Patents by Inventor Petrus C. H. Janssen

Petrus C. H. Janssen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6142863
    Abstract: This invention relates to both a method and an apparatus for placing slaughtered poultry on a carrier and a method and an apparatus for subsequently removing the skin from the slaughtered poultry on the carrier.
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: November 7, 2000
    Assignee: Stork PMT B.V.
    Inventors: Petrus C. H. Janssen, Adrianus J. van den Nieuwelaar
  • Patent number: 6007416
    Abstract: In a method and an apparatus for automatic removal of at least an inner fillet from slaughtered poultry or a part thereof before the connection between the inner fillets and the carcass is broken, a separation is made in the opening bounded by the clavicle and the breastbone, whereupon the inner fillets are at least partly scraped off from the carcass. In another method of filleting, the canalis triosseus is cut open in the shoulder joint, whereupon at least the inner fillets are pulled free from the carcass with the aid of the humerus. Previously, the connection between the membrane of the inner fillets and the breastbone in the region of the coracoideum is broken. For placing a front half of a slaughtered bird on a carrier, a bird is hung by its legs on a suspension element, whereupon the front half and the back half are separated from one another except for a rear connection. The front half is thereupon placed on the carrier and the rear connection is broken.
    Type: Grant
    Filed: July 19, 1995
    Date of Patent: December 28, 1999
    Assignee: Stork PMT B.V.
    Inventors: Petrus C. H. Janssen, Adrianus J. van den Nieuwelaar
  • Patent number: 5505657
    Abstract: Device for conveying slaughtered animals or a part thereof, having a number of leg carriers, each of which is connected by way of a rotatable connecting element to a trolley of a conveyor, and runs through a track past at least one processing station. Each leg carrier is disposed eccentrically relative to the vertical axis of rotation of the corresponding connecting element.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: April 9, 1996
    Assignee: Stork PMT B.V.
    Inventors: Petrus C. H. Janssen, Cornelis J. Janssen, Eric H. W. Peters, Adrianus J. van den Nieuwelaar
  • Patent number: 5312291
    Abstract: A method and device for filleting the body of a slaughtered bird, or a part thereof, the method having the following steps: making incisions in the shoulder joints while the connection between the muscles to be filleted and their wing bones remains intact; tearing away a fillet from the ribs by exerting a force which acts upon the wing concerned and is directed essentially away from the ribs; and breaking the connection between fillet and wing bone. The bird, or a part thereof, is fixed on a supporting element which is movable along a predetermined path at a predetermined speed, and which can be tilted from a neutral position, in which the shoulder side of the bird is facing upwards, to a breast position, in which the breast side of the bird is facing upwards, and to a back position in which the back of the bird is facing upwards.
    Type: Grant
    Filed: January 8, 1993
    Date of Patent: May 17, 1994
    Assignee: Stork PMT B.V.
    Inventors: Adrianus J. van den Nieuwelaar, Petrus C. H. Janssen
  • Patent number: 5176563
    Abstract: A method and device for separating the legs from a carcass of slaughtered poultry in which the carcass is positioned on the rear side, legs pointing upwards, relative to the cutters, a groin incision is made between each leg and the carcass at the side of the leg facing the carcass, and each leg is dislocated at the hip joint by pressing out each leg relative to the carcass. After dislocating the hip, a caudal hip incision is made in the remaining tissue connection between each leg and the carcass, after the two parts of each dislocated hip joint are moved a certain distance apart by applying a force acting on the hip joint ball of each hip joint, pushing the hip joint ball away from the hip joint socket prior to making the hip incision, and the legs are pulled off the carcass, essentially in the lengthwise direction of the back bone and away from the tail part.
    Type: Grant
    Filed: May 30, 1991
    Date of Patent: January 5, 1993
    Assignee: Stork PMT B.V.
    Inventors: Adrianus J. van den Nieuwelaar, Petrus C. H. Janssen
  • Patent number: 5037351
    Abstract: A method of weighing poultry includes: conveying a plurality of birds which are closely adjacent to each other toward a weighing station; disentangling the wings of the birds from each other and separating the birds from each other by turning the birds; and then, while the wings of the birds are disentangled and while the birds are separated from each other, weighing the birds at the weighing station. The birds are suspended by their legs from suspension hooks and the suspension hooks are suspended from a conveyor suspension track.
    Type: Grant
    Filed: August 23, 1990
    Date of Patent: August 6, 1991
    Assignee: Stork PMT B.V.
