US3393634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for loosening fibers and wood chips
Assignee: HOSMER MACHINE CO Inc
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Filing: 1965-01-07
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Granted: 1968-07-23
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Expires: 1985-01-07
Abstract
No abstract record available.
Inventors
- 👤 John M Blackford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:12
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
FOR TREATING WOOD CHIPS WHICH HAVE A SMALL THICKNESS COMPARED TO THEIR OTHER DIMENSIONS AND IN WHICH THE FIBERS EXTEND EDGEWISE, THE METHOD WHICH COMPRISES CONTINUOUSLY FEEDING THE CHIPS ALONG A PREDETERMINED PATH AND, AS THE CHIPS PASS A PREDETERMINED LOCATION ALONG SAID PATH, MOMENTARILY COMPRESSING THE CHIPS TRANSVERSELY OF THEIR THICKNESS TO AT LEAST APPROXIMATELY ONE-FIFTH OF THEIR ORIGINAL THICKNESS BUT NOT MORE THAN APPROXIMATELY ONETENTH OF THEIR ORIGINAL THICKNESS AND THEN RELEASING THE PRESSURE TO PERMIT THE CHIPS TO EXPAND APPROXIMATELY TO THEIR ORIGINAL SHAPE, WHEREBY THE FIBERS OF THE CHIPS ARE LOOSENED AND THE POROSITY OF THE CHIPS IS INCREASED WITHOUT DAMAGING THE FIBERS SUBSTANTIALLY.
Claim 2
Dependent Claim
108 words
FOR TREATING WOOD CHIPS WHICH HAVE A SMALL THICKNESS COMPARED TO THEIR OTHER DIMENSIONS AND IN WHICH THE FIBERS EXTEND EDGEWISE, THE METHOD WHICH COMPRISES CONTINUOUSLY FEEDING THE CHIPS ALONG A PREDETERMINED PATH AND, AS THE CHIPS PASS A PREDETERMINED LOCATION ALONG SAID PATH, MOMENTARILY COMPRESSING THE CHIPS TRANSVERSELY OF THEIR THICKNESS TO AT LEAST APPROXIMATELY ONE-FIFTH OF THEIR ORIGINAL THICKNESS BUT NOT MORE THAN APPROXIMATELY ONETENTH OF THEIR ORIGINAL THICKNESS AND THEN RELEASING THE PRESSURE TO PERMIT THE CHIPS TO EXPAND APPROXIMATELY TO THEIR ORIGINAL SHAPE, WHEREBY THE FIBERS OF THE CHIPS ARE LOOSENED AND THE POROSITY OF THE CHIPS IS INCREASED WITHOUT DAMAGING THE FIBERS SUBSTANTIALLY.
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) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |