US4367669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cutting angular profiles applicable to hydraulic shears
Assignee: MAQUINARIA GEKA SL PORLIGONO INDUSTRIAL DE UGALDETXO- OYARZUN GUIPUZCOA
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Filing: 1980-12-04
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Granted: 1983-01-11
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Expires: 2000-12-04
Abstract
Abstract A knife cutter for the angular profiles includes a plate, generally triangular in shape, the posterior surface of which has a prismatic projection corresponding to one of the sides thereof. The side and the prismatic projection are arched in order to adjust in a complementary recess made for such purpose in the front surface of the knife bearing plate. The other two sides of the knife or the cutting edges thereof form a dihedral and are parallel to the cutting edges of a counter-knife.
Inventors
- 👤 Jose A. Lopetegui Legorburu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:50
CPC Classifications
B; B23; B23D; B23D35/00; B23D35/001; B23D23/00; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8771; Y10T83/8772; Y10T83/8798; Y10T83/8812; Y10T83/8814; Y10T83/929; Y10T83/9457; Y10T83/9488
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
173 words
A device for use with hydraulic shears for cutting a member having an angular transverse cross-sectional configuration without deformation or loss of material of such member, said device comprising: a knife bearer plate adapted to be mounted on a shaft for partial reciprocating angular movement thereabout by means of a hydraulic pressure cylinder, said knife bearer plate having in a front surface thereof a curved recess; and a knife plate of generally triangular shape and including two sides as cutting edges forming a dihedral and a curved third side, said knife plate having extending from a rear surface thereof, at a position adjacent said curved third side, a curved prismatic projection, the curve of said third side and the curve of said projection being complementary to the curve of said recess in said knife bearer plate, and said projection being fitted into said recess, thereby enabling relative movement between said knife plate and said knife bearer plate along said complementary curves, said cutting edges extending parallel to respective cutting edges of a counterknife.
Claim 2
Independent Claim
173 words
A device for use with hydraulic shears for cutting a member having an angular transverse cross-sectional configuration without deformation or loss of material of such member, said device comprising: a knife bearer plate adapted to be mounted on a shaft for partial reciprocating angular movement thereabout by means of a hydraulic pressure cylinder, said knife bearer plate having in a front surface thereof a curved recess; and a knife plate of generally triangular shape and including two sides as cutting edges forming a dihedral and a curved third side, said knife plate having extending from a rear surface thereof, at a position adjacent said curved third side, a curved prismatic projection, the curve of said third side and the curve of said projection being complementary to the curve of said recess in said knife bearer plate, and said projection being fitted into said recess, thereby enabling relative movement between said knife plate and said knife bearer plate along said complementary curves, said cutting edges extending parallel to respective cutting edges of a counterknife.
Claim 3
Dependent Claim
75 words
A device as claimed in claim 1, wherein vertices of said knife plate, at areas of juncture of said cutting edges thereof with said third side thereof, are bevelled to form contact surfaces contacting guides fixed to the machine, so that when said knife bearer plate is moved in an angular direction, said knife plate is displaced in a linear direction along a line bisecting the angle between said cutting edges of said knife plate.
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) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |