In apparatus for spraying water on granular material and for compressing the mixture into shapes, means for automatically controlling the amount of water sprayed onto the mixture controlled by a Wheatstone bridge in which the variable resistance leg comprises a pair of probes of substantially cylindrical shape extending in spaced parallel relationship into said mixture, and means for driving said probes about their axes to enable cleaning of the probes without excessive wear.
Claim 2
Dependent Claim
73 words
In apparatus for spraying water on granular material and for compressing the mixture into shapes, means for automatically controlling the amount of water sprayed onto the mixture controlled by a Wheatstone bridge in which the variable resistance leg comprises a pair of probes of substantially cylindrical shape extending in spaced parallel relationship into said mixture, and means for driving said probes about their axes to enable cleaning of the probes without excessive wear.
Claim 3
Dependent Claim
23 words
In apparatus as recited in claim 1 wherein the speed of rotation of said probes is between about 6 rpm and 15 rpm.
Claim 4
Dependent Claim
35 words
In apparatus recited in claim 1 wherein said apparatus comprises a pelletizing disc assembly including a substantially cylindrical container for said mixture and means for adjusting the angle of said container relative to ground level.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |