Pivoting, dual state magnetic latch for disk file actuator

Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G11B 554, G11B 2122

Patent

active

053412591

ABSTRACT:
A toggling, dual state magnetic latch is provided for a disk file rotary head positioner rotatably mounted relative to the base and includes a voice coil for rotary displacement within a magnetic field provided by an actuator voice coil permanent magnet. The latch comprises a latch pin formed of a ferromagnetic material located on an arm extending from the voice coil of the actuator; a latch mounting pivot pin mounted to the base, a latch body rotatably mounted to the latch mounting pivot pin and positionable between an unlatched position and a latched position, the latch body including a toggle portion carrying a latch permanent magnet and including a counterweight portion located generally oppositely of the toggle portion for carrying counterweight for counterweighting the latch body about an axis of rotation aligned with the latch mounting pivot pin, a bias force mechanism including the voice coil permanent magnet for applying a predetermined bias force to the latch body in order to maintain it at the unlatched position, the latch body and the latch pin being so located that as the latch pin moves in a direction toward the latch body and reaches a predetermined distance to the latch permanent magnet, the bias force is rapidly overcome, and the latch body toggles to a latched position such that the latch pin is directly adjacent to the latch permanent magnet when the actuator has positioned the data transducer head at a landing zone on the storage disk.

REFERENCES:
patent: 4139874 (1979-02-01), Shiraishi
patent: 4300176 (1981-11-01), Gilovich et al.
patent: 4594627 (1986-06-01), Viskochil et al.
patent: 4654735 (1987-03-01), Israelev et al.
patent: 4660120 (1987-04-01), Manzke et al.
patent: 4686595 (1987-08-01), Bryer
patent: 4692827 (1987-09-01), Campbell
patent: 4706142 (1987-11-01), Hattori et al.
patent: 4716480 (1987-12-01), Wiens et al.
patent: 4751595 (1988-06-01), Kishi et al.
patent: 4764831 (1988-08-01), Patel
patent: 4868695 (1989-08-01), Quatro et al.
patent: 4881139 (1989-11-01), Hazebrouck
patent: 4890176 (1989-12-01), Casey et al.
patent: 4903157 (1990-02-01), Malek
patent: 4947274 (1990-08-01), Casey et al.
patent: 4951943 (1990-07-01), Perry
patent: 4965684 (1990-10-01), Stefansky
patent: 4985793 (1991-01-01), Anderson
patent: 5003422 (1991-03-01), Sun et al.
patent: 5023736 (1991-06-01), Kelsic et al.
patent: 5025335 (1991-06-01), Stefansky
patent: 5034837 (1991-07-01), Schmitz
patent: 5095395 (1992-03-01), Wakatsuki
patent: 5109310 (1992-04-01), Ohkjita et al.
patent: 5208713 (1993-05-01), Lindsay et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Pivoting, dual state magnetic latch for disk file actuator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pivoting, dual state magnetic latch for disk file actuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pivoting, dual state magnetic latch for disk file actuator will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-507001

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.