US4060893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutter
Assignee: Daisho KK
•
Filing: 1976-02-13
•
Granted: 1977-12-06
•
Expires: 1996-02-13
Abstract
Abstract A cutter for cutting a sheet-like material into a circular form, comprising a frame member including a sidewall portion for holding a sheet-like material to be cut against a surface of a flat body and defining a gap between the portion and the surface, a rotary member pivotally mounted on the frame member and capable of rotation within the gap, a handle for driving the handle, and a knife mounted on the rotary member and having a cutting edge which at least extends to the surface of the flat body.
Inventors
- 👤 Haruo Matsuura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:08
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/04; B23B51/05; B26; B26F; B26F1/00; B26F1/38; B26F1/3846; G; G03; G03D; G03D15/00; G03D15/04; G03D15/043; Y; Y10; Y10T; Y10T83/00; Y10T83/748; Y10T83/7487; Y10T83/7493; Y10T83/7513; Y10T83/7567; Y10T83/768; Y10T83/7755; Y10T83/7788; Y10T83/7872
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
190 words
A sheet cutting device for cutting sheets into a circular form, comprising a base having a flat upper base surface and having a bracket upstanding from the surface; a frame pivoted to the bracket for angular pivoting movements between a raised position and a lower position, the frame having a sidewall secured thereto and the sidewall having a pad thereon at a free edge of the sidewall remote from the frame for engaging, in the lower position of the frame, a sheet lying on the base surface to determine the lower position of the frame, to hold the sheet, and to provide a gap between the base surface and the frame, the sidewall and pad being disposed to surround the gap; and a rotor rotatably mounted on the frame for rotation in the gap, having a handle for effecting the rotation, and having a cutting edge extending to the base surface when the frame, with the rotor and the knife thereon, is in the lower position, for cutting the sheet into a circular form by the rotation of the rotor and knife relative to the sheet held by the pad.
Claim 2
Dependent Claim
190 words
A sheet cutting device for cutting sheets into a circular form, comprising a base having a flat upper base surface and having a bracket upstanding from the surface; a frame pivoted to the bracket for angular pivoting movements between a raised position and a lower position, the frame having a sidewall secured thereto and the sidewall having a pad thereon at a free edge of the sidewall remote from the frame for engaging, in the lower position of the frame, a sheet lying on the base surface to determine the lower position of the frame, to hold the sheet, and to provide a gap between the base surface and the frame, the sidewall and pad being disposed to surround the gap; and a rotor rotatably mounted on the frame for rotation in the gap, having a handle for effecting the rotation, and having a cutting edge extending to the base surface when the frame, with the rotor and the knife thereon, is in the lower position, for cutting the sheet into a circular form by the rotation of the rotor and knife relative to the sheet held by the pad.
Claim 3
Dependent Claim
42 words
A device according to claim 1 including knife mounting means for effecting the mounting of the knife of the rotor so as to permit displacement of the knife, radially of the rotor, for cutting the sheet into circular forms of different diameters.
Claim 4
Dependent Claim
50 words
A device according to claim 2 in which the knife mounting means comprises a member supporting the knife and a bolt held by the member, the rotor having a plurality of threaded holes, at positions differently radially spaced from a center of the rotor's rotation, for engagement by the bolt.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-05 | 1981-06-06 | 1981-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-05 | 1985-06-06 | 1985-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-05 | 1989-06-06 | 1989-12-06 | $7700.00 | Window Closed / Lapsed |