    Inventors: Adrianus J. Van Den Nieuwelaar, Petrus C. H. Janssen
  • Patent number: 4972549
    Abstract: Process for weighing poultry which is conveyed suspended by the legs from suspension hooks directed in the direction of conveyance through a conveyor suspension track past a weighing station, prior to reaching the weighing position each of the hooks is turned through such an angle that during the weighing no contact between the birds, which would adversely affect weighing, occurs with conveyor hook especially suited for carrying out this process.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: November 27, 1990
    Assignee: Stork PMT B. V.
    Inventors: Adrianus J. Van Den Nieuwelaar, Petrus C. H. Janssen
  • Patent number: 4958694
    Abstract: Weighing device for articles such as small slaughtered animals which are carried along a transport track and of which this movement is temporarily interrupted during determination of the weight, comprising a moveable member which is loaded by the weight, acts upon a pressure transducer and cooperates with controllable locking means.
    Type: Grant
    Filed: December 1, 1988
    Date of Patent: September 25, 1990
    Assignee: Stork PMT B.V.
    Inventors: Adrianus J. van den Nieuwelaar, Petrus C. H. Janssen
  • Patent number: 4928351
    Abstract: Method for operating an installation for dividing up slaughtered poultry in a number of processing stations along a transport track in which the displacement of the delivered birds or parts thereof is temporarily interrupted at the location of an observation station, while maintaining the movement of the transport track.
    Type: Grant
    Filed: December 1, 1988
    Date of Patent: May 29, 1990
    Assignee: Stork PMT B.V.
    Inventors: Adrianus J. van den Nieuwelaar, Petrus C. H. Janssen
  • Patent number: 4815168
    Abstract: Method and apparatus for dividing up the carcass of a slaughtered bird, the carcass being suspended by its feet from a transport means, being transported with the breast to the front in the transport direction and, during transport thereof, being cut through by means of a cutting operation, the carcass being brought, before and during the cutting operation, into an oblique position relative to the transport direction such that the feet are placed in front of the remainder of the carcass, while an edge section, forming a boundry with the breast, of the rear opening, present between the feet of the carcass, is lowered from between the feet, and the cutting operation is carried out in a transverse direction in a plane extending between the lowered edge section and the thighs, so that the carcass is divided up into a rear half comprising the feet, thigh portions corresponding to the feet and a back portion, and a front half comprising a breast portion and a main portion of the back portion of the carcass, the fro
    Type: Grant
    Filed: November 4, 1987
    Date of Patent: March 28, 1989
    Assignee: Stork PMT B.V.
    Inventors: Josephus A. van den Nieuwelaar, Petrus C. H. Janssen
  • Patent number: 4766644
    Abstract: Device for supporting a carcass or part of a carcass of slaughtered poultry, having a first and a second support member having surface parts facing one another, in which one of the support members is so constructed that it is suitable for penetrating into connective tissue and/or flesh parts of the carcass.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: August 30, 1988
    Assignee: Stork PMT B.V.
    Inventors: Josephus A. van den Nieuwelaar, Petrus C. H. Janssen
  • Patent number: 4765028
    Abstract: A device for the ejection of a poultry carcass hanging on a conveyor track with two oblong outer gudies and a guide surface opposite them for confining a leg of a bird in which of two guides of the same type (inner or outer guides) part of this guide, greater in length than the diameter of the leg, is formed by a supporting element which is movable transversely to the guide, said supporting elements lying opposite each other and being joined together in such a way that they can move together in the same direction.
    Type: Grant
    Filed: May 6, 1987
    Date of Patent: August 23, 1988
    Assignee: Stork PMT B.V.
    Inventors: Josephus A. van de Nieuwelaar, Petrus C. H. Janssen
  • Patent number: 4723339
    Abstract: A device for removing the breast skin from a poultry carcass which is conveyed breast first and hanging by the legs from a conveyor track, comprising a V-shaped guide breast guide disposed below the conveyor track and being open towards the conveyor track, and two V-shaped breast skin separating elements above said face, with the points directed against the direction of conveyance, with at the top rear end of each of the separating elements an oblong-shaped cutting element outside the plane thereof, facing the guide face and with a cutting face directed against the direction of conveyance; followed by at least one set of pinch rollers, situated under the guide face, driven in counter-rotation, and provided with intermeshing longitudinal toothing.
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: February 9, 1988
    Assignee: Stork Pmt B.V.
    Inventors: Josephus A. van de Nieuwelaar, Petrus C. H. Janssen