Patent US3919741A successfully refreshed from Google Patents.
US3919741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for beheading flatfish
Assignee: Nordischer Maschinenbau Rud Baader GmbH and Co KG
•
Filing: 1974-09-06
•
Granted: 1975-11-18
•
Expires: 1994-09-06
Abstract
Abstract Apparatus for beheading flatfish prior to further processing in a filleting machine, the beheading comprising the separation of the head and the belly from the body of the flatfish and the apparatus including means for positioning a flatfish independent of its kind and its size, two revolving cutting knives forming a V-cut, and means for operating the revolving cutting knives.
Inventors
- 👤 Horst Backhaus
- 👤 Heinz Schroder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:39
CPC Classifications
A; A22; A22C; A22C25/00; A22C25/14; A22C25/142
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
185 words
An apparatus for beheading flatfish comprising a horizontal support plate having a V-shaped cutaway portion bordered by two rectilinear edges serving as cutting edges, a pair of cutting knives shearing with said cutting edges, a pair of rotatablymounted shafts mounting said cutting knives at the free ends of said respective shafts, and adjusting means for holding a flatfish centered on said support plate with its head portion in selected position relative to said cutting edges, said pair of shafts being rotatably mounted parallel to the plane of said support plate and being disposed with their axes substantially perpendicular to each other, each of said shafts being rotatable in a direction opposite to each other, said cutting knives having a pair of opposed wings, each of said wings having a cutting edge, said cutting knives being rotated by said shafts in a synchronized movement in which the cutting edge of one cutting knife passes along one cutting edge of the cutaway portion in a shearing action immediately before the cutting edge of the other cutting edge passes along the other cutting edge of the cutaway portion.
Claim 2
Independent Claim
185 words
An apparatus for beheading flatfish comprising a horizontal support plate having a V-shaped cutaway portion bordered by two rectilinear edges serving as cutting edges, a pair of cutting knives shearing with said cutting edges, a pair of rotatablymounted shafts mounting said cutting knives at the free ends of said respective shafts, and adjusting means for holding a flatfish centered on said support plate with its head portion in selected position relative to said cutting edges, said pair of shafts being rotatably mounted parallel to the plane of said support plate and being disposed with their axes substantially perpendicular to each other, each of said shafts being rotatable in a direction opposite to each other, said cutting knives having a pair of opposed wings, each of said wings having a cutting edge, said cutting knives being rotated by said shafts in a synchronized movement in which the cutting edge of one cutting knife passes along one cutting edge of the cutaway portion in a shearing action immediately before the cutting edge of the other cutting edge passes along the other cutting edge of the cutaway portion.
Claim 3
Dependent Claim
85 words
An apparatus according to claim 1 in which one of said cutting knives has a projecting lug at the end of each of its wings, and said support plate has a slot parallel to and continuous with its cutting edge which coacts with said one cutting knife, said projecting lugs crossing the opposite cutting edge of said support plate when the knives are rotated, and penetrating through said slot whereby said cutting knives provide an uninterrupted V-shaped cut in the head of said mounted flatfish.
Claim 4
Dependent Claim
55 words
An apparatus according to claim 1 in which said adjusting means includes a V-shaped head guide movably mounted above said cutaway portion and body centering means operatively coupled with said head guide for synchronous movement therewith between a retracted position and an operative position in which it holds the fish centered On said support plate.
Claim 5
Dependent Claim
51 words
An apparatus according to claim 3 which also includes a head support disposed in the plane of said support plate, and mounted for slidable movement into and out of the cutaway portion of said support plate, and guide means arranged above said head support on both sides of said head guide.
Claim 6
Dependent Claim
24 words
An apparatus according to claim 4 in which said guide means comprises a pair of guiding strips and a bridge connecting said guiding strips.
References Cited (Backward Citations)
US2479010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |