US 4,063,292 A · Integral retained file protect means

Abstract

A tape reel adapted for use with a tape recorder/reproducer having control means operable to inhibit destruction of information on the tape by recording over previous information, includes a flange defining a tape cavity of the reel and a retaining wall extending axially of the flange. A lockout ring having portions defining an L-shaped cross section is configured to be removably retained by the retaining wall in a first position and a second position. A plunger assembly associated with the recorder/reproducer detects the position of the lockout ring to inhibit the record/erase electronics when the ring is in the first position. A detent assembly maintains the plunger in spaced relationship with the lockout ring in both the first and second positions to reduce the noise associated with the recording and the reproducing of the tape.

Claims10

Dependent claims

A reel adapted to store magnetic tape for use with a magnetic tape recorder/reproducer having record/erase electronics operable to inhibit erasure of information on the tape, the reel having a core, a first flange and a second flange defining a tape cavity for storing the tape, wherein the improvement comprises:

retaining means having an annular configuration and extending from the first flange onto the side of the first flange opposite the tape cavity;
lockout means having an annular configuration and being adapted to be removably retained by the retaining means in a first position and in a second position different from the first position;
a particular annular flange included in the lockout means and having a first relationship with the first flange in the first position and a second relationship with the first flange in a second position;
whereby
the reel with the lockout means in the first position is adapted to operate the erase electronics of the recorder/ reproducer to inhibit erasure of the information on the tape.

2 more elements

In combination:

a tape reel having a core with a generally cylindrical configuration and being adapted to store on the periphery of the core a magnetic tape having information recorded thereon;
a flange having a generally planar configuration and a fixed relationship with the core, the flange extending radially of the core at one end thereof;
an annular ring having portions defining an L-shaped cross-section;
means formed on the tape reel for removably retaining the ring on the tape reel in a first position of the ring and a second position of the ring different from the first position;
and
means for detecting the disposition of the ring on the reel in the first position for inhibiting the erasure of the information on the tape, and for detecting the disposition of the ring on the reel in the second position for permitting the erasure of the information on the tape.

3 more elements

Dependencies are inferred from the claim text.

Integral retained file protect means

Life of this patent

Integral retained file protect means

Life of this patent

Abstract

Claims10