Browse Prior Art Database

Tape Cassette Load/Unload Mechanism

IP.com Disclosure Number: IPCOM000118910D
Original Publication Date: 1997-Sep-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Albrecht, TR: AUTHOR [+2]

Abstract

Disclosed is a simple device which accepts a tape cassette, opens its door, positions it at the read/write head and hub motors, and ejects it after use.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 69% of the total text.

Tape Cassette Load/Unload Mechanism

      Disclosed is a simple device which accepts a tape cassette,
opens its door, positions it at the read/write head and hub motors,
and ejects it after use.

      The mechanism is shown in the accompanying Figure.  The
cassette uses a swing door (1) which is pivoted about an axle (2)
located well inboard of the cassette edge.  The door is held shut by
a torsion  spring (not shown).  Upon insertion into the drive, the
door is opened  by a pin in the drive which presses against the tab
(3) on the door, causing it to pivot about its axle.  The pin is
mounted to a block (4) which limits its penetration into the cassette
by abutting the outer  case of the cartridge.  This minimizes the
space that must be reserved  in the cartridge to accommodate the
door-opening pin.

      Once the door is open, the remainder of the length of the
cassette must still be inserted in order to engage the head and hub
motors.  To enable this, the block holding the door-opening pin is
mounted on a spring-loaded sliding carriage (5), allowing it to move
backward as the cassette is moved into its final position.  The
spring on the carriage is substantially stiffer than the torsion
spring on the door, assuring that the door has swung through its full
arc before reaching its final position.  Loading is complete when the
cassette is pushed over a retaining lip (6) near the opening of the
drive and engages the head (7).  Alternatively, the ret...