US3765089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knife with adjustable blade
Assignee: Nippon Tenshashi KK
•
Filing: 1971-06-16
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Granted: 1973-10-16
•
Expires: 1991-06-16
Abstract
Abstract This knife with adjustable blade consists of a handle in which an elongated strip blade is slidably mounted and can be ejected from one end of the handle by means of a manually slidable ejector which is releasably attached to one end of the blade strip. The blade strip is scored at an angle at spaced intervals so that the used or dull end of the blade strip can be broken off and discarded when no longer useful. The blade is also held in extended position by means of a set screw.
Inventors
- 👤 Y Ibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:58
CPC Classifications
B; B26; B26B; B26B5/00; B26B5/001; B26B5/002
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
121 words
A knife with adjustable blade consisting of a handle, said handle having a groove therein extending the length thereof, and a blade slidably mounted in said groove, said handle having a slot therein extending into said groove, an ejector slidably mounted in said slot and projecting into said groove, a stud on the ejector fitting into the blade to slide the blade longitudinally in the handle, and a spring finger on the ejector pressing the ejector upwardly to raise the blade in the groove, a sheath positioned on one side of the handle and enclosing said groove, a rivet securing one end of the sheath to the handle, and a flange securing the other end of the sheath to the handle.
Claim 2
Dependent Claim
121 words
A knife with adjustable blade consisting of a handle, said handle having a groove therein extending the length thereof, and a blade slidably mounted in said groove, said handle having a slot therein extending into said groove, an ejector slidably mounted in said slot and projecting into said groove, a stud on the ejector fitting into the blade to slide the blade longitudinally in the handle, and a spring finger on the ejector pressing the ejector upwardly to raise the blade in the groove, a sheath positioned on one side of the handle and enclosing said groove, a rivet securing one end of the sheath to the handle, and a flange securing the other end of the sheath to the handle.
Claim 3
Dependent Claim
71 words
A knife with adjustable blade as recited in claim 1, a sheath positioned on one side of the handle and enclosing said groove, a rivet securing one end of the sheath to the handle, a flange securing the other end of the sheath to the handle, and said rivet and set screw being positioned at opposite ends of the sheath to hold the sheath pressed against the handle and the blade.
Claim 4
Dependent Claim
60 words
A knife with adjustable blade as recited in claim 1, a sheath positioned on one side of the handle and enclosing said groove, a rivet securing one end of the sheath to the handle, a flange securing the other end of the sheath to the handle, the upper edge of said sheath being flat and straight to form a ruler.
References Cited (Backward Citations)
US1960130A
Cited
US2051199A
Cited
US2105663A
Cited
US2284168A
Cited
US3192624A
Cited
DE1936196A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |