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`Exhibit 1015: Summary of Sony’s Proposed Claim Constructions
`
`Term
`
`Claims
`
`“reel stopper means”
`
`1, 3-4
`
`“braking member”
`
`1, 3-4
`
`“urging member”
`
`1, 3-4
`
`Proposed Construction
`
`Section 112, Paragraph 6 Applies.
`
`Claimed Function: “locks the reel not to rotate when the magnetic tape cartridge is not being used
`and releases the reel to permit rotation thereof when the magnetic tape cartridge is to be used”
`
`Corresponding Structure: The structures identified below corresponding to the “braking
`member,” “urging member,” and “releasing member.”
`
`Section 112, Paragraph 6 Applies.
`
`Claimed Function: “moves between a locking position where it is in contact with the reel to
`restrict rotation of the reel and a releasing position where it is away from the reel to permit rotation
`of the same.”
`
`Corresponding Structure:
`
`
`(1) a disc with an annular braking gear formed on its lower surface,
`(2) the braking gear adapted to be engaged with an engagement gear tooth [teeth] on an
`engagement projection formed on the reel, and
`(3) a projection extending upward from the disc’s upper surface, which engages a projection
`extending downward from the inner surface of the upper half of the cartridge casing.
`
`
`Section 112, Paragraph 6 Applies.
`
`Claimed Function: “urges the braking member toward the locking position”
`
`Corresponding Structure: “coiled spring”
`
`
`1
`
`SONY Exhibit 1015
`SONY v. FUJI
`
`
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`
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`Term
`
`Claims
`
`“releasing member”
`
`1, 3-4
`
`“guide member”
`
`1-2
`
`“reel drive means”
`
`1, 3-4
`
`Proposed Construction
`
`Section 112, Paragraph 6 Applies.
`
`Claimed Function: “moves the braking member toward the releasing position in response to a reel
`chucking action of the drive gear of a tape drive”1
`
`Corresponding Structure: “plate-like body with leg portions extending downward from its lower
`surface”
`
`Section 112, Paragraph 6 Applies.
`
`Claimed Function: “centers the braking member with respect to the reel”
`
`Corresponding Structure: “at least three ribs formed on the inner surface of the reel hub, each rib
`having an inclined surface which inclines downward from the upper portion of the inner surface of
`the reel hub toward the center of the reel”
`
`Section 112, Paragraph 6 Applies.
`
`Claimed Function: “driving the reel”
`
`Corresponding Structure: “drive gear”
`
`
`
`1 This function incorporates Sony’s proposed construction for the phrase “reel drive means.”
`2
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