US5359778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knife with cutting hook
Assignee: Buck Knives Inc
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Filing: 1992-08-13
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Granted: 1994-11-01
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Expires: 2012-08-13
Abstract
Abstract A knife comprises a handle, a blade having a blade back, and a hook integral with the blade. The hook includes a hook body extending laterally outwardly from the blade back side of the knife blade. A finger of substantially constant diameter and with no sharp edges extends rearwardly toward the handle from the outward margin of the hook body. The finger preferably has a length of at least about 0.2 inches and is displaced laterally outwardly from the adjacent portion of the knife back by a distance of at least about 1/4 inch. The finger is oriented at an angle to the handle of at least about 5 degrees. A slot defined by the hook body, the finger, and a portion of the blade back includes a straight cutting edge oriented at 90 degrees to the finger, and centering ramps that guide the material being cut into the cutting edge.
Inventors
- 👤 Brett P. Seber
- 👤 Randolph J. Morton
- 👤 William H. Keys
- 👤 Patrick W. Kraft
- 👤 William R. Bates, Jr.
- 👤 Marlow D. Hussey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:49
CPC Classifications
B; B26; B26B; B26B3/00; B26B3/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
162 words
A knife, comprising: a handle; a blade having a blade back; and a hook integral with the blade and including a hook body extending laterally outwardly from the blade back side of the knife blade, the outwardly extending margin of the hook body defining a hook back, a finger extending rearwardly toward the handle from the outward margin of the hook body, the finger having a finger back forming a continuous surface with the hook back, the hook body, the finger, and a portion of the blade back defining a hook slot having a slot outer side, a slot inner side, and a slot bottom that is substantially straight and oriented at an angle of about 90 degrees to the hook back, an outer ramp from the slot outer side to a first end of the slot bottom, an inner ramp from the slot inner side to a second end of the slot bottom, and a cutting edge at the slot bottom.
Claim 2
Dependent Claim
162 words
A knife, comprising: a handle; a blade having a blade back; and a hook integral with the blade and including a hook body extending laterally outwardly from the blade back side of the knife blade, the outwardly extending margin of the hook body defining a hook back, a finger extending rearwardly toward the handle from the outward margin of the hook body, the finger having a finger back forming a continuous surface with the hook back, the hook body, the finger, and a portion of the blade back defining a hook slot having a slot outer side, a slot inner side, and a slot bottom that is substantially straight and oriented at an angle of about 90 degrees to the hook back, an outer ramp from the slot outer side to a first end of the slot bottom, an inner ramp from the slot inner side to a second end of the slot bottom, and a cutting edge at the slot bottom.
Claim 3
Dependent Claim
20 words
The knife of claim 1, wherein the finger is substantially parallel to the laterally adjacent portion of the blade back.
Claim 4
Dependent Claim
30 words
The knife of claim 1, wherein the finger is laterally separated from the adjacent portion of the blade back by a distance of from about 0.28 to about 0.34 inches.
Claim 5
Dependent Claim
22 words
The knife of claim 1, wherein the hook back forms an angle of at least about 5 degrees relative to the handle.
Claim 6
Dependent Claim
17 words
The knife of claim 1, wherein the finger has a length of at least about 0.2 inches.
Claim 7
Dependent Claim
15 words
The knife of claim 1, wherein the surface of the finger has no sharp edges.
Claim 8
Dependent Claim
19 words
The knife of claim 1, wherein the knife blade has a sharpened edge oppositely disposed from the blade back.
Claim 9
Dependent Claim
25 words
The knife of claim 1, wherein the hook further includes an inner ramp in the region where the slot inner side meets the slot bottom.
Claim 10
Dependent Claim
163 words
A knife, comprising: a handle; a blade having a blade back; and hook means integral with the blade for controllably parting a material, comprising: finger means for guiding the movement of the knife and preventing it from disengaging from the material, the finger means including a finger extending parallel to the adjacent portion of the blade back and having a length of at least about 0.2 inches, finger support means for supporting the finger at a location laterally outwardly displaced from the adjacent portion of the blade back and at an angle to the handle of more than about 5 degrees, the finger, finger support means, and adjacent portion of the blade back together defining a slot, a cutting edge within the slot, and means within the slot for guiding the material to the cutting edge; wherein the cutting edge within the slot is substantially straight and oriented at an angle of about 90 degrees to the adjacent portion of the blade back.
Claim 11
Dependent Claim
163 words
A knife, comprising: a handle; a blade having a blade back; and hook means integral with the blade for controllably parting a material, comprising: finger means for guiding the movement of the knife and preventing it from disengaging from the material, the finger means including a finger extending parallel to the adjacent portion of the blade back and having a length of at least about 0.2 inches, finger support means for supporting the finger at a location laterally outwardly displaced from the adjacent portion of the blade back and at an angle to the handle of more than about 5 degrees, the finger, finger support means, and adjacent portion of the blade back together defining a slot, a cutting edge within the slot, and means within the slot for guiding the material to the cutting edge; wherein the cutting edge within the slot is substantially straight and oriented at an angle of about 90 degrees to the adjacent portion of the blade back.
Claim 12
Dependent Claim
29 words
The knife of claim 9, wherein the finger is laterally separated outwardly from the adjacent portion of the blade back by a distance of at least about 1/4 inch.
Claim 13
Dependent Claim
15 words
The knife of claim 9, wherein the surface of the finger has no sharp edges.
Claim 14
Dependent Claim
23 words
The knife of claim 9, wherein the means for guiding includes a pair of ramps, one adjacent each end of the cutting edge.
Claim 15
Dependent Claim
222 words
A knife, comprising: a handle; a blade having a blade back; and a hook integral with the blade and including a hook body extending laterally outwardly from the blade back side of the knife blade, the outwardly extending margin of the hook body defining a hook back, a finger with no sharp edges, the finger extending rearwardly toward the handle from the outward margin of the hook body, the finger having a length of about O.3 inches and being displaced laterally outwardly from the adjacent portion of the blade back by a distance of from about 0.28 to about 0.34 inches, the finger having a finger back forming a continuous surface with the hook back, the hook back and finger back being oriented at an angle to the handle of about 13.5 degrees, the hook body, the finger, and a portion of the blade back defining a hook slot having a slot outer side, a slot inner side, and a slot bottom, an outer ramp from the slot outer side to the slot bottom, an inner ramp from the slot inner side to the slot bottom, and a sharpened cutting edge at the slot bottom, the cutting edge being substantially straight and at least about 0.10 inches long and being oriented at an angle of about 90 degrees to the hook back.
Claim 16
Dependent Claim
222 words
A knife, comprising: a handle; a blade having a blade back; and a hook integral with the blade and including a hook body extending laterally outwardly from the blade back side of the knife blade, the outwardly extending margin of the hook body defining a hook back, a finger with no sharp edges, the finger extending rearwardly toward the handle from the outward margin of the hook body, the finger having a length of about O.3 inches and being displaced laterally outwardly from the adjacent portion of the blade back by a distance of from about 0.28 to about 0.34 inches, the finger having a finger back forming a continuous surface with the hook back, the hook back and finger back being oriented at an angle to the handle of about 13.5 degrees, the hook body, the finger, and a portion of the blade back defining a hook slot having a slot outer side, a slot inner side, and a slot bottom, an outer ramp from the slot outer side to the slot bottom, an inner ramp from the slot inner side to the slot bottom, and a sharpened cutting edge at the slot bottom, the cutting edge being substantially straight and at least about 0.10 inches long and being oriented at an angle of about 90 degrees to the hook back.
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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) | 1997-10-31 | 1998-05-02 | 1998-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-31 | 2002-05-02 | 2002-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-31 | 2006-05-02 | 2006-11-01 | $7700.00 | Window Closed / Lapsed |