Magnetic tape threading and transport apparatus including a sensor for controlling air bearing block movement
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 14, 1994
Grant Date -
N/A
app pub date -
May 14, 1992
filing date -
May 14, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A magnetic tape cassette helical scan magnetic tape recorder has a magnetic tape threading and transport apparatus including multi-surface, multi-radius air bearing blocks for transporting magnetic tape in a helical path around a tilted rotary head scanner. Vacuum walls located on either side of the rotary head scanner assist in threading the magnetic tape from a magnetic tape cassette around the rotary head scanner. The air bearing blocks are moved into position contiguous to the rotary head scanner after the vacuum threading operation is completed. The vacuum walls have longitudinal slots which are substantially coextensive with the extent of the air bearing blocks. A vacuum sensor is positioned at the end of the slots away from the rotary head scanner so that the sensor is only actuated when the tape is against the whole length of the wall. This prevents damage to the tape when the air bearing blocks are moved behind the threaded tape.
First Claim
all claims..Other Claims data not available
Family
- No Family data available.
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
DATATAPE INCORPORATED | 360 SIERRA MADRE VILLA PASADENA CA 91009 |
International Classification(s)

- 1992 Application Filing Year
- G11B Class
- 1618 Applications Filed
- 784 Patents Issued To-Date
- 48.46 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Grant, Frederic F | Bellflower, CA | 32 | 312 |
# of filed Patents : 32 Total Citations : 312 | |||
Hierman, Garry | Alta Dena, CA | 1 | 5 |
# of filed Patents : 1 Total Citations : 5 |
Cited Art Landscape
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Patent Citation Ranking
- 5 Citation Count
- G11B Class
- 5.84 % this patent is cited more than
- 31 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Jan 26, 2018 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jun 14, 1998 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jun 14, 1998 |
Jun 14, 1998 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Jul 21, 1994 | AS | ASSIGNMENT | free format text: SECURITY INTEREST;ASSIGNOR:DATATAPE INCORPORATