The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2005
Filed:
Feb. 03, 2003
Armando J. Argumedo, Tucson, AZ (US);
Edwin R. Childers, Tucson, AZ (US);
Mark A. Taylor, Tucson, AZ (US);
Richard A. West, Corona, AZ (US);
Armando J. Argumedo, Tucson, AZ (US);
Edwin R. Childers, Tucson, AZ (US);
Mark A. Taylor, Tucson, AZ (US);
Richard A. West, Corona, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and apparatus to monitor the positioning of a tape leader pin in a tape threader block moveably disposed in a tape drive. The' apparatus includes a tape threader block assembly comprising a first circuit having a first coil, a second circuit having a second coil, where that second circuit has an impedance, where the first coil is disposed adjacent the second coil. The apparatus further includes a detection circuit which detects the impedance of the second circuit, where the second circuit has a first impedance when the first circuit is open, and where the second circuit has a second impedance when the second circuit is closed. In the event a tape leader pin is properly releaseably fixtured to Applicants' threader block, the first circuit is closed and the impedance of the second circuit changes. The detection circuit detects that impedance change and provides a signal to a controller indicating that the tape leader pin is properly seated in the threader block.