US3087618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for separating fine from coarse materials
Assignee: Chain Belt Co
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Filing: 1959-04-20
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Granted: 1963-04-30
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Expires: 1979-04-20
Abstract
No abstract record available.
Inventors
- 👤 Musschoot Albert
- 👤 Leonard B Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:36
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/4609; B07B1/4681; B07B1/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
IN A VIBRATORY SCREENING APPARATUS, IN COMBINATION, AN INCLINED SCREENING CHUTE, SAID CHUTE HAVING AN INCLINED BOTTOM COMPRISING AN ECHELON ARRAY OF SPACED APART BARS EACH PRESENTING A SUBSTANTIALLY HORIZONTAL SURFACE TO FINE MATERIAL IN THE CHUTE, AND MEANS OPERATIVELY CONNECTED TO THE CHUTE TO VIBRATE THE CHUTE ALONG A GENERALLY STRAIGHT PATH INCLINED FROM THE HORIZONTAL IN THE SAME DIRECTION AS THE CHUTE AT AN AMPLITUDE OF VIBRATION SUFFICIENT TO CONVEY FINE MATERIAL ON THE BARS THROUGH THE SPACES BETWEEN THE BARS WHILE PROJECTING COARSE MATERIAL DOWN THE CHUTE.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |