US3808902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radial differential tape drive
Assignee: Individual
•
Filing: 1972-10-27
•
Granted: 1974-05-07
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Expires: 1992-10-27
Abstract
Abstract In a tape transport assembly, the combination comprising A. A PAIR OF CARRIERS FOR TAPE TO BE TRANSPORTED FROM A SUPPLY ROLL ON ONE CARRIER TO A TAKE-UP ROLL ON THE OTHER CARRIER, B. BELT MEANS LOCATED TO PRESSURALLY ENGAGE THE TAPE ROLLS AS THE RESPECTIVE CARRIERS FOR EFFECTING ROTATION OF THE ROLLS ON THE CARRIERS IN ORDER TO ACCOMPLISH SAID TRANSPORT, AND C. ROTARY DRIVE MEANS TO DRIVE THE BELT MEANS AT VELOCITIES PROXIMATE THE LOCI OF ENGAGEMENT WITH THE TAPE ROLLS CHARACTERIZED IN THAT THE TAPE EXTENT UNDERGOING TRANSPORTATION BETWEEN THE SUPPLY ROLL AND THE TAKE-UP ROLL IS MAINTAINED IN TENSION, THE DRIVE MEANS LOCATED TO RECEIVE APPLICATION OF COMPRESSIVE FORCES TRANSMITTED THROUGH THE THICKNESS DIMENSIONS OF THE BELT MEANS FROM THE TAPE ROLLS.
Inventors
- 👤 F Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:13
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/28; G11B15/295
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
126 words
In a tape transport assembly, the combination comprising a. a pair of carriers for tape to be transported from a supply roll on one carrier to a take-up roll on the other carrier, b. belt means located to pressurally engage the tape rolls on the respective carriers for effecting rotation of the rolls on the carriers in order to accomplish said transport, and c. rotary drive means to drive the belt means at velocities proximate the loci of engagement with the tape rolls characterized in that the tape extent undergoing transportation between the supply roll and the take-up roll is maintained in tension, the drive means located to receive application of compressive forces transmitted through the thickness dimensions of the belt means from the tape rolls.
Claim 2
Dependent Claim
126 words
In a tape transport assembly, the combination comprising a. a pair of carriers for tape to be transported from a supply roll on one carrier to a take-up roll on the other carrier, b. belt means located to pressurally engage the tape rolls on the respective carriers for effecting rotation of the rolls on the carriers in order to accomplish said transport, and c. rotary drive means to drive the belt means at velocities proximate the loci of engagement with the tape rolls characterized in that the tape extent undergoing transportation between the supply roll and the take-up roll is maintained in tension, the drive means located to receive application of compressive forces transmitted through the thickness dimensions of the belt means from the tape rolls.
Claim 3
Dependent Claim
39 words
The combination of claim 1 wherein the belt means has tape engaging surfaces characterized in that the velocity V2 of the belt surface engaging the take-up roll exceeds the velocity V1 of the belt surface engaging the supply roll.
Claim 4
Dependent Claim
29 words
The combination of claim 1 wherein the rotary drive means comprises a drive capstan located in a zone between the two carriers to receive application of said compressive forces.
Claim 5
Dependent Claim
29 words
The combination of claim 1 wherein the rotary drive means comprises a pair of drive capstans and the belt means comprises a pair of belts, one for each capstan.
Claim 6
Dependent Claim
39 words
The combination of claim 1 wherein the rotary drive means comprises capstan means from which the belt means extends tangentially at loci characterized in that said compressive forces are there locally transmitted through the thickness of the belt means.
Claim 7
Dependent Claim
21 words
The combination of cLaim 5 wherein the capstan means includes a radially resilient peripheral annulus in engagement with the belt means.
Claim 8
Dependent Claim
28 words
The combination of claim 1 wherein the major extent of the tape undergoing transport between the tape rolls is openly spaced from the belt means and capstan means.
Claim 9
Dependent Claim
46 words
The combination of claim 7 including idler roller means and magnetic head structure engageable with the tape extent undergoing transport between the tape rolls in spaced relation to the belt means and capstan means, and wherein the drive means for the capstan means includes a motor.
Claim 10
Dependent Claim
27 words
The combination of claim 1 including means yieldably urging the carriers and belt means in directions effecting said pressural engagement of the belt means and tape rolls.
Claim 11
Dependent Claim
42 words
The combination of claim 4 including a common support for the tape roll carriers and mechanism constraining the support for movement carrying the tape take-up roll relatively away from its associated capstan and the tape supply roll relatively toward its associated capstan.
References Cited (Backward Citations)
US3575058A
Cited
US3693513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |