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US 4,062,233 AGranted
Dynamometer
OwnerMelvin Bonomoinventor
Life of this patent
Estimating the term…
Abstract
A dynamometer is provided having a housing mounted to allow at least partial rotational displacement about its longitudinal axis, with a frictional engaging means connected thereto for engaging the external surface of a rotatable drum. This drum, which is mounted within the housing, is coupled to the prime mover so that the power of the prime mover may be determined by measuring the torque transmitted via the engaging means to the housing. Coolant is circulated through the interior of the drum while the drum is rotating within the housing, thus providing a dynamometer which is not only accurate but is easily disassembled for maintenance. The dynamometer also includes a hydraulic brake mechanism which can be regulated without a variation in the flow rate of the working fluid.
Claims19
A dynamometer, comprising:
- a housing mounted to allow at least a partial rotational displacement about its longitudinal axis;
- a drum rotatably mounted within said housing;
- means for coupling said drum to a prime mover positioned exterior to said housing;
- means connected with said housing for frictionally engaging the external surface of said drum;
- means for measuring torque transmitted to said housing by said engaging means upon the rotation of said drum;
- and ;p1 means for circulating a coolant through the interior of said drum while said drum is rotating within said housing, said means for circulating a coolant including a central coolant supply and discharge shaft rigidly secured to said housing and extending axially into said drum, and coolant takeout means extending radially from said central shaft to the inner periphery of said drum, said circulating means thereby also comprising means to transmit torque generated by the prime mover to said housing.
3 more elements
A dynamometer, comprising:
- a housing;
- a drum rotatably mounted within said housing;
- a drive shaft coupling one end of said drum to a prime mover positioned exterior to said housing;
- means connected with said housing for frictionally engaging the external surface of said drum;
- means for measuring torque transmitted to said housing by said engaging means upon the rotation of said drum;
- and
- means for circulating a coolant through the interior of said drum, said circulating means including a central shaft extending through the other end of said drum into the interior thereof, said coolant being supplied to and discharged from the interior of said drum through said central shaft.
4 more elements
A dynamometer, comprising:
- a housing mounted to allow at least a partial rotational displacement about its longitudinal axis;
- a drum rotatably mounted within said housing;
- a drive shaft extending through said housing coupling a prime mover to said drum;
- means connected to said housing for frictionally engaging the external surface of said drum whereby said engaging means transmits torque to said housing;
- means for circulating a coolant through the interior of said drum while said drum is rotating within said housing;
- means for shearing at least a portion of said coolant as it circulates through said drum to transmit torque from said drum to said housing;
- and
- means for measuring torque transmitted to said housing by said engaging means or said shearing means.
5 more elements
A dynamometer comprising:
- a shaft mounted to accommodate at least partial rotational displacement about its longitudinal axis;
- a drum rotatably mounted on said shaft;
- means for coupling said drum to a prime mover;
- means for circulating a coolant through said drum;
- means for shearing at least a portion of said coolant to transmit torque generated by said prime mover to said shaft, said shearing means including a rotor which rotates with said drum, a stator slidably mounted on said shaft to allow axial displacement thereof relative to said rotor but not radial displacement thereof relative to said shaft, and coolant charging ports which open into the interior of said drum between said rotor and said stator;
- means for measuring torque transmitted to said shaft by said shearing means;
- and
- means disposed outside said drum for regulating the extent to which said portion of said coolant is sheared.
5 more elements
A dynamometer comprising:
- a first shaft mounted to accommodate at least partial rotational displacement about its longitudinal axis;
- a drum mounted on said first shaft;
- means comprising a drive shaft for coupling a prime mover to a rotor mounted within said drum;
- a stator rigidly connected to said first shaft adjacent said rotor within said drum;
- means for circulating a coolant through said drum and including coolant charging parts which open into the interior of said drum between said rotor and stator, whereby upon rotation of said drive shaft said coolant is sheared by said rotor and stator;
- means disposed outside said drum for axially displacing either said rotor or said stator, whereby the extent to which said coolant is sheared may be regulated;
- and
- means for measuring the torque transmitted to said first shaft by virtue of the shearing of said coolant.
5 more elements
Dependencies are inferred from the claim text.