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US 5,314,140 AGranted
Tape cartridge drive belt having a low ratio of static to dynamic friction
AssigneeAthana Incorporated
InventorGerhard Rotter
Life of this patent
Estimating the term…
Abstract
A magnetic tape cartridge incorporating a drive belt characterized by a smooth (e.g., average surface roughness less than 7 microinches, zero to peak, as measured by a Talysurf 10 surface analyzer set for a 0.003 cut off length) nontextured drive surface and a ratio of static to dynamic coefficients of friction between the drive surface and the magnetic tape surface, of less than 2. The drive belt is preferably integrally formed of a material which inherently yields the aforementioned drive surface characteristics without requiring that the naturally formed belt surface be specially treated.
Claims3
A tape cartridge comprising:
- a first reel mounted for rotation around its axis;
- a second reel mounted for rotation around its axis;
- a flat elongate magnetic tape extending between said reels having at least one end of said tape convolutely wound on one of said reels;
- tape guide means for bidirectionally moving said tape along a defined path from one of said reels to the other of said reels;
- a closed loop elongate drive belt having a drive surface;
- belt guide means supporting said drive belt for movement along a defined path maintaining an elongate portion of said drive surface in contact with an elongate portion of a surface of said tape;
- said belt drive surface having an average surface roughness less than 7 microinches zero to peak and a frictional characteristic relative to said tape surface such that the ratio of static to dynamic coefficients of friction between said surfaces is less than 2.
4 more elements
Dependencies are inferred from the claim text.