Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1993-05-06
1994-08-30
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
24303, 2922515, 335177, 335285, G11B 554, A44B 104, E05C 1756, H01F 720
Patent
active
053433467
ABSTRACT:
A single-point magnetic contact latch assembly for "parking" a read/write head of a memory storage device over a data-free landing zone during off-power conditions has one or more permanent magnets, a core having a curvilinear shape on one end and an annular flange formed on the opposing end, and a casing, having an open end and a partially closed end, covering the magnet(s). The core is disposed adjacent the magnet(s) and lies within the flux paths thereof. The casing covers the core and magnet(s) so that the curvilinear end of the core extends through the partially open end of the casing. The casing abuts an outer periphery surface of the flange with a press-fit so that the casing is outwardly radially deformed at the point of abutment securely anchoring the casing, and magnet(s) in position relative to the core. The single-point magnetic contact latch assembly is mounted to a crash stop of the memory storage device and engages a ferromagnetic portion of an actuator assembly used to position the read/write head along the storage device during off-power conditions locating the read/write head over the landing zone to prevent damage to the memory storage device and the read/write head caused by physical contact between the two. An alternative embodiment of the magnetic latch assembly has a substantially spherically shaped core that also provides a single-point magnetic contact between the core and the actuation assembly.
REFERENCES:
patent: 2693382 (1954-11-01), Teetor
patent: 2812203 (1957-11-01), Scholten
patent: 2942907 (1960-06-01), Nagel et al.
patent: 3277681 (1966-10-01), Bey
patent: 3324521 (1967-06-01), Humiston
patent: 3369205 (1968-02-01), Hamrick
patent: 3722360 (1973-03-01), Blakey et al.
patent: 3875859 (1975-04-01), Busch
patent: 4078219 (1978-03-01), Hodgson
patent: 4265002 (1981-05-01), Hosken
patent: 4310188 (1982-01-01), Aoki
patent: 4401960 (1983-08-01), Uchikune et al.
patent: 4505007 (1985-03-01), Aoki
patent: 4594627 (1986-06-01), Viskochil et al.
patent: 4660120 (1987-04-01), Manzke et al.
patent: 4692829 (1987-09-01), Campbell
patent: 4700436 (1987-10-01), Morita
patent: 4825526 (1989-05-01), Shenier et al.
patent: 4881139 (1989-11-01), Hazebrouck
patent: 4888655 (1989-12-01), Bonn
patent: 4888656 (1989-12-01), West
patent: 4890176 (1989-12-01), Casey et al.
patent: 4893205 (1990-01-01), Hoppe et al.
patent: 4896231 (1990-01-01), Hoppe
patent: 4903157 (1990-02-01), Malek
patent: 4933791 (1990-06-01), Cheng
patent: 4941235 (1990-07-01), Aoki
patent: 4947274 (1990-08-01), Casey et al.
patent: 4985793 (1991-01-01), Anderson
patent: 4989108 (1991-01-01), Chang
patent: 4995025 (1991-02-01), Schulze
patent: 5003422 (1991-03-01), Sun et al.
patent: 5023736 (1991-06-01), Kelsic et al.
patent: 5025335 (1991-06-01), Stefansky
patent: 5134608 (1992-07-01), Strickler et al.
patent: 5170300 (1992-12-01), Stefansky
patent: 5187627 (1993-02-01), Hickox et al.
patent: 5231556 (1993-07-01), Blanks
Evans Jefferson
Heinz A. J.
Xolox Corporation
LandOfFree
Single point magnetic contact hatch assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Single point magnetic contact hatch assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single point magnetic contact hatch assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-33752