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US4269393A Expired / Lapsed US ⏱️ 0.0 years remaining

Tree-felling lever

Assignee: Individual
•
Filing: 1979-11-27
•
Granted: 1981-05-26
•
Expires: 1999-11-27
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Abstract

Abstract A tree-felling implement is disclosed, which is particularly effective for felling frozen trees. The implement is of the type comprising flat plate with a front transverse straight edge, a lever arm being rigidly secured to the top face of the flat plate and extending upwardly at an acute angle rearwardly from the flat plate. This implement is characterized by the provision of a bite member which downwardly projects from the bottom surface of the plate along the front transverse edge. Said bite member has a generally rectangular cross-section providing parallel front and rear flat side faces substantially perpendicular to the bottom surface of the plate and a flat edge surface substantially parallel to the bottom surface of the plate. The plate and the bite member are thin enough to be inserted into a saw kerf made in the trunk of a frozen tree. Upon pivoting of the plate within the kerf by means of the lever arm, the bite member enters into the lower frozen kerf surface without cracking the ice, and the uncracked ice provides an effective abutment to prevent the flat plate from slipping out of the kerf.

Inventors

  • 👤 Honore Michaud

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 01:01
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/099; B; B66; B66F; B66F15/00

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 200 words
A tree-felling lever, especially for frozen trees, comprising a flat plate having top and bottom surfaces and a front transverse straight edge, a lever arm rigidly secured to the top face of said flat plate and extending upwardly at an acute angle and rearwardly from said flat plate, and a bite member downwardly projecting from said bottom surface along said front transverse edge and having parallel front and rear flat faces substantially perpendicular to said bottom surface, and a free edge flat face substantially parallel to said bottom surface, said plate and bite member being thin enough to be inserted into a saw kerf made in the trunk of a frozen tree, whereby said tree may be felled by exerting upward force on the outer end of said lever arm, thus causing pivoting of said plate in said kerf about said bite member and insertion of said bite member into the lower kerf surface practically without cracking the ice in said lower kerf surface, the uncracked ice at the back of the inserted bite member providing an effective abutment means for said bite member, in order for the latter to prevent the flat plate from slipping out of the kerf.
Claim 2
Dependent Claim 200 words
A tree-felling lever, especially for frozen trees, comprising a flat plate having top and bottom surfaces and a front transverse straight edge, a lever arm rigidly secured to the top face of said flat plate and extending upwardly at an acute angle and rearwardly from said flat plate, and a bite member downwardly projecting from said bottom surface along said front transverse edge and having parallel front and rear flat faces substantially perpendicular to said bottom surface, and a free edge flat face substantially parallel to said bottom surface, said plate and bite member being thin enough to be inserted into a saw kerf made in the trunk of a frozen tree, whereby said tree may be felled by exerting upward force on the outer end of said lever arm, thus causing pivoting of said plate in said kerf about said bite member and insertion of said bite member into the lower kerf surface practically without cracking the ice in said lower kerf surface, the uncracked ice at the back of the inserted bite member providing an effective abutment means for said bite member, in order for the latter to prevent the flat plate from slipping out of the kerf.
Claim 3
Dependent Claim 79 words
A tree-felling lever as defined in claim 1, wherein said lever arm consists of two sections: an inner section and an outer tubular section, said inner section being telescoped within said outer section along a substantial portion of the length of said outer section; said inner section being rigidly secured to said flat plate and also rigidly secured to said outer section, said outer section being made of a lighter and weaker material than that of said inner section.
Claim 4
Dependent Claim 41 words
A tree-felling lever as defined in claim 2, wherein the upper end of said outer section is provided with a handle extending away from said upper end and lying in a plane generally parallel to the plane of said flat plate.

References Cited (Backward Citations)

US326621A Cited
US498677A Cited
US2843932A Cited
US3257018A Cited
US3953048A Cited
US4030700A Cited
US4130270A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-05-25 1984-11-24 1985-05-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-05-25 1988-11-24 1989-05-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-05-25 1992-11-24 1993-05-26 $7700.00 Window Closed / Lapsed

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