Randall R Rogers

US Patent:

48129380, Mar 14, 1989

Filed:

Jun 18, 1987

Appl. No.:

7/064415

Inventors:

Randall J. Rogers - Millis MA
Beth Z. Silverman - Newton MA
Armand F. Lewis - Mattapoisett MA

International Classification:

G11B 2303
B65D 2530

US Classification:

360133

Abstract:

An improved liner material for wiping debris from recording media to eliminate errors in the transmission of information with respect to the recording media. The liner material is a fibrous web which has fibrous surfaces and void volumes therein, the improvement being that the liner has at least one surface, with a fretting area of free vibratable fibers of at least 10% of the total surface, in contact with a surface of the recording media, and when vibrated against the recording media, and in contact with debris thereon, the free vibratable fibers impart energy to the debris causing the debris to move into the void volume of the liner, thus removing the debris from the recording media. The removal of debris from the recording media results in the error-free transfer of information from a recording transducer to and from a recording target media.

US Patent:

48745677, Oct 17, 1989

Filed:

Apr 24, 1987

Appl. No.:

7/042138

Inventors:

George Lopatin - Newton Centre MA
Larry Y. Yen - Tewksbury MA
Randall R. Rogers - Billerica MA

Assignee:

Millipore Corporation - Bedford MA

International Classification:

B29D 2704

US Classification:

264 451

Abstract:

Microporous polypropylene membrane or hollow fibers is formed from a melt blend of 5 to 20 weight percent polypropylene and a solvent. The melt blend is shaped and cooled to effect solid phase separation of the polypropylene from the blend. The solvent is separated from the polypropylene by extraction and the porous polypropylene is dried under restraint to prevent shrinkage.

US Patent:

50759191, Dec 31, 1991

Filed:

Oct 27, 1986

Appl. No.:

6/923376

Inventors:

Randall J. Rogers - Millis MA
Beth Z. Silverman - Newton Center MA

Assignee:

International Paper Company - Purchase NY

International Classification:

A47L 2500
G11B 3300

US Classification:

15210R

Abstract:

A head cleaning disk for cleaning magnetic transducer heads in flexible computer disk drives. The head cleaning disk comprises a top fibrous wiping layer having a blend of low melt point and high melt point fibers, an inner composite layer of a multi-layer thermoplastic opaque film having two outside reflective layers of low melt point polymer and two inner layers of metal and film, and a bottom fibrous wiping layer having a blend of low melt point and high melt point fibers. The top, inner and bottom layers are bonded together by passing them between a pair of heated rolls which are under pressure. The heat from the rolls melts the low melt point fibers in the top and bottom fibrous layers and the outside reflective thermoplastic polymer of the inner layer thusly securing the layers together. The top and bottom fibrous layers provide sufficient abrasivity so when they contact the transducer heads they will remove debris from them without the use of cleaning solutions. In addition, the abrasivity of the top and bottom fibrous layers is controlled so there is insufficient abrasivity to damage the transducer heads.