Patent US3713467A successfully refreshed from Google Patents.
US3713467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delimbing blade
Assignee: Deere and Co
•
Filing: 1971-04-26
•
Granted: 1973-01-30
•
Expires: 1991-04-26
Abstract
Abstract Delimbing blades are adapted to be driven lengthwise of a tree stem for removing the limbs from the stem by impact. The blades are curved to fit closely to a tree stem and the trailing portions of the blades are offset in a direction which disposes them farther outwardly from a stem being delimbed than the leading portions of the blades. The offsets define reliefs which permit the leading portions of the blades to return to cutting positions next to the stem while the blades are passing over swells at the bases of limbs which have just been cut.
Inventors
- 👤 V Pierrot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:18
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/095
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
113 words
A delimbing blade adapted for being biased into engagement with and for being quickly advanced along a tree stem for cutting the limbs therefrom by impact, comprising: leading and trailing plate-like members of equal thickness having concave inner surfaces adapted for operating adjacent a tree stem and having convex outer surfaces; said leading member having a leading cutting edge; and the leading portion of the concave surface of the trailing member engaging and being rigidly fixed to the trailing portion of the convex surface of said leading member whereby said concave surface of said trailing member is offset outwardly from the concave surface of said leading member relative to a stem being delimbed.
Claim 2
Dependent Claim
113 words
A delimbing blade adapted for being biased into engagement with and for being quickly advanced along a tree stem for cutting the limbs therefrom by impact, comprising: leading and trailing plate-like members of equal thickness having concave inner surfaces adapted for operating adjacent a tree stem and having convex outer surfaces; said leading member having a leading cutting edge; and the leading portion of the concave surface of the trailing member engaging and being rigidly fixed to the trailing portion of the convex surface of said leading member whereby said concave surface of said trailing member is offset outwardly from the concave surface of said leading member relative to a stem being delimbed.
Claim 3
Dependent Claim
113 words
A delimbing blade adapted for being biased into engagement with and for being quickly advanced along a tree stem for cutting the limbs therefrom by impact, comprising: leading and trailing plate-like members of equal thickness having concave inner surfaces adapted for operating adjacent a tree stem and having convex outer surfaces; said leading member having a leading cutting edge; and the leading portion of the concave surface of the trailing member engaging and being rigidly fixed to the trailing portion of the convex surface of said leading member whereby said concave surface of said trailing member is offset outwardly from the concave surface of said leading member relative to a stem being delimbed.
Claim 4
Dependent Claim
113 words
A delimbing blade adapted for being biased into engagement with and for being quickly advanced along a tree stem for cutting the limbs therefrom by impact, comprising: leading and trailing plate-like members of equal thickness having concave inner surfaces adapted for operating adjacent a tree stem and having convex outer surfaces; said leading member having a leading cutting edge; and the leading portion of the concave surface of the trailing member engaging and being rigidly fixed to the trailing portion of the convex surface of said leading member whereby said concave surface of said trailing member is offset outwardly from the concave surface of said leading member relative to a stem being delimbed.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |