Dynamometer
AssigneeGalbraith Engineering Pty. Ltd.
InventorPeter A. Galbraith
Life of this patent
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Abstract
An absorption dynamometer includes a rotor (12) and restrained stator means (14), and in use of which the rotor energy is substantially dissipated as heat in the stator means. A cooling arrangement (16) for the stator means comprises passage means (62,63) for coolant fluid. This passage means extends, at least in part spirally, from a fluid intake port (70) at or adjacent a first end of the stator means to an oultet outlet port (71) at or adjacent a second end of the stator means. Also disclosed is a vibration absorption means (25) and flexible coupler means (84,85) to dampen the vibrations of a power tool being tested.
Claims14
An absorption dynamometer, comprising:
- a rotor rotatable about a longitudinal axis and restrained stator means, in use of which the rotor energy is substantially dissipated as heat in the stator means,
- a cooling arrangement for the stator means comprising passage means for coolant fluid, said passage means extending, at least in part helically with a plurality of revolutions about said axis sufficient to effectively cool the stator means, from a fluid intake port to an outlet port wherein said passage means includes one or more portions which all fluid flowing in the passage means must traverse, which portions of the passage means together effectively cool the major proportion of the axial length of the stator means.
Dependencies are inferred from the claim text.