A system and method of processing bone is disclosed. A tissue separator is utilized to separate tissue comprising at least one of muscle, periosteum and connective tissue from bone in a safe, sterile and efficient manner. In one aspect, the particle reducer can include an impeller positioned with respect to a cutting surface on a drum. At least one of the impeller and the drum is rotated by a power source such that harvested tissue frictionally engages the cutting surface. In another aspect, a source of pressurized fluid can be directed at tissue to separate bone from non-bone tissue.

A method of treating a meat-substance containing a bone structure. The bone marrow is coagulated with microwaves generated by a solid-state RF energy source. The microwave heating may be carried out prior to a heat treatment of the meat-substance and/or may be carried out after slaughtering and before the fresh slaughtered meat-substance is frozen.

A bone-meat separator includes a chassis, a driving mechanism, a transmission shaft, a spiral shaft, a feed hopper, a pressurization portion and a bone-meat separation portion. In this design, a separation spiral shaft portion is a conical spiral shaft; the bone-meat separation portion is a conical component coaxially sheathed on the periphery of the separation spiral shaft portion, and an inner wall of the bone-meat separation portion is in clearance fit with an outer wall of the separation spiral shaft portion. With regard to the bone-meat separator, since the inner wall of the bone-meat separation portion and the outer wall of the spiral shaft are always in a stable clearance fit state, the service life is improved.

A blade housing assembly for a power operated rotary knife including a split blade housing and a cam mechanism actuatable for changing a blade housing diameter between a blade supporting position and a blade changing position. The blade housing including an annular blade support section, a mounting section and a radially extending split extending through the mounting section and an inner wall of the blade support section and defining a split distance between first and second circumferential ends of the inner wall. The mounting section includes a first body portion and a second body portion on opposite sides of the radially extending split. The cam mechanism includes a cam plate bridging the first and second body portions and a cam member rotatably supported by the cam plate. The cam member is rotatable between a first, closed position and a second, open position to change the blade housing diameter.

A bone-meat separator includes a chassis, a driving mechanism, a transmission shaft, a spiral shaft, a feed hopper, a pressurization portion and a bone-meat separation portion. In this design, a separation spiral shaft portion is a conical spiral shaft; the bone-meat separation portion is a conical component coaxially sheathed on the periphery of the separation spiral shaft portion, and an inner wall of the bone-meat separation portion is in clearance fit with an outer wall of the separation spiral shaft portion. With regard to the bone-meat separator, since the inner wall of the bone-meat separation portion and the outer wall of the spiral shaft are always in a stable clearance fit state, the service life is improved.

The invention relates to an apparatus for cutting free the flank bones of decapitated, slaughtered fish with opened abdominal cavities which are transported on transport saddles as supporting bodies for securely receiving the fish in their abdominal cavities, comprising an upper bones guide, a lower bones guide and a separating assembly for releasing fish fillets from the flank bones, wherein the separating assembly, which can be brought from a standby position into a working position and vice versa, comprises a separating means having cutting edges and with a corresponding counter-surface, which is characterised in that a covering element, for covering regions of the cutting edge of the separating means located in the effective region of the separating means inside the fish, is assigned to the separating means, and the covering element is designed and configured such that it can be automatically adjusted with respect to its position in relation to the separating means. The invention further relates to a filleting machine with such an apparatus.

The invention relates to an apparatus for cutting free the flank bones of decapitated, slaughtered fish with opened abdominal cavities which are transported on transport saddles as supporting bodies for securely receiving the fish in their abdominal cavities, comprising an upper bones guide, a lower bones guide and a separating assembly for releasing fish fillets from the flank bones, wherein the separating assembly, which can be brought from a standby position into a working position and vice versa, comprises a separating means having cutting edges and with a corresponding counter-surface, which is characterised in that a covering element, for covering regions of the cutting edge of the separating means located in the effective region of the separating means inside the fish, is assigned to the separating means, and the covering element is designed and configured such that it can be automatically adjusted with respect to its position in relation to the separating means. The invention further relates to a filleting machine with such an apparatus.

A powered rotary knife includes a handle, a blade housing, an annular blade, and a blade bushing for rotatably mounting the blade within the housing. The blade housing includes an inner groove that is operable to receive the blade bushing therein. The blade housing and blade bushing are split in order to expand and receive the blade. The blade includes an outer groove that is also operable to receive the blade bushing. Thus, the blade bushing is spaced between the blade housing and blade and rotatably secures the blade within the blade housing.

A powered rotary knife includes a handle, a blade housing, an annular blade, and a blade bushing for rotatably mounting the blade within the housing. The blade housing includes an inner groove that is operable to receive the blade bushing therein. The blade housing and blade bushing are split in order to expand and receive the blade. The blade includes an outer groove that is also operable to receive the blade bushing. Thus, the blade bushing is spaced between the blade housing and blade and rotatably secures the blade within the blade housing.

A blade housing assembly for a power operated rotary knife including a split blade housing and a cam mechanism actuatable for changing a blade housing diameter between a blade supporting position and a blade changing position. The blade housing including an annular blade support section, a mounting section and a radially extending split extending through the mounting section and an inner wall of the blade support section and defining a split distance between first and second circumferential ends of the inner wall. The mounting section includes a first body portion and a second body portion on opposite sides of the radially extending split. The cam mechanism includes a cam plate bridging the first and second body portions and a cam member rotatably supported by the cam plate. The cam member is rotatable between a first, closed position and a second, open position to change the blade housing diameter.