Patent US3763904A successfully refreshed from Google Patents.
US3763904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Limbing head
Assignee: Individual
•
Filing: 1971-09-15
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Granted: 1973-10-09
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Expires: 1991-09-15
Abstract
Abstract A limbing head for removing limbs from a tree includes a body and a pair of curved limbing arms, each pivotally secured to the body at laterally spaced positions for receiving a tree between the arms. Means for pivoting a first arm towards and away from the second arm are provided, together with means connecting the second arm to the first arm to cause the second arm to pivot simultaneously with the first arm towards and away from the first arm.
Inventors
- 👤 J Eynon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:39
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/095; A01G23/097
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
117 words
A limbing head for removing limbs from a tree, including a body and a pair of curved limbing arms, each pivotally secured to the body at laterally spaced positions for receiving a tree between said arms, each limbing arm being curved about an axis parallel to the length of the tree and having a leading edge shaped to remove limbs from the tree upon longitudinal relative movement between the limbing head and the tree, means for pivoting a first arm towards and away from the second arm, and gear means connecting the second arm to the first arm to cause the second arm to pivot simultaneously with the first arm towards and away from the first arm.
Claim 2
Dependent Claim
117 words
A limbing head for removing limbs from a tree, including a body and a pair of curved limbing arms, each pivotally secured to the body at laterally spaced positions for receiving a tree between said arms, each limbing arm being curved about an axis parallel to the length of the tree and having a leading edge shaped to remove limbs from the tree upon longitudinal relative movement between the limbing head and the tree, means for pivoting a first arm towards and away from the second arm, and gear means connecting the second arm to the first arm to cause the second arm to pivot simultaneously with the first arm towards and away from the first arm.
Claim 3
Dependent Claim
23 words
A limbing head according to claim 1 including means for pivoting the second arm, independently of the first arm, to a log-discharging position.
Claim 4
Dependent Claim
31 words
A limbing head according to claim 1 wherein said connecting means includes a first rotatable gear secured to the first arm, and a second rotatable gear secured to the second arm.
Claim 5
Dependent Claim
24 words
A limbing head according to claim 3 wherein said pivoting means includes a piston and cylinder jack operable to cause rotation of said gears.
Claim 6
Dependent Claim
28 words
A limbing head according to claim 3 wherein said connecting means includes a further rotatable gear between the first and second gears and meshing with the second gear.
Claim 7
Dependent Claim
66 words
A limbing head according to claim 5 wherein said second arm and second gear are mounted on a bracket, said bracket being mounted for rotation about the axis of rotation of said further gear, and including means for rotating the bracket about the rotational axis of the further gear to cause the second arm to pivot to a log-discharging position without movement of the first arm.
Claim 8
Dependent Claim
27 words
A limbing head according to claim 1 wherein the first and second arms are spaced from one another in a direction parallel to their axes of rotation.
References Cited (Backward Citations)
US3308861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |