Free-cutting device

Claim 2

A free-cutting device which includes: an internal combustion engine, pipe means having one end connected to said engIne, transmission housing means connected to the other end of said pipe means, transmission means within said housing means, a freecutting tool movable over the ground and drivingly connected to said transmission means, shaft means rotatably journaled in said pipe means and drivingly connecting said engine to said transmission means, handle means adjacent said pipe means, and vibration-damping bearing means interposed between and interconnecting said handle means and said pipe means intermediate said engine and said housing means, said vibrationdamping bearing means comprising two vibration-damping bearings arranged on opposite sides of said pipe means and having their axes substantially parallel to the axis of said shaft means.

Claim 3

A free-cutting device which includes: an internal combustion engine, pipe means having one end connected to said engine, transmission housing means connected to the other end of said pipe means, transmission means within said housing means, a free-cutting tool movable over the ground and drivingly connected to said transmission means, shaft means rotatably journaled in said pipe means and drivingly connecting said engine to said transmission means, handle means adjacent said pipe means, and vibration-damping bearing means interposed between and interconnecting said handle means and said pipe means intermediate said engine and said housing means, said vibration-damping bearing means comprising two vibration-damping bearings arranged on opposite sides of said shaft means and symmetrically with regard to each other while having their axes substantially parallel to the axis of said shaft means, said vibration-damping bearing means also comprising a third vibration-damping bearing having its plane of symmetry extending through said pipe means and having its axis arranged substantially at a right angle with regard to the axes of said first-mentioned two bearings, said third bearing having its axis substantially perpendicular to the axis of rotation of said shaft means.

Claim 4

A free-cutting device which includes: an internal combustion engine, pipe means having one end connected to said engine, transmission housing means connected to the other end of said pipe means, transmission means within said housing means, a free-cutting tool movable over the ground and drivingly connected to said transmission means, shaft means rotatably journaled in said pipe means and drivingly connecting said engine to said transmission means, handle means adjacent said pipe means, and vibration-damping bearing means interposed between and interconnecting said handle means and said pipe means intermediate said engine and said housing means, said vibration-damping bearing means comprising two vibration-damping bearings arranged on opposite sides of said shaft means and symmetrically with regard to each other while having their axes substantially parallel to the axis of said shaft means, said vibration-damping bearing means also comprising a third vibration-damping bearing having its plane of symmetry extending through said pipe means and having its axis arranged substantially at a right angle with regard to the axes of said first-mentioned two bearings, said third bearing having its axis substantially perpendicular to the axis of rotation of said shaft means.

Claim 5

A device according to claim 2, in which the three vibration-damping bearings are located symmetrically through a central plane passing through the axis of said shaft means.

Claim 6

A device according to claim 2, in which the vertical distance of the third bearing from said shaft means is less than the vertical distance of the other two bearings from said shaft means.

Claim 7

A device according to claim 2, which includes a holding element common to and supporting said first-mentioned two vibration-damping bearings, said holding element being detachably connected to said pipe means.

Claim 8

A device according to claim 5, in which said holding element includes a fork-shaped portion for engaging opposite end faces of the respective adjacent vibration-damping bearing.

Claim 9

A free-cutting device which includes: an internal combustion engine, pipe means having one end connected to said engine, transmission housing means connected to the other end of said pipe means, transmission means within said housing means, a free-cutting tool movable over the ground and drivingly connected to said transmission means, shaft means rotatably journaled in said pipe means and drivingly connecting said engine to said transmission means, handle means adjacent said pipe means, and vibration-damping bearing means interposed between and interconnecting said handle means and said pipe means intermediate said engine and said housing means, and a holding member having a top side and a bottom side while having the latter provided with web means for connection of said holding member to said vibration-damping bearing means, said holding member being formed by a trapezoidal holding plate the plane of which defines an acute angle with said shaft means.

Claim 10

A free-cutting device which includes: an internal combustion engine, pipe means having one end connected to said engine, transmission housing means connected to the other end of said pipe means, transmission means within said housing means, a free-cutting tool movable over the ground and drivingly connected to said transmission means, shaft means rotatably journaled in said pipe means and drivingly connecting said engine to said transmission means, handle means adjacent said pipe means, and vibration-damping bearing means interposed between and interconnecting said handle means and said pipe means intermediate said engine and said housing means, and a holding member having a top side and a bottom side while having the latter provided with web means for connection of said holding member to said vibration-damping bearing means, said holding member being formed by a trapezoidal holding plate the plane of which defines an acute angle with said shaft means.

Claim 11

A device according to claim 7, in which said vibration-damping bearing means comprise a plurality of vibration-damping bearings, each of said bearings being formed by two bearing sections separated from each other and connected to said holding member.

Claim 12

A device according to claim 7, in which said vibration-damping bearing means comprise a plurality of vibration-damping bearings, each of said bearings forming a body of revolution and having its end faces designed as connecting surfaces for connection to said holding plate, said end faces being substantially perpendicular to the central axis of the respective pertaining bearing.

Claim 13

A device according to claim 7, in which said vibration-damping bearing means comprise a plurality of vibration-damping bearings, each of said bearings being formed by two bearing sections separated from each other and connected to said holding member located therebetween for mounting said sections.

Claim 14

A device according to claim 7, in which said handle means includes a handle bar protruding on both sides beyond said holding member and also comprises handles arranged at the ends of the handle bar, said handle bar being detachably connected to said holding member.

Claim 15

A device according to claim 11, in which said handle means is connected to that end portion of said holding member which is adjacent said engine.

Claim 16

A free-cutting device which includes: an internal combustion engine, pipe means having one end connected to said engine, transmission housing means connected to the other end of said pipe means, transmission means within said housing means, a free-cutting tool movable over the ground and drivingly connected to said transmission means, shaft means rotatably journaled in said pipe means and drivingly connecting said engine to said transmission means, handle means adjacent said pipe means, and at least two vibration-damping bearing means provided approximately longitudinally of pipe means direction and spaced serially one after another as interposed between and interconnecting said handle means and said pipe means intermediate said engine and said housing means, at least one of said vibration-damping bearing means having an axis itself extending transverse to longitudinal direction of said pipe means.

Claim 17

A free-cutting device which includes: an internal combustion engine, pipe means having one end connected to said engine, transmission housing means connected to the other end of said pipe means, transmission means within said housing means, a free-cutting tool movable over the ground and drivingly connected to said transmission means, shaft means rotatably journaled in said pipe means and drivingly connecting said engine to said transmission means, handle means adjacent said pipe means, and at least two vibration-damping bearing means provided approximately longitudinally of pipe means direction and spaced serially one after another as interposed between and interconnecting said handle means and said pipe means intermediate said engine and said housing means, at least one of said vibration-damping bearing means having an axis itself extending transverse to longitudinal direction of said pipe means.

Claim 18

A device according to claim 13, in which at least one vibration-damping bearing means extends on both sides of a plane that passes through said pipe means axially and vertically thereof.

Claim 19

A device according to claim 13, in which said vibration-damping bearing means are provided symmetrically with respect to a plane that passes through said pipe means axially and vertically thereof.

Claim 20

A device according to claim 13, in which at least one vibration-damping bearing means is provided directly above said pipe means.

Claim 21

A device according to claim 13, in which at least two vibration-damping bearing means have identical spacing from the axis of said pipe means.

Claim 22

A device according to claim 13, in which said bearing means comprise at least two vibration-damping bearings each having respective axes thereof arranged substantially at a right angle with regard to each other.

Claim 23

A device according to claim 13, in which said vibration-damping bearing means comprise two vibration-damping bearings which are located so that their common plane of symmetry extends at a right angle to the longitudinal axis of said pipe means.

Claim 24

A device according to claim 13, in which said vibration-damping bearing means comprise a plurality of vibration-damping bearings comprising connecting surfaces which are so arranged that at least the connecting surfaces of one of said bearings are perpendicular to the axis of said pipe means.

Claim 25

A device according to claim 13, in which vibration-damping bearing means are located directly above said shaft means and said pipe means surrounding the same.

Claim 26

A device according to claim 13, which comprises holding elements supporting said vibration-damping bearing means, said holding elements being detachably connected to said pipe means.

Claim 27

A device according to claim 13, which comprises one holding element arranged in common for at least two vibration-damping means.

Claim 28

A device according to claim 13, in which said vibration-damping bearing means include rubber bodies.

Claim 29

A device according to claim 13, in which said vibration-damping bearing means comprise a plurality of identical vibration-damping bearings.

Claim 30

A device according to claim 13, in which said vibration-damping bearing means comprise two vibration-damping bearings which are located one behind the other when viewed in the longitudinal direction of said pipe means.

Claim 31

A device according to claim 26, in which said bearings have end faces that are located substantially at a right angle with regard to each other.