Air driven boning and trimming knives

Claim 2

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said structure and gear teeth adjacent its other end, a first gear rotatably supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a fluid pressure activated rotary motor comprising a rotor rotatably supported in a housing stationary in said handle, external gear teeth on an extension of said rotor projecting towards said blade, a member rotatably supported in said handle intermediate said motor and said first gear, a tubular member stationary in said handle intermediate said motor and said first gear provided with internal gear teeth, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear, and valve means in said handle for controlling the flow of fluid to said motor.

Claim 3

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said structure and gear teeth adjacent its other end, a first gear rotatablY supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a tubular member detachably fixed in the end of said handle opposite to said blade and having internal gear teeth adjacent its other end, an air activated rotary motor comprising a rotor rotatably supported in a housing stationary in said tubular member, external gear teeth on an extension of said rotor projecting towards said blade, a member rotatably supported in said first tubular member and located between said motor and said first gear, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear and valve means in said tubular member for controlling the flow of fluid to said motor.

Claim 4

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said structure and gear teeth adjacent its other end, a first gear rotatablY supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a tubular member detachably fixed in the end of said handle opposite to said blade and having internal gear teeth adjacent its other end, an air activated rotary motor comprising a rotor rotatably supported in a housing stationary in said tubular member, external gear teeth on an extension of said rotor projecting towards said blade, a member rotatably supported in said first tubular member and located between said motor and said first gear, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear and valve means in said tubular member for controlling the flow of fluid to said motor.

Claim 5

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said structure and gear teeth adjacent its other end, a first gear rotatably supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a first tubular member detachably fixed in the end of said handle opposite said blade, an air activated rotary motor comprising a rotor rotatably supported in a housing stationary in said tubular member, external gear teeth on an extension of said rotor projecting towards said blade, a tubular assembly detachably fixed to the end of said tubular member nearest to said first gear provided with internal gear teeth, a member rotatably supported in said tubular assembly and located intermediate said motor and said first gear, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear, and valve means in said tubular member for controlling the flow of air to said motor.

Claim 6

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said structure and gear teeth adjacent its other end, a first gear rotatably supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a first tubular member detachably fixed in the end of said handle opposite said blade, an air activated rotary motor comprising a rotor rotatably supported in a housing stationary in said tubular member, external gear teeth on an extension of said rotor projecting towards said blade, a tubular assembly detachably fixed to the end of said tubular member nearest to said first gear provided with internal gear teeth, a member rotatably supported in said tubular assembly and located intermediate said motor and said first gear, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear, and valve means in said tubular member for controlling the flow of air to said motor.

Claim 7

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said structure and gear teeth adjacent its other end, a first gear rotatably supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a first tubular member detachably fixed in the end of said handle opposite said blade, an air activated rotary motor comprising a rotor rotatably supported in a housing stationary in said first tubular member, external gear teeth on an extension of said rotor projecting towards said blade, a member rotatably supported in said handle intermediate said motor and said first gear, a second tubular member detachably fixed to the end of said first tubular member and provided with internal gear teeth, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear, and valve means in said first tubular member for controlling the flow of air to said motor.

Claim 8

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said structure and gear teeth adjacent its other end, a first gear rotatably supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a first tubular member detachably fixed in the end of said handle opposite said blade, an air activated rotary motor comprising a rotor rotatably supported in a housing stationary in said first tubular member, external gear teeth on an extension of said rotor projecting towards said blade, a member rotatably supported in said handle intermediate said motor and said first gear, a second tubular member detachably fixed to the end of said first tubular member and provided with internal gear teeth, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear, and valve means in said first tubular member for controlling the flow of air to said motor.

Claim 9

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said structure and gear teeth adjacent its other end, a first gear rotatably supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a fluid pressure activated rotary motor comprising a rotor rotatably supported in a housing stationary in said handle, external gear teeth on an extension of said rotor projecting towards said blade, a member rotatably supported in said handle intermEdiate said motor and said first gear, a tubular member stationary in said handle intermediate said motor and said first gear provided with internal gear teeth, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear, a valve biased to closed position in said handle for controlling the flow of fluid to said motor, a throttle member connected to said handle for opening said valve, a sleeve rotatable on said handle and biased towards one position, and interlocking means between said valve and said sleeve preventing opening of said valve when said sleeve is in said one position.

Claim 10

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said structure and gear teeth adjacent its other end, a first gear rotatably supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a fluid pressure activated rotary motor comprising a rotor rotatably supported in a housing stationary in said handle, external gear teeth on an extension of said rotor projecting towards said blade, a member rotatably supported in said handle intermEdiate said motor and said first gear, a tubular member stationary in said handle intermediate said motor and said first gear provided with internal gear teeth, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear, a valve biased to closed position in said handle for controlling the flow of fluid to said motor, a throttle member connected to said handle for opening said valve, a sleeve rotatable on said handle and biased towards one position, and interlocking means between said valve and said sleeve preventing opening of said valve when said sleeve is in said one position.

Claim 11

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said structure and gear teeth adjacent its other end, a first gear rotatably supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a tubular member detachably fixed in the end of said handle opposite to said blade and having internal gear teeth adjacent its other end, an air activated rotary motor comprising a rotor rotatably supported in a housing stationary in said tubular member, external gear teeth on an extension of said rotor projecting towards said blade, a member rotatably supported in said first tubular member and located between said motor and said first gear, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear, a valve biased to closed position in said tubular member for controlling the flow of fluid to said motor, a throttle member connected with said handle for opening said valve, a sleeve rotatable on said handle and biased towards one position, and interlocking means between said valve and said sleeve preventing opening of said valve when said sleeve is in said one position.

Claim 12

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said structure and gear teeth adjacent its other end, a first gear rotatably supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a tubular member detachably fixed in the end of said handle opposite to said blade and having internal gear teeth adjacent its other end, an air activated rotary motor comprising a rotor rotatably supported in a housing stationary in said tubular member, external gear teeth on an extension of said rotor projecting towards said blade, a member rotatably supported in said first tubular member and located between said motor and said first gear, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear, a valve biased to closed position in said tubular member for controlling the flow of fluid to said motor, a throttle member connected with said handle for opening said valve, a sleeve rotatable on said handle and biased towards one position, and interlocking means between said valve and said sleeve preventing opening of said valve when said sleeve is in said one position.

Claim 13

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said structure and gear teeth adjacent its other end, a first gear rotatably supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a first tubular member detachably fixed in the end of said handle opposite said blade, an air activated rotary motor comprising a rotor rotatably supported in a housing stationary in said tubular member, external gear teeth on an extension of said rotor projecting towards said blade, a tubular assembly detachably fixed to the end of said tubular member nearest to said first gear provided with internal gear teeth, a member rotatably supported in said tubular assembly and located intermediate said motor and said first gear, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear, a valve biased to closed position in said tubular member for controlling the flow of air to said motor, a throttle member connected to said handle for opening said valve, a sleeve rotatable on said handle and biased towards one position, and interlocking means between said valve and said sleeve preventing opening of said valve when said sleeve is in said one position.

Claim 14

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said structure and gear teeth adjacent its other end, a first gear rotatably supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a first tubular member detachably fixed in the end of said handle opposite said blade, an air activated rotary motor comprising a rotor rotatably supported in a housing stationary in said tubular member, external gear teeth on an extension of said rotor projecting towards said blade, a tubular assembly detachably fixed to the end of said tubular member nearest to said first gear provided with internal gear teeth, a member rotatably supported in said tubular assembly and located intermediate said motor and said first gear, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear, a valve biased to closed position in said tubular member for controlling the flow of air to said motor, a throttle member connected to said handle for opening said valve, a sleeve rotatable on said handle and biased towards one position, and interlocking means between said valve and said sleeve preventing opening of said valve when said sleeve is in said one position.

Claim 15

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said strucutre and gear teeth adjacent its otHer end, a first gear rotatably supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a first tubular member detachably fixed in the end of said handle opposite said blade, an air activated rotary motor comprising a rotor rotatably supported in a housing stationary in said first tubular member, external gear teeth on an extension of said rotor projecting towards said blade, a member rotatably supported in said handle intermediate said motor and said first gear, a second tubular member detachably fixed to the end of said first tubular member and provided with internal gear teeth, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear, a valve biased to closed position in said first tubular member for controlling the flow of air to said motor, a throttle member connected to said handle for opening said valve, a sleeve rotatable on said handle and biased towards one position, interlocking means between said valve and said sleeve preventing opening of said valve when said sleeve is in said one position, and means preventing operation return of said sleeve to said one position while said valve is open.

Claim 16

A hand-manipulated knife comprising a blade supporting structure substantially annular in shape and including a tubular handle projecting from one side thereof, a ring-shaped blade of short axial length rotatably supported in said structure with a cutting edge at one end projecting from one side of said strucutre and gear teeth adjacent its otHer end, a first gear rotatably supported in one end of said handle and in mesh with said gear teeth on said blade for rotating said blade, a first tubular member detachably fixed in the end of said handle opposite said blade, an air activated rotary motor comprising a rotor rotatably supported in a housing stationary in said first tubular member, external gear teeth on an extension of said rotor projecting towards said blade, a member rotatably supported in said handle intermediate said motor and said first gear, a second tubular member detachably fixed to the end of said first tubular member and provided with internal gear teeth, a second gear rotatably supported by said member and in mesh with said external and said internal gear teeth, means connecting said member to said first gear, a valve biased to closed position in said first tubular member for controlling the flow of air to said motor, a throttle member connected to said handle for opening said valve, a sleeve rotatable on said handle and biased towards one position, interlocking means between said valve and said sleeve preventing opening of said valve when said sleeve is in said one position, and means preventing operation return of said sleeve to said one position while said valve is open.