IP Library Patent Application 13760126
Patent Application
App. No. 13/760,126

Induction Reel Motor

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Quick Facts
Patent No.
US None
App. No.
13/760,126
Abstract

An induction motor system for a reel assembly of a turf maintenance vehicle includes a frame and a turf maintenance implement assembly defining a reel assembly movably connected to the frame. The reel assembly includes multiple reel blades defining a reel blade assembly. The reel blade assembly is rotatably connected to a structure of the reel assembly. Multiple induction coils are connected to the structure of the reel assembly and energized to create a magnetic field through the reel blades of the reel blade assembly thereby inducing rotation of the reel blade assembly.

Claims (39)

1 . An induction motor system for a reel assembly, comprising:

a reel blade assembly including multiple reel blades, the reel blade assembly rotatably connected to a structure of a reel assembly; and

at least one linear induction coil connected to the reel assembly energized to create a magnetic field through the reel blades thereby inducing rotation of the reel blade assembly.

2 . The induction motor system for a reel assembly of claim 1 , wherein the at least one linear induction coil is supported by a cross member of the reel assembly.

3 . The induction motor system for a reel assembly of claim 2 , wherein the at least one linear induction coil operates using 3 phase electrical power.

4 . The induction motor system for a reel assembly of claim 3 , wherein the electrical power is provided to the at least one linear induction coil via a power lead connected to generator of a turf maintenance vehicle.

5 . The induction motor system for a reel assembly of claim 1 , wherein the at least one linear induction coil includes a curved inner surface which mimics a curvature of the reel blades at an outer perimeter of the reel blades.

6 . The induction motor system for a reel assembly of claim 5 , wherein a predetermined spacing is maintained between the inner surface of the at least one linear induction coil and an outer edge of the reel blades defining the outer perimeter.

7 . The induction motor system for a reel assembly of claim 6 , wherein the predetermined spacing is approximately 0.25 in or less.

8 . The induction motor system for a reel assembly of claim 1 , wherein the at least one linear induction coil includes multiple linear induction coils.

9 . The induction motor system for a reel assembly of claim 8 , wherein:

a length of any of the linear induction coils is equal; and

a constant separation distance is maintained between any two successive ones of the multiple linear induction coils.

10 . The induction motor system for a reel assembly of claim 1 , wherein the reel blades are connected to a shaft having opposed first and second bearing ends each passively rotatably seated in a journal member connected to the reel assembly.

11 . An induction motor system for a reel assembly, comprising:

a reel blade assembly including multiple reel blades, the reel blade assembly rotatably connected to a structure of a reel assembly; and

multiple linear induction coils connected to a member of the reel assembly and energized to create a magnetic field through the reel blades thereby inducing rotation of the reel blade assembly; and

each of the induction coils includes a curved inner surface which mimics a curvature of the reel blades at an outer perimeter of the reel blades.

12 . The induction motor system for a reel assembly of claim 11 , wherein the linear induction coils are sequentially rotationally staggered to equal a pitch of the individual reel blades.

13 . The induction motor system for a reel assembly of claim 11 , wherein the linear induction coils are each semi-circular shaped.

14 . The induction motor system for a reel assembly of claim 11 , wherein a spacing is maintained for an entire surface area defined by the curved inner surface with respect to the outer perimeter.

15 . The induction motor system for a reel assembly of claim 11 , wherein a thickness of each of the linear induction coils is substantially constant throughout a length of each of the linear induction coils.

16 . The induction motor system for a reel assembly of claim 11 , wherein each of the linear induction coils defines an arc having an angle determined with respect to a longitudinal axis of the reel blade assembly.

17 . The induction motor system for a reel assembly of claim 11 , wherein the arc of each of the linear induction coils is constant.

18 . An induction motor system for a reel assembly of a turf maintenance vehicle, comprising:

a frame,

a turf maintenance implement assembly defining a reel assembly movably connected to the frame;

the reel assembly including multiple reel blades defining a reel blade assembly, the reel blade assembly rotatably connected to a structure of the reel assembly; and

multiple induction coils connected to the structure of the reel assembly and energized to create a magnetic field through the reel blades of the reel blade assembly thereby inducing rotation of the reel blade assembly.

19 . The induction motor system for a reel assembly of a turf maintenance vehicle of claim 18 , further including a generator providing electrical power to operate the induction coils.

20 . The induction motor system for a reel assembly of a turf maintenance vehicle of claim 19 , wherein the generator produces 3-phase electrical power.

21 . The induction motor system for a reel assembly of a turf maintenance vehicle of claim 18 , wherein each of the induction coils includes a curved inner surface which mimics a curvature of the reel blades at an outer perimeter of the reel blades.

22 . The induction motor system for a reel assembly of a turf maintenance vehicle of claim 21 , further including a predetermined spacing maintained between the inner surface of each of the induction coils and an outer edge of the reel blades defining the outer perimeter.

23 . A method for operating a reel assembly of a turf maintenance vehicle, the reel blade assembly including multiple reel blades, the method comprising:

rotatably connecting the reel blade assembly to a structure of a reel assembly; and

connecting a linear induction coil to the reel assembly; and

energizing the linear induction coil thereby creating a magnetic field through the reel blades to induce rotation of the reel blade assembly.

24 . The method of claim 23 , further comprising connecting the linear induction coil to a generator providing 3-phase electrical power.

25 . The method of claim 23 , further comprising maintaining a predetermined spacing between an inner surface of the linear induction coil and an outer edge of the reel blades.

Assignments (3)
CORRECTIVE ASSIGNMENT TO CORRECT THE THE APPLICATION NUMBER 14/014,918 WAS INCORRECT. PREVIOUSLY RECORDED ON REEL 035567 FRAME 0813. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Jun 18, 2015
From: TEXTRON INC.
To: TEXTRON INNOVATIONS INC.
Reel/Frame 035942/0126 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 5, 2015
From: TEXTRON INC.
To: TEXTRON INNOVATIONS INC.
Reel/Frame 035567/0813 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 6, 2013
From: KOVACS, STEPHEN F., II
To: TEXTRON INC.
Reel/Frame 029760/0918 →