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US 4,360,173 AGranted
Magnetic tape cassette
AssigneeTDK Electronics Co., Ltd.
InventorShigemasa Shoji
Life of this patent
Estimating the term…
Abstract
A magnetic tape cassette includes a magnetic tape and two reels in a casing. The reel is formed by a reel substrate, a jaw and a tape clamping member. An exterior angle .alpha. between a prolonged line D.sub.1 of a contact surface of the reel substrate and an axial line E.sub.1 for dividing the tape clamping member into two half parts is less than 90 degrees.
Claims6
A magnetic tape cassette comprising:
- a magnetic tape and first and second reels for winding said magnetic tape which are held in a casing wherein each of said reels further comprises a reel substrate, a detachable tape clamping member having a first arcuate, radially internal rib and a second arcuate, radially external rib and which is detachably fitted to said reel substrate, wherein said tape clamping member further comrises a first and second jaw for engaging said reel substrate and wherein an exterior angle between a prolonged line of a contact surface of said jaw and an axial line of symmetry dividing said tape clamping member into two parts is less than 90 degrees on said jaw.
Dependencies are inferred from the claim text.