Transport torque and tension measurement device
AssigneeMinnesota Mining and Manufacturing Company
InventorArden Ronald Thompson
Life of this patent
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Abstract
A device for measuring transport torques and tensions of magnetic video tape record/reproduce units includes a cartridge with a housing that is preferably similar to that of a normal video tape cartridge. Two reels are rotatably disposed in the housing and are provided with torque and tension measuring components in order that measurement of the torque and tensions of a record/reproduce unit may be readily performed upon loading the cartridge in the unit.
Claims3
A cartridge for measuring rewind torque and brake tensions of a video magnetic tape record/reproduce unit and having a housing in which at least a first reel is rotatably disposed in registration with an aperture in one of the side walls of said housing in order that when said cartridge is loaded in a video record/reproduce unit, said reel can be driven by said unit, said cartridge comprising:
- a cord wrapped about said reel in a direction opposite to that in which said reel is rotated when said record/reproduce unit is actuated in a rewind mode, such cord having a free end disposed through an opening in said housing so that a determinable pressure may be exerted on said cord for opposing rewind rotation of said reel or overcoming brake force on the same.
Dependencies are inferred from the claim text.