US3620473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape transports
Assignee: Raymond Engineering Inc
•
Filing: 1969-04-11
•
Granted: 1971-11-16
•
Expires: 1989-04-11
Abstract
Abstract A peripheral belt tape transport employs a single capstan driving the peripheral belt. The peripheral belt is maintained in contact with the outer layers of magnetic tape on a pair of tape packs. A brake acts on the peripheral belt on the opposite side of the tape packs from the driving capstan. In the preferred embodiment, the brake takes the form of a solid graphite shoe in contact with the peripheral belt at a position where the belt is separated from the magnetic tape. In alternative embodiments, a rotating peripheral belt guide drives a mechanical, viscous, magnetic, or eddy current brake, or a loaded generator, which subtracts energy from the peripheral belt. The operating temperature range of the peripheral belt drive is greatly enhanced by not rigidly adhering the inner ends of the tape to the tape pack hubs and by the use of lubricated tape. The lubricated tape is wound with its oxide side facing outwardly on the tape packs. The tape is separated from the belt at the recording head. Head to tape contact is maintained solely by means of tape tension. Conventional flanged reels support the tape packs.
Inventors
- 👤 Robert L Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:50
CPC Classifications
B; B65; B65H; B65H20/00; B65H20/06; G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/32
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
192 words
A tape transport comprising: A. a recording tape spirally wound on a pair of freely rotatable tape packs with a portion of said tape passing between said packs; B. an endless belt in contact with the outer layers of tape on said tape packs, a first portion of said belt being separated from the portion of said tape passing between said tape packs and said belt having an elasticity substantially equal to or less than polyimine or polyethylene terephthalate film 1 mil thick; C. first means acting on and driving a second portion of said belt between said tape packs on the opposite side of said tape between said tape packs from said first portion of said belt; and, D. second means isolated from said first means and independently of said first means acting on and braking said first portion of said belt to provide a differential velocity to the portions of said belt in contact with said tape packs, wherein said recording tape packs are spirally wound on freely rotatable hubs and the ends thereof are not fastened to said hubs and are free to rotate with respect to said hubs.
Claim 2
Dependent Claim
192 words
A tape transport comprising: A. a recording tape spirally wound on a pair of freely rotatable tape packs with a portion of said tape passing between said packs; B. an endless belt in contact with the outer layers of tape on said tape packs, a first portion of said belt being separated from the portion of said tape passing between said tape packs and said belt having an elasticity substantially equal to or less than polyimine or polyethylene terephthalate film 1 mil thick; C. first means acting on and driving a second portion of said belt between said tape packs on the opposite side of said tape between said tape packs from said first portion of said belt; and, D. second means isolated from said first means and independently of said first means acting on and braking said first portion of said belt to provide a differential velocity to the portions of said belt in contact with said tape packs, wherein said recording tape packs are spirally wound on freely rotatable hubs and the ends thereof are not fastened to said hubs and are free to rotate with respect to said hubs.
Claim 3
Dependent Claim
39 words
A tape transport as defined in claim 1 wherein said recording tape is a magnetic tape having a magnetic-sensitive side and an insensitive side and wherein said tape is wound on said packs with the magnetic-sensitive side facing outward.
Claim 4
Dependent Claim
20 words
A tape transport as defined in claim 2 wherein said magnetic tape bears a lubricant on the magnetic-insensitive side thereof.
Claim 5
Dependent Claim
20 words
A tape transport as defined in Claim 1 and E. a pair of flanged tape reels supporting said tape packs.
Claim 6
Dependent Claim
18 words
A tape transport as defined in claim 4 wherein said tape bears a lubricant on one side thereof.
Claim 7
Dependent Claim
160 words
In a tape transport comprising: A. a recording tape spirally wound on a pair of freely rotatable tape packs with a portion of said tape passing between said packs; B. an endless belt in contact with the outer layers of tape on said tape packs, a first portion of said belt being separated from the portion of said tape passing between said tape packs; C. first means acting on and driving a second portion of said belt between said tape packs on the opposite side of said tape between said tape packs from said first portion of said belt; and, D. second means acting on said first portion of said belt to provide a differential velocity to the portions of said belt in contact with said tape packs; the improvement comprising: E. said tape packs comprising freely rotatable hubs about which said tape is spirally wound, the ends of said tape being free to rotate with respect to said hubs.
Claim 8
Dependent Claim
160 words
In a tape transport comprising: A. a recording tape spirally wound on a pair of freely rotatable tape packs with a portion of said tape passing between said packs; B. an endless belt in contact with the outer layers of tape on said tape packs, a first portion of said belt being separated from the portion of said tape passing between said tape packs; C. first means acting on and driving a second portion of said belt between said tape packs on the opposite side of said tape between said tape packs from said first portion of said belt; and, D. second means acting on said first portion of said belt to provide a differential velocity to the portions of said belt in contact with said tape packs; the improvement comprising: E. said tape packs comprising freely rotatable hubs about which said tape is spirally wound, the ends of said tape being free to rotate with respect to said hubs.
Claim 9
Dependent Claim
45 words
A tape transport as defined in claim 6 wherein the sides of said tape have different coefficients of friction with respect to said hubs and said tape is wound with the side having the lowest coefficient friction with respect to said hubs against said hubs.
Claim 10
Dependent Claim
19 words
A tape transport as defined in claim 6 wherein the side of said tape facing said hubs is lubricated.
Claim 11
Dependent Claim
30 words
A tape transport as defined in claim 6 and F. a pair of flanges affixed to each of said hubs to form flanged tape reels for supporting said tape packs.
Claim 12
Dependent Claim
41 words
A tape transport as defined in claim 9 wherein said tape is a magnetic tape bearing a lubricant on a magnetic-insensitive side thereof and wherein said tape is wound on said packs with the magnetic-insensitive side facing inward toward said hubs.
Claim 13
Dependent Claim
19 words
A tape transport as defined in claim 6 wherein said magnetiC tape bears a lubricant on one side thereof.
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |