US4408241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning device
Assignee: DISCWASHER Inc A CORP OF
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Filing: 1981-06-09
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Granted: 1983-10-04
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Expires: 2001-06-09
Abstract
Abstract A cleaning device for magnetic tape heads comprises a mylar tape on which is deposited a layer of a low-tack adhesive. A dacron fabric is bonded to the mylar tape by the adhesive layer. This dacron tape acts as a mechanical cleaning surface when it is moved across the contact surface of the tape head. The adhesive layer operates both to secure individual strands of the fabric rigidly in place so as to support the strands properly when they are in contact with the tape head, and also to capture and control the movement of magnetic particles dislodged from the tape head by the strands of the fabric. Alternate embodiments provide ridges for defining a pattern of raised projections extending away from an underlying base.
Inventors
- 👤 Kenji Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:30
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/41
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
77 words
A cleaning device for a contact-type information transducing head comprising: a base; means for defining a plurality of raised areas projecting away from at least one surface of the base, said raised areas adapted to remove material from and clean the transducing head; and an adhesive deposited on the at least one surface of the base between the plurality of raised areas, said adhesive adapted to capture material removed from the transducing head by the raised areas.
Claim 2
Dependent Claim
77 words
A cleaning device for a contact-type information transducing head comprising: a base; means for defining a plurality of raised areas projecting away from at least one surface of the base, said raised areas adapted to remove material from and clean the transducing head; and an adhesive deposited on the at least one surface of the base between the plurality of raised areas, said adhesive adapted to capture material removed from the transducing head by the raised areas.
Claim 3
Dependent Claim
30 words
The invention of claim 1 wherein the means for defining the plurality of raised areas comprises a plurality of strands secured to the at least one surface of the base.
Claim 4
Dependent Claim
15 words
The invention of claim 2 wherein the plurality of strands are arranged in a fabric.
Claim 5
Dependent Claim
15 words
The invention of claim 3 wherein the plurality of strands define a rectangular grid pattern.
Claim 6
Dependent Claim
15 words
The invention of claim 3 wherein the plurality of strands define a hexagonal grid pattern.
Claim 7
Dependent Claim
12 words
The invention of claim 1 wherein the base comprises an elongated tape.
Claim 8
Dependent Claim
43 words
The invention of claim 6 further comprising: a cassette housing; two hubs mounted for rotation in the cassette housing; and means for mounting the tape to the hubs in the cassette housing such that rotation of the hubs causes the tape to move.
Claim 9
Dependent Claim
49 words
A cleaning device for a magnetic information transducing head comprising: a cleaning tape; means for defining a raised spacer pattern on at least one side of the tape; and an adhesive deposited on the at least one side of the cleaning tape in the areas between the spacer pattern.
Claim 10
Dependent Claim
49 words
A cleaning device for a magnetic information transducing head comprising: a cleaning tape; means for defining a raised spacer pattern on at least one side of the tape; and an adhesive deposited on the at least one side of the cleaning tape in the areas between the spacer pattern.
Claim 11
Dependent Claim
30 words
The invention of claim 8 wherein the means for defining a raised spacer pattern comprises a plurality of raised ridges on the at least one side of the cleaning tape.
Claim 12
Dependent Claim
36 words
The invention of claim 8 wherein the defining means comprises a plurality of strands secured to the at least one side of the cleaning tape, said plurality of strands cooperating to define the raised spacer pattern.
Claim 13
Dependent Claim
15 words
The invention of claim 10 wherein the plurality of strands are arranged in a fabric.
Claim 14
Dependent Claim
15 words
The invention of claim 11 wherein the plurality of strands define a rectangular grid pattern.
Claim 15
Dependent Claim
15 words
The invention of claim 11 wherein the plurality of strands define a hexagonal grid pattern.
Claim 16
Dependent Claim
39 words
The invention of claim 8 further comprising: a tape cassette housing; two hubs mounted for rotation in the housing; and means for mounting the tape to the hubs such that rotation of the hubs causes the tape to move.
Claim 17
Dependent Claim
83 words
A cleaning device for a magnetic information transducing head comprising: a cleaning tape; a layer of adhesive bonded to one surface of the cleaning tape; and a plurality of elongated strips bonded to the adhesive; said plurality of strips cooperating to define a pattern of raised areas, the spacing of said plurality of strips chosen to expose regions of the layer of adhesive between the strips so that material removed from the head by said plurality of strips adhesively bonds to the adhesive.
Claim 18
Dependent Claim
83 words
A cleaning device for a magnetic information transducing head comprising: a cleaning tape; a layer of adhesive bonded to one surface of the cleaning tape; and a plurality of elongated strips bonded to the adhesive; said plurality of strips cooperating to define a pattern of raised areas, the spacing of said plurality of strips chosen to expose regions of the layer of adhesive between the strips so that material removed from the head by said plurality of strips adhesively bonds to the adhesive.
Claim 19
Dependent Claim
17 words
The invention of claim 15 wherein the plurality of elongated strips are woven to form a fabric.
Claim 20
Dependent Claim
15 words
The invention of claim 15 wherein the plurality of strips define a rectangular grid pattern.
Claim 21
Dependent Claim
15 words
The invention of claim 15 wherein the plurality of strips define a hexagonal grid pattern.
Claim 22
Dependent Claim
39 words
The invention of claim 11 further comprising: a tape cassette housing; two hubs mounted for rotation in the housing; and means for mounting the tape to the hubs such that rotation of the hubs causes the tape to move.
Claim 23
Dependent Claim
90 words
A cleaning device for a magnetic information transducing head comprising: a cleaning tape; a layer of adhesive bonded to one surface of the tape; a fabric bonded to the layer of adhesive, said fabric having a hardness sufficient to clean and remove material from the head, substantially without damaging the head; said fabric comprising a plurality of strands, the spacing between adjacent strands chosen to expose regions of the layer of adhesive between the strands such that material removed from the head by the fabric is captured by the adhesive.
Claim 24
Dependent Claim
90 words
A cleaning device for a magnetic information transducing head comprising: a cleaning tape; a layer of adhesive bonded to one surface of the tape; a fabric bonded to the layer of adhesive, said fabric having a hardness sufficient to clean and remove material from the head, substantially without damaging the head; said fabric comprising a plurality of strands, the spacing between adjacent strands chosen to expose regions of the layer of adhesive between the strands such that material removed from the head by the fabric is captured by the adhesive.
Claim 25
Dependent Claim
39 words
The invention of claim 20 further comprising: a tape cassette housing; two hubs mounted for rotation in the housing; and means for mounting the tape to the hubs such that rotation of the hubs causes the tape to move.
Claim 26
Dependent Claim
15 words
The invention of claim 20 wherein the plurality of strands define a rectangular grid pattern.
Claim 27
Dependent Claim
16 words
The invention of claim 20 wherein the plurality of strands define a hexagonal grid pattern .
Claim 28
Independent Claim
89 words
A method for cleaning a magnetic information transducing head in a magnetic tape player comprising: providing a cleaning tape having a plurality of elongated strips defining a raised spacer pattern on at least one side of the tape and an adhesive deposited on the at least one side of the cleaning tape in the areas between the spacer pattern; moving the cleaning tape across the transducing head so that the raised spacer pattern rubs against the transducing head to remove material; and capturing the removed material on the adhesive.
Claim 29
Independent Claim
89 words
A method for cleaning a magnetic information transducing head in a magnetic tape player comprising: providing a cleaning tape having a plurality of elongated strips defining a raised spacer pattern on at least one side of the tape and an adhesive deposited on the at least one side of the cleaning tape in the areas between the spacer pattern; moving the cleaning tape across the transducing head so that the raised spacer pattern rubs against the transducing head to remove material; and capturing the removed material on the adhesive.
Claim 30
Independent Claim
139 words
A method for cleaning a magnetic information transducing head in a cassette player comprising: providing a cleaning cassette including: a cleaning tape; means for defining a plurality of raised areas projecting away from at least one surface of the tape; an adhesive deposited on the at least one surface of the tape between the plurality of raised areas; a tape cassette housing; two hubs mounted for rotation in the housing; and means for mounting the tape to the hubs such that rotation of the hubs causes the tape to move; inserting the cleaning cassette into the cassette player; rotating the hubs of the cleaning cassette so that as the tape moves, the plurality of raised areas rubs against the transducing head to remove material from the head; and adhesively bonding material removing from the transducing head to the adhesive.
Claim 31
Independent Claim
139 words
A method for cleaning a magnetic information transducing head in a cassette player comprising: providing a cleaning cassette including: a cleaning tape; means for defining a plurality of raised areas projecting away from at least one surface of the tape; an adhesive deposited on the at least one surface of the tape between the plurality of raised areas; a tape cassette housing; two hubs mounted for rotation in the housing; and means for mounting the tape to the hubs such that rotation of the hubs causes the tape to move; inserting the cleaning cassette into the cassette player; rotating the hubs of the cleaning cassette so that as the tape moves, the plurality of raised areas rubs against the transducing head to remove material from the head; and adhesively bonding material removing from the transducing head to the adhesive.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |