Appeal No. 96-3604 Page 2
Application No. 08/383,658
filed an amendment after final rejection on December 14, 1995,
which was entered. We reverse.
BACKGROUND
The invention relates to miniaturized magnetic disk
drives. According to the appellants, miniaturizing the upper
and lower magnetic heads of a disk drive increases their
sliding resistance, which increases the drive’s running
torque. Increased torque increases the drive’s consumption of
power. This quickly drains the battery of a portable personal
computer. (Spec. at 3-4.) In addition, a wide groove in each
head reduces the penetration margin, i.e., the ability of the
heads to record or reproduce. (Id. at 4.)
The invention is a miniaturized magnetic disk drive with
upper and lower magnetic heads. The width of the groove in
the upper head is reduced to a range between 0.2 mm and 0.4
mm. The groove in the lower head is eliminated. The
reduction and elimination decrease the heads’ sliding
resistance and the drive’s running torque and power
consumption. (Id. at 11-12; Appeal Br. at 4.)
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 Next
Last modified: November 3, 2007