Patent US4121777A successfully refreshed from Google Patents.
US4121777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile tree removing apparatus
Assignee: Individual
•
Filing: 1977-09-15
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Granted: 1978-10-24
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Expires: 1997-09-15
Abstract
Abstract A mobile tree removing apparatus includes an elongate extensible and retractable boom structure mounted on a vehicle such as a truck. A cutting device is mounted on the outer end of the boom structure and includes a housing having a plurality of cutting members positioned therein. Adjacent cutting members cooperate with each other to cut an entire standing tree including the trunk and limbs thereof into chips. The chips are impelled through a conduit connected to the housing by action of a vacuum pump mounted on a truck.
Inventors
- 👤 Richard M. Kolstad
- 👤 Robert V. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:23
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/08; A01G23/093; A01G3/00; A01G3/002
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
162 words
A mobile tree removing apparatus comprising: a vehicle, an elongate extensible and retractable boom structure mounted on said vehicle and including a plurality of elongate boom sections each having an outer end and an inner end, certain sections engaging the next adjacent section in telescoping relation and being longitudinally shiftable relative to each other, other boom sections being pivotally connected to the next adjacent section, a cutting device including a housing, means shiftably mounting said housing on the outer end of the outer section to permit shifting movement of the house relative to said outer section, revolvable cutter members in said housing for engaging and cutting the limbs and trunks of trees into chips, power means for revolving said cutter members, means defining an elongate conduit having one end thereof communicating with said housing, a vacuum pump connected to the other end of said conduit and being operable for removing chips from said housing through the conduit by means of a vacuum.
Claim 2
Dependent Claim
162 words
A mobile tree removing apparatus comprising: a vehicle, an elongate extensible and retractable boom structure mounted on said vehicle and including a plurality of elongate boom sections each having an outer end and an inner end, certain sections engaging the next adjacent section in telescoping relation and being longitudinally shiftable relative to each other, other boom sections being pivotally connected to the next adjacent section, a cutting device including a housing, means shiftably mounting said housing on the outer end of the outer section to permit shifting movement of the house relative to said outer section, revolvable cutter members in said housing for engaging and cutting the limbs and trunks of trees into chips, power means for revolving said cutter members, means defining an elongate conduit having one end thereof communicating with said housing, a vacuum pump connected to the other end of said conduit and being operable for removing chips from said housing through the conduit by means of a vacuum.
Claim 3
Dependent Claim
39 words
The apparatus as defined in claim 1 wherein said housing is of generally frusto-conical shaped configuration and is swingably mounted on the outer end of said outer section, power means for shifting said housing relative to said outer section.
Claim 4
Dependent Claim
29 words
The device as defined in claim 2 wherein said conduit means comprises an elongate, flexible, extensible and retractable conduit extending between and interconnecting said housing and said vacuum pump.
Claim 5
Dependent Claim
23 words
The device as defined in claim 2 wherein said cutter members are of elongate construction and each has a spiral cutting blade thereon.
Claim 6
Dependent Claim
30 words
The apparatus as defined in claim 2 wherein said cutter members are mounted within said housing for shifting movement relative thereto for adjusting the spacing between the adjacent cutter members.
References Cited (Backward Citations)
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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) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |