US3667601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the dry separation of granular materials
Assignee: Individual
•
Filing: 1969-10-06
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Granted: 1972-06-06
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Expires: 1989-10-06
Abstract
Abstract Granular material dry separator apparatus embodying a resiliently mounted porous deck vibrated longitudinally, the deck having parallel transverse upper grooves at right angles to its longitudinal direction of vibration. Granular material is dropped onto the deck at one end, low pressure air being forced upwardly through the deck while it is being vibrated to cause granules or particles of greater specific gravity to drop to the bottom of the grooves while the lighter particles are caused to float upwardly and flow progressively from groove to groove toward the opposite end of the porous bed or deck. At predetermined intervals, a mechanism tilts the porous deck to discharge the granular contents in the grooves into collection troughs.
Inventors
- 👤 Norris Johnston
- 👤 Mark Latker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:08
CPC Classifications
B; B03; B03B; B03B4/00; B03B4/02; B03B4/06; B03B4/065
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
108 words
In apparatus for separating intermixed materials of different specific gravities: a porous deck on which the intermixed materials are to be deposited; means for forcing a gaseous medium upwardly through said deck; means for vibrating said deck longitudinally along a predetermined path; said deck having spaced parallel grooves in its upper surface extending at right angles to said vibrating path; the ends of said grooves being open at one side of said deck; means for closing said ends of said grooves; means for moving said closing means to open position; and means for laterally tilting said deck to discharge the materials in said grooves through said open ends.
Claim 2
Dependent Claim
108 words
In apparatus for separating intermixed materials of different specific gravities: a porous deck on which the intermixed materials are to be deposited; means for forcing a gaseous medium upwardly through said deck; means for vibrating said deck longitudinally along a predetermined path; said deck having spaced parallel grooves in its upper surface extending at right angles to said vibrating path; the ends of said grooves being open at one side of said deck; means for closing said ends of said grooves; means for moving said closing means to open position; and means for laterally tilting said deck to discharge the materials in said grooves through said open ends.
Claim 3
Dependent Claim
40 words
In apparatus as defined in claim 1; the upstream side walls of said grooves being substantially perpendicular to the plane of said deck; said porous deck being of sintered silica having a permeability of about 5 to about 10 darcys.
Claim 4
Dependent Claim
207 words
In apparatus for separating intermixed materials of different specific gravities: a lower supporting structure; generally parallel leaf springs spaced from each other and secured at their lower portions to said structure and extending upwardly therefrom at a substantial angle to the vertical; an upper supporting structure carried by said leaf springs and secured to the upper portions of said leaf springs, said upper structure including a porous deck on which the intermixed materials are to be deposited; means secured to the lower portion of said upper structure for distributing a gaseous medium to the underside of said deck which can pass upwardly through said deck; means secured to said upper structure for vibrating said upper structure and its deck longitudinally along a predetermined path; said deck having spaced parallel grooves in its upper surface extending at right angles to said vibrating path; the ends of said grooves being open at one side of said deck; means for closing said ends of said grooves; means pivotally mounting said lower structure for lateral tilting; and means for moving said closing means to open position and for tilting said lower supporting structure to tilt said deck laterally and allow materials in said grooves to discharge therefrom through said open ends.
Claim 5
Dependent Claim
207 words
In apparatus for separating intermixed materials of different specific gravities: a lower supporting structure; generally parallel leaf springs spaced from each other and secured at their lower portions to said structure and extending upwardly therefrom at a substantial angle to the vertical; an upper supporting structure carried by said leaf springs and secured to the upper portions of said leaf springs, said upper structure including a porous deck on which the intermixed materials are to be deposited; means secured to the lower portion of said upper structure for distributing a gaseous medium to the underside of said deck which can pass upwardly through said deck; means secured to said upper structure for vibrating said upper structure and its deck longitudinally along a predetermined path; said deck having spaced parallel grooves in its upper surface extending at right angles to said vibrating path; the ends of said grooves being open at one side of said deck; means for closing said ends of said grooves; means pivotally mounting said lower structure for lateral tilting; and means for moving said closing means to open position and for tilting said lower supporting structure to tilt said deck laterally and allow materials in said grooves to discharge therefrom through said open ends.
Claim 6
Dependent Claim
36 words
In apparatus as defined in claim 3; means for conducting materials to be separated onto said deck at one end portion thereof; and means for closing said conducting means prior to tilting said lower supporting structure.
Claim 7
Dependent Claim
65 words
In apparatus as defined in claim 3; means for conducting materials to be separated onto said deck at one end portion thereof; means for closing said conducting means prior to tilting said lower supporting structure; and control means for determining the operation of said means for closing said conducting means and said means for opening said other closing means and tilting said lower supporting structure.
Claim 8
Dependent Claim
29 words
In apparatus as defined in claim 3; and material receiving means at a side of said deck to receive material from said grooves upon lateral tilting of said deck.
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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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |