Patent US3783916A successfully refreshed from Google Patents.
US3783916A
Expired / Lapsed
US
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Chipper chip-removing structure
Assignee: Nicholson Manufacturing Co
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Filing: 1972-05-02
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Granted: 1974-01-08
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Expires: 1992-05-02
Abstract
Abstract A rotating chipping drum is mounted in a hollow body with a portion of its periphery exposed to a chipping chamber for holding log sections to be chipped. Cutting bits are mounted in apertures of the chipping drum so that chips cut from the log section enter the interior of the drum. The chips are removed from the interior of the drum by a conveyor of the screw type, of the belt type, or of the chain type, extending partially or entirely through the interior of the drum. The rotative axis of the chipping drum may be inclined to urge a log section toward one end of the chipping chamber.
Inventors
- 👤 T Nicholson
- 👤 R Jorgensen
- 👤 S Vanek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:17
CPC Classifications
B; B27; B27L; B27L11/00; B27L11/002; B27L11/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
A peripheral chipper comprising a hollow body having therein a chipping chamber, a rotary chipping drum including a plurality of bits having cutting edges projecting from its periphery, means mounting said chipping drum for rotation with a portion of its periphery exposed to said chipping chamber for engagement by a log section in said chamber, and endless-loop conveyor means including a first linear-moving stretch exteinding axially through said chipping drum throughout its length and traveling in one direction for moving chips axially of said chipping drum for discharge of chips from one end of said chipping drum and a second linear-moving stretch outside said drum and moving in the opposite direction.
Claim 2
Dependent Claim
111 words
A peripheral chipper comprising a hollow body having therein a chipping chamber, a rotary chipping drum including a plurality of bits having cutting edges projecting from its periphery, means mounting said chipping drum for rotation with a portion of its periphery exposed to said chipping chamber for engagement by a log section in said chamber, and endless-loop conveyor means including a first linear-moving stretch exteinding axially through said chipping drum throughout its length and traveling in one direction for moving chips axially of said chipping drum for discharge of chips from one end of said chipping drum and a second linear-moving stretch outside said drum and moving in the opposite direction.
Claim 3
Dependent Claim
24 words
The chipper defined in claim 1, in which the conveyor having one stretch means includes a belt conveyor extending axially through the chipping drum.
Claim 4
Dependent Claim
38 words
The chipper defined in claim 2, in which the belt conveyor includes a belt, belt-supporting plate means closely underlying said belt, and means for supplying a dynamic cushion of air between said belt-supporting plate means and said belt.
Claim 5
Dependent Claim
30 words
The chipper defined in claim 1, in which the conveyor means includes a trough extending axially of the chipping drum and a flight conveyor having flights moving along said trough.
Claim 6
Dependent Claim
37 words
The chipper defined in claim 1, in which the second stretch of the conveyor means moves beneath the rotary chipping drum for receiving chips from the first stretch and from the lower portion of the chipping drum.
Claim 7
Dependent Claim
32 words
The chipper defined in claim 5, in which the second stretch of the conveyor means beneath the rotary chipping drum is inclined upwardly from the chip discharge end of the chipping drum.
References Cited (Backward Citations)
US3155130A
Cited
US3266542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |