US4812938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floppy disk liner with improved cleaning ability
Assignee: FIBER TECHNOLOGY Corp A CORP OF
•
Filing: 1987-06-18
•
Granted: 1989-03-14
•
Expires: 2007-06-18
Abstract
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.
Inventors
- 👤 Randall J. Rogers
- 👤 Beth Z. Silverman
- 👤 Armand F. Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:49
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/50; G11B23/505; G11B23/02; G11B23/03; G11B23/033; G11B23/0332
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
151 words
An improved linear material for wiping debris from a recording media to eliminate errors in transmission of information with respect to said recording media, said linear being a cohesive nonwoven web having fibrous surfaces and void volumes therewithin, the improvement comprising: at least one surface of said linear contactable with a surface of the recording media, said liner surface having a fretting area of free vibratable fibers comprising at least 10% of said surface, said free vibratable fibers, when vibrated against the surface of said recording media and in contact with said debris, imparting energy thereto causing said debris to move into said void volume of said linear removing said debris from the recording media, wherein the free vibratable fibers within said fretting area are fibers having a crimped structure of a selected number of crimps formed along the length of the fibers for improving the debris-removing property of said fibers.
Claim 2
Dependent Claim
151 words
An improved linear material for wiping debris from a recording media to eliminate errors in transmission of information with respect to said recording media, said linear being a cohesive nonwoven web having fibrous surfaces and void volumes therewithin, the improvement comprising: at least one surface of said linear contactable with a surface of the recording media, said liner surface having a fretting area of free vibratable fibers comprising at least 10% of said surface, said free vibratable fibers, when vibrated against the surface of said recording media and in contact with said debris, imparting energy thereto causing said debris to move into said void volume of said linear removing said debris from the recording media, wherein the free vibratable fibers within said fretting area are fibers having a crimped structure of a selected number of crimps formed along the length of the fibers for improving the debris-removing property of said fibers.
Claim 3
Dependent Claim
29 words
The linear material of claim 1 wherein the fretting area of said free vibratable fibers may comprise about 10% to about 87% of the area of said linear surface.
Claim 4
Dependent Claim
15 words
The liner material of claim 1 wherein the liner has a first and second surface.
Claim 5
Dependent Claim
24 words
The linear material of claim 3 wherein the first and second surfaces each have a fretting area of between about 10% to about 87%.
Claim 6
Dependent Claim
24 words
The liner material of claim 1 wherein the crimped free vibratable fibers have between about 7 to about 14 crimps per inch of fiber.
Claim 7
Dependent Claim
37 words
The liner material of claim 1 wherein the free vibratable fibers are selected from a group comprising polyethylene terephthalate, polybutylene terephthalate or any polyester fibers derived from the condensation of dicarboxylic acids with dialcohol, or combinations thereof.
Claim 8
Dependent Claim
32 words
The liner material of claim 1 wherein the free vibratable fibers are selected from a group consisting of: rayon, nylon, acrylic, polyamide, polyolefin, cotton, wool, cellulose, polyacrylonitrile, and polyvinylchloride or combinations thereof.
Claim 9
Dependent Claim
19 words
The liner material of claim 1 wherein the fibers have a substantially hydrophilic surface to absorb distilled water instantaneously.
Claim 10
Dependent Claim
27 words
The liner material of claim 1 wherein the fibers have a coefficient of friction between said recording media and said liner of about 0.25 to about 0.9.
Claim 11
Dependent Claim
19 words
The liner material of claim 1 wherein the fibers have a denier of between about 0.5 to about 1.25.
Claim 12
Dependent Claim
172 words
An improved linear material for wiping debris from a recording media to eliminate errors in transmission of information with respect to said recording media, said liner being a cohesive nonwoven web having at least one layer of fibers having fibrous surfaces and void volumes therewithin, the improvement comprising: said fiber being bonded together in a plurality of recessed discrete bonding points; and at least one surface of said linear contactable with a surface of the recording media, said linear surface having a fretting area of free vibratable fibers comprising at least 10% of said surface, said free vibratable fibers, when vibrated against the surface of said recording media and in contact with said debris, imparting energy thereto causing said debris to move into said void volume of said linear removing said debris from the recording media, wherein the free vibratable fibers within said fretting area are fibers having a crimped structure for a selected number of crimps formed along the length of the fibers for improving the debris-removing property of said fibers.
Claim 13
Dependent Claim
172 words
An improved linear material for wiping debris from a recording media to eliminate errors in transmission of information with respect to said recording media, said liner being a cohesive nonwoven web having at least one layer of fibers having fibrous surfaces and void volumes therewithin, the improvement comprising: said fiber being bonded together in a plurality of recessed discrete bonding points; and at least one surface of said linear contactable with a surface of the recording media, said linear surface having a fretting area of free vibratable fibers comprising at least 10% of said surface, said free vibratable fibers, when vibrated against the surface of said recording media and in contact with said debris, imparting energy thereto causing said debris to move into said void volume of said linear removing said debris from the recording media, wherein the free vibratable fibers within said fretting area are fibers having a crimped structure for a selected number of crimps formed along the length of the fibers for improving the debris-removing property of said fibers.
Claim 14
Dependent Claim
25 words
The liner material of claim 11 wherein the fibers may have a range of between about 7 to about 14 crimps per inch of fiber.
Claim 15
Dependent Claim
26 words
The liner material of claim 11 wherein said fretting area comprises a proportion of said liner surface in a range between about 10% to about 87%.
Claim 16
Dependent Claim
16 words
The liner material of claim 11 wherein said liner has a first and a second surface.
Claim 17
Dependent Claim
24 words
The liner material of claim 14 wherein said first and second surfaces each has a fretting area of between about 10% to about 87%.
Claim 18
Dependent Claim
19 words
The liner material of claim 11 wherein the fibers have a substantially hydrophilic surface to absorb distilled water instantaneously.
Claim 19
Dependent Claim
27 words
The liner material of claim 11 wherein the fibers have a coefficient of friction between said recording media and said liner of about 0.25 to about 0.9.
Claim 20
Dependent Claim
19 words
The liner material of claim 11 wherein the fibers have a denier of between about 0.5 to about 1.25.
Claim 21
Dependent Claim
37 words
The liner material of claim 11 wherein the free vibratable fibers are selected from a group comprising polyethylene terephthalate, polybutylene terephthalate or any polyester fibers derived from the condensation of dicarboxylic acids with dialcohol, or combinations thereof.
Claim 22
Dependent Claim
32 words
The liner material of claim 11 wherein the free vibratable fibers are selected from a group consisting of: rayon, nylon, acrylic, polyamide, polyolefin, cotton, wool, cellulose, polyacrylonitrile, and polyvinylchloride or combinations thereof.
Claim 23
Dependent Claim
151 words
A recording medium comprising a jacket, a magnetic disk, and an improved nonwoven linear having at least one layer of fibers bonded together, said linear being a cohesive nonwoven web having fibrous surfaces and a void volume therewithin, the improvement comprising: at least one surface of said linear contactable with a surface of the magnetic disk, said linear surface having a fretting area of free vibratable fibers comprising at least 10% of said surface, said free vibratable fibers, when vibrated against the surface of said magnetic disk and in contact with said debris, imparting energy thereto causing said debris to move into said void volume of said liner removing said debris from the magnetic disk, wherein the free vibratable fibers within said fretting area are fibers having a crimped structure of a selected number of crimps formed along the length of the fibers for improving the debris-removing property of said fibers.
Claim 24
Dependent Claim
151 words
A recording medium comprising a jacket, a magnetic disk, and an improved nonwoven linear having at least one layer of fibers bonded together, said linear being a cohesive nonwoven web having fibrous surfaces and a void volume therewithin, the improvement comprising: at least one surface of said linear contactable with a surface of the magnetic disk, said linear surface having a fretting area of free vibratable fibers comprising at least 10% of said surface, said free vibratable fibers, when vibrated against the surface of said magnetic disk and in contact with said debris, imparting energy thereto causing said debris to move into said void volume of said liner removing said debris from the magnetic disk, wherein the free vibratable fibers within said fretting area are fibers having a crimped structure of a selected number of crimps formed along the length of the fibers for improving the debris-removing property of said fibers.
Claim 25
Dependent Claim
25 words
The liner material of claim 21 wherein the fibers may have a range of between about 7 to about 14 crimps per inch of fiber.
Claim 26
Dependent Claim
26 words
The liner material of claim 21 wherein said fretting area comprises a proportion of said liner surface in a range between about 10% to about 87%.
Claim 27
Dependent Claim
16 words
The liner material of claim 21 wherein said liner has a first and a second surface.
Claim 28
Dependent Claim
24 words
The liner material of claim 24 wherein said first and second surfaces each has a fretting area of between about 10% to about 87%.
Claim 29
Dependent Claim
19 words
The liner material of claim 21 wherein the fibers have a substantially hydrophilic surface to absorb distilled water instantaneously.
Claim 30
Dependent Claim
27 words
The liner material of claim 21 wherein the fibers have a coefficient of friction between said recording media and said liner of about 0.25 to about 0.9.
Claim 31
Dependent Claim
19 words
The liner material of claim 21 wherein the fibers have a denier of between about 0.5 to about 1.25.
Claim 32
Dependent Claim
37 words
The liner material of claim 21 wherein the free vibratable fibers are selected from a group comprising polyethylene terephthalate, polybutylene terephthalate or any polyester fibers derived from the condensation of dicarboxylic acids with dialcohol, or combinations thereof.
Claim 33
Dependent Claim
32 words
The liner material of claim 21 wherein the free vibratable fibers are selected from a group consisting of: rayon, nylon, acrylic, polyamide, polyolefin, cotton, wool, cellulose, polyacrylonitrile, and polyvinylchloride or combinations thereof.
Claim 34
Dependent Claim
194 words
An improved linear material for wiping debris from a recording media to eliminate errors in transmission of information with respect to said recording media, said linear being a cohesive nonwoven web of fibers having fibrous surfaces and void volumes therewithin, the improvement comprising: at least one surface of said liner contactable with a surface of the recording media, said linear surface having said fibers bonded together at a plurality of recessed discrete bonding points, and having a fretting area other than at said bonding points of free vibratable fibers in contact with the surface of the recording media, said free vibratable fibers when vibrated against the surface of said recording media and in contact with said debris, imparting energy thereto causing said debris to move into said void volume of said linear removing said debris from the recording media, wherein said linear surface has the characteristics of said fretting area of said free vibratable fibers constituting about 10% to 87% of the are of said linear surface, a coefficient of friction of contact with said surface of the recording media of about 0.25 to 0.9, and a wear contact angle of substantially zero degrees.
Claim 35
Dependent Claim
194 words
An improved linear material for wiping debris from a recording media to eliminate errors in transmission of information with respect to said recording media, said linear being a cohesive nonwoven web of fibers having fibrous surfaces and void volumes therewithin, the improvement comprising: at least one surface of said liner contactable with a surface of the recording media, said linear surface having said fibers bonded together at a plurality of recessed discrete bonding points, and having a fretting area other than at said bonding points of free vibratable fibers in contact with the surface of the recording media, said free vibratable fibers when vibrated against the surface of said recording media and in contact with said debris, imparting energy thereto causing said debris to move into said void volume of said linear removing said debris from the recording media, wherein said linear surface has the characteristics of said fretting area of said free vibratable fibers constituting about 10% to 87% of the are of said linear surface, a coefficient of friction of contact with said surface of the recording media of about 0.25 to 0.9, and a wear contact angle of substantially zero degrees.
Claim 36
Dependent Claim
21 words
An improved linear according to claim 31, wherein said fretting area is about 43% of the area of said linear surface.
Claim 37
Dependent Claim
15 words
An improved linear according to claim 31, wherein said coefficient of friction is about 0.35.
Claim 38
Dependent Claim
21 words
An improved linear according to claim 31, wherein the free vibratable fibers within said fretting area are fibers having looped ends.
Claim 39
Dependent Claim
21 words
An improved linear according to claim 31, wherein the free vibratable fibers within said fretting area are fibers having free ends.
Claim 40
Dependent Claim
44 words
An improved linear according to claim 31, wherein the free vibratable fibers within said fretting area are crimped fibers having a crimped structure of a selected number of crimps formed along the length of the fibers for improving the debris-removing property of said fibers.
References Cited (Backward Citations)
US3668658A
Cited
US4251843A
Cited
US4354213A
Cited
US4586606A
Cited
US4610352A
Cited
US4586606B1
Cited
US4655348A
Cited
US4724502A
Cited
US4680661A
Cited
US4709816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |