Patent US3817459A successfully refreshed from Google Patents.
US3817459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device and process for reclaiming used wood
Assignee: Individual
•
Filing: 1973-01-02
•
Granted: 1974-06-18
•
Expires: 1993-01-02
Abstract
Abstract A used wood reclaiming device has a receiving means for material including miscellaneous used wood pieces and accompanying debris. The received material is conveyed to a water tank to effect a separation of floating material from sinking material. The sinking material is conveyed away from the tank while the floating material is conveyed to a wood mill shredding the wood pieces into small particles. Metal is magnetically removed. The remaining shredded wood is then carried to a sizing device from which the smaller particles are sent to storage while the larger particles are carried away.
Inventors
- 👤 D Keller
- 👤 H Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:26
CPC Classifications
D; D21; D21B; D21B1/00; D21B1/02; D21B1/026; D21B1/028; B; B03; B03B; B03B9/00; B03B9/06; B03B9/061; B03B5/00; B03B5/28; B03B5/30; B03B5/36; B03B5/40; B03B2005/405; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/52
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
19 words
A device as in claim 1 including means for urging floating material in said tank toward said second conveyor.
Claim 2
Dependent Claim
18 words
A device as in claim 1 including means for maintaining a predetermined level of water in said tank.
Claim 3
Dependent Claim
21 words
A device as in claim 1 including means in said loading means for distributing said first portion over a predetermined area.
Claim 4
Dependent Claim
25 words
A device as in claim 1 including means associated with said separating means for directing oversize material from said separating means to said first conveyor.
Claim 5
Dependent Claim
33 words
A device as in claim 1 in which said first conveyor is a belt having an upper run and a lower run and including means for removing adhering material from said lower run.
Claim 6
Dependent Claim
64 words
A used wood reclaiming process comprising subjecting received material containing wood pieces and debris to a water bath in one area in which one part of said material floats and another part of said material sinks, removing said one part from said water bath area, then comminuting said one part, and then sizing said one part at least into large pieces and small pieces.
Claim 7
Dependent Claim
19 words
A process as in claim 7 including the step of removing said other part from said water bath area.
Claim 8
Dependent Claim
18 words
A process as in claim 7 including the step of subjecting said one part to a magnetic field.
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |