US3647301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for ascertaining the accumulation of pulverulent, granular or flaky bulk goods
Assignee: Individual
•
Filing: 1970-01-09
•
Granted: 1972-03-07
•
Expires: 1990-01-09
Abstract
Abstract A system is provided for determining an accumulation per unit time and for determining a layer thickness of accumulation of bulk goods such as pulverulent, granular or flaky goods. Preferably, the system uses diffused reflected light from the bulk goods being deposited on a moving surface to determine the rate of accumulation and an optical system including a further light beam and photocell to measure the layer thickness of the accumulation. An integrating means may be provided for ascertaining a cumulative total accumulation within a predetermined period of time.
Inventors
- 👤 Oskar Edwin Sturzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:28
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/4738; G01B; G01B11/00; G01B11/02; G01B11/06; G01B11/0691; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/284; G01F23/292; G01W; G01W1/00; G01W1/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
155 words
A system for ascertaining the accumulation of pulverulent, granular or flaky bulk material comprising: a continuously moving contrasting background surface, a light projector for emitting a beam of light for illumination of said accumulating material and said surface when it is not covered by said accumulation, said light being reflected from said accumulating material as diffused light, means including a photocell positioned to receive said diffused light representative of the accumulation and to provide an output representative of accumulation per unit time, stripper means for removing said accumulation from said surface after a predetermined period of time, means for measuring the thickness of the layer of accumulating material on said background surface comprising a light source to project light across said surface and a further photocell to receive light from said light source, and means to utilize the output of said further photocell as an indication of the thickness of the layer of accumulating material.
Claim 2
Independent Claim
155 words
A system for ascertaining the accumulation of pulverulent, granular or flaky bulk material comprising: a continuously moving contrasting background surface, a light projector for emitting a beam of light for illumination of said accumulating material and said surface when it is not covered by said accumulation, said light being reflected from said accumulating material as diffused light, means including a photocell positioned to receive said diffused light representative of the accumulation and to provide an output representative of accumulation per unit time, stripper means for removing said accumulation from said surface after a predetermined period of time, means for measuring the thickness of the layer of accumulating material on said background surface comprising a light source to project light across said surface and a further photocell to receive light from said light source, and means to utilize the output of said further photocell as an indication of the thickness of the layer of accumulating material.
Claim 3
Dependent Claim
36 words
A system in accordance with claim 1 including an integrator means connected to said further photocell to calculate a cumulative total and to provide an output signal after a predetermined cumulative total layer thickness is achieved.
Claim 4
Dependent Claim
48 words
A system in accordance with claim 1 in which said light source extends in a plane at substantially right angles to the background surface and directs a light beam having rays which are directed parallel to said background surface in a plane substantially perpendicular to said background surface.
Claim 5
Dependent Claim
29 words
A system in accordance with claim 3 further comprising means for shifting said further photocell to positions in accordance with the thickness of the layer on the background surface.
Claim 6
Dependent Claim
85 words
A system in accordance with claim 4 in which said further photocell has an optical axis, said means for shifting said further photocell comprises a motor means for shifting said further photocell in a direction perpendicular to the plane of said background surface and in which an electrical control means for said motor means is controlled by said further photocell to stop said shifting when the optical axis of said further photocell is adjusted to about the outer surface of said layer of accumulating material.
Claim 7
Dependent Claim
24 words
A system in accordance with claim 4 further comprising means to continuously move said background surface past said lighT projector and said light source.
Claim 8
Independent Claim
177 words
A system for ascertaining the accumulation of pulverulent, granular or flaky bulk goods, optically in contrast to a background, comprising a depositing surface rotatable about a predetermined axis to receive an accumulation of bulk goods thereon, a light emitter for directing a light beam towards the bulk goods on said surface, a first photocell for receiving light diffusely reflected from the bulk goods, stripper means for removing deposited bulk goods from said depositing surface in the course of a revolution thereof, means to utilize the output of the first photocell as an indicator of the properties of the accumulative material on the surface, an additional light emitter for providing a flat light beam in a plane extending at right angles to said depositing surface, a further photocell movable at right angles to said depositing surface for receiving said light from said additional light emitter and control means operable in response to output signals from said further photocell to move the latter to positions in accordance with the thickness of the bulk goods prevailing on said depositing surface.
Claim 9
Independent Claim
177 words
A system for ascertaining the accumulation of pulverulent, granular or flaky bulk goods, optically in contrast to a background, comprising a depositing surface rotatable about a predetermined axis to receive an accumulation of bulk goods thereon, a light emitter for directing a light beam towards the bulk goods on said surface, a first photocell for receiving light diffusely reflected from the bulk goods, stripper means for removing deposited bulk goods from said depositing surface in the course of a revolution thereof, means to utilize the output of the first photocell as an indicator of the properties of the accumulative material on the surface, an additional light emitter for providing a flat light beam in a plane extending at right angles to said depositing surface, a further photocell movable at right angles to said depositing surface for receiving said light from said additional light emitter and control means operable in response to output signals from said further photocell to move the latter to positions in accordance with the thickness of the bulk goods prevailing on said depositing surface.
Claim 10
Dependent Claim
31 words
A system according to claim 7 further comprising remote indicating means connected to said further photocell for indicating the thickness of said layer at a location remote from said background surface.
Claim 11
Dependent Claim
34 words
A system according to claim 7, further comprising an integrator means connected to said further photocell to provide an output signal for a predetermined total accumulation when achieved within a given period of time.
Claim 12
Dependent Claim
35 words
A system according to claim 7, further comprising means for rotating the background surface and means for regulating the speed of rotation according to the output of one of said photocell and said further photocell.
References Cited (Backward Citations)
US1706857A
Cited
US2076554A
Cited
US2076553A
Cited
US2489286A
Cited
US2604809A
Cited
US3065665A
Cited
US3232711A
Cited
US3330961A
Cited
US3258686A
Cited
US3526461A
Cited
US3518441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |