Patent US4939841A successfully refreshed from Google Patents.
US4939841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting tool
Assignee: Individual
•
Filing: 1988-09-06
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Granted: 1990-07-10
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Expires: 2008-09-06
Abstract
Abstract A cutting tool for cutting tree branches and small trees in a minimum of strokes of the tool, as well as for cutting bushes, plants, tall weeds and the like, includes an elongated rigid blade at least about 8 to 10 inches in length, an elongated handle at one end of the blade, a straight cutting edge extending most of the length of the blade, and a curved blade end which curves back toward the handle to form a generally U-shaped cutting end of the blade. The outer non-cutting portion of the blade is at least about 1/4-inch thick and provides the principal mass of the blade. The inner portion of the blade tapers to form the straight cutting edge which is positioned to extend along an axis behind the axis of the handle to balance the tool for efficient cutting.
Inventors
- 👤 Lieng H. Sal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:39
CPC Classifications
A; A01; A01D; A01D1/00; A01G; A01G3/00; A01G3/08; A01G3/081
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
269 words
A cutting tool capable of manually cutting heavy growth such as tree branches with a minimum of cutting strokes, comprising an elongated handle, and an elongated rigid metal blade secured to an end of the handle, the blade having a length (L) of at least about 8 to 10 inches and a width of at least about 2 inches to provide a substantial mass of the blade distributed along the blade length, in which the handle is longer than the blade length, the blade being arranged relative to the handle for positioning a majority of the weight of the blade behind the central longitudinal axis of the handle, the blade having an inside portion tapering to form an elongated substantially straight cutting edge portion (C) extending for at least about half of the blade length, and wherein the majority of the long, straight cutting edge portion of the blade also lies behind the central longitudinal axis of the handle, the free end of the blade tapering narrower and forming a curved generally U-shaped end portion of the blade, in which the long, straight cutting edge portion of the blade merges into a curved inside cutting edge at the free end of the blade extending to the side of the central longitudinal axis of the handle opposite from the straight cutting edge portion, and in which the blade has a substantial portion of its length comprising a non-cutting outer portion behind the cutting edge with a blade thickness of at least about one-fourth inch to thereby balance the blade and provide mass for effective cutting by the straight cutting edge.
Claim 2
Dependent Claim
269 words
A cutting tool capable of manually cutting heavy growth such as tree branches with a minimum of cutting strokes, comprising an elongated handle, and an elongated rigid metal blade secured to an end of the handle, the blade having a length (L) of at least about 8 to 10 inches and a width of at least about 2 inches to provide a substantial mass of the blade distributed along the blade length, in which the handle is longer than the blade length, the blade being arranged relative to the handle for positioning a majority of the weight of the blade behind the central longitudinal axis of the handle, the blade having an inside portion tapering to form an elongated substantially straight cutting edge portion (C) extending for at least about half of the blade length, and wherein the majority of the long, straight cutting edge portion of the blade also lies behind the central longitudinal axis of the handle, the free end of the blade tapering narrower and forming a curved generally U-shaped end portion of the blade, in which the long, straight cutting edge portion of the blade merges into a curved inside cutting edge at the free end of the blade extending to the side of the central longitudinal axis of the handle opposite from the straight cutting edge portion, and in which the blade has a substantial portion of its length comprising a non-cutting outer portion behind the cutting edge with a blade thickness of at least about one-fourth inch to thereby balance the blade and provide mass for effective cutting by the straight cutting edge.
Claim 3
Dependent Claim
28 words
Apparatus according to claim 1 in which the long, straight cutting edge of the blade extends along the central portion of the length of the blade cutting edge.
Claim 4
Dependent Claim
29 words
Apparatus according to claim 1 in which the continuous blade edge has an overall length (D), a majority of which extends behind the central longitudinal axis of the handle.
Claim 5
Dependent Claim
32 words
Apparatus according to claim 3 in which a majority of the length of the curved end portion of the blade edge extends in front of the central longitudinal axis of the handle.
Claim 6
Dependent Claim
23 words
Apparatus according to claim 4 in which the length of the handle is at least about 11/2 times the length of the blade.
Claim 7
Dependent Claim
314 words
A cutting tool capable of manually cutting heavy growth such as tree branches with a minimum of cutting strokes, comprising an elongated handle, and an elongated rigid metal blade extending away from an end of a sleeve which is rigidly affixed to an end of the handle, the blade having a length (L) of at least about 8 to 10 inches extending from the end of the sleeve to a free end of the blade, and a width of at least about 2 inches, to provide a substantial mass of the blade distributed along the blade length; and which the handle is longer is than the blade length; the blade being arranged relative to the handle for positioning a majority of the weight of the blade behind the central longitudinal axis of the handle, the blade having an elongated cutting edge having a lower portion extending from the end of the sleeve in front of the central longitudinal axis of the handle to an elongated substantially straight cutting edge portion (C) extending for at least about half of the blade length, and wherein the majority of the long, straight cutting edge portion of the blade lies behind the central longitudinal axis of the handle; the free end portion of the blade tapering and forming a curved generally U-shaped end portion of the blade, in which the long, straight cutting edge portion of the blade merges into a curved inside cutting edge at the free end of the blade extending to the front side of the central longitudinal axis of the handle opposite from the straight cutting edge portion; and in which the blade has a substantial portion of its length comprising a non-cutting outer portion behind the cutting edge with a blade thickness of at least one-fourth inch to thereby balance the blade and provide mass for effective cutting by the straight cutting edge.
Claim 8
Dependent Claim
314 words
A cutting tool capable of manually cutting heavy growth such as tree branches with a minimum of cutting strokes, comprising an elongated handle, and an elongated rigid metal blade extending away from an end of a sleeve which is rigidly affixed to an end of the handle, the blade having a length (L) of at least about 8 to 10 inches extending from the end of the sleeve to a free end of the blade, and a width of at least about 2 inches, to provide a substantial mass of the blade distributed along the blade length; and which the handle is longer is than the blade length; the blade being arranged relative to the handle for positioning a majority of the weight of the blade behind the central longitudinal axis of the handle, the blade having an elongated cutting edge having a lower portion extending from the end of the sleeve in front of the central longitudinal axis of the handle to an elongated substantially straight cutting edge portion (C) extending for at least about half of the blade length, and wherein the majority of the long, straight cutting edge portion of the blade lies behind the central longitudinal axis of the handle; the free end portion of the blade tapering and forming a curved generally U-shaped end portion of the blade, in which the long, straight cutting edge portion of the blade merges into a curved inside cutting edge at the free end of the blade extending to the front side of the central longitudinal axis of the handle opposite from the straight cutting edge portion; and in which the blade has a substantial portion of its length comprising a non-cutting outer portion behind the cutting edge with a blade thickness of at least one-fourth inch to thereby balance the blade and provide mass for effective cutting by the straight cutting edge.
Claim 9
Dependent Claim
35 words
Apparatus according to claim 6 in which the bottom of the lower cutting edge portion extends immediately from the end of the sleeve along a curve to behind the central longitudinal axis of the handle.
Claim 10
Dependent Claim
29 words
Apparatus according to claim 6 in which the long straight cutting edge portion of the blade extends along the central portion of the length of the blade cutting edge.
Claim 11
Dependent Claim
29 words
Apparatus according to claim 6 in which the continuous blade edge has an overall length (D), a majority of which extends behind the central longitudinal axis of the handle.
Claim 12
Dependent Claim
33 words
Apparatus according to claim 9 in which a majority of the length of the curved free end portion of the blade edge extends in front of the central longitudinal axis of the handle.
Claim 13
Dependent Claim
23 words
Apparatus according to claim 10 in which the length of the handle is at least about 11/2 times the length of the blade.
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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) | 1993-07-09 | 1994-01-08 | 1994-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-09 | 1998-01-08 | 1998-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-09 | 2002-01-08 | 2002-07-10 | $7700.00 | Window Closed / Lapsed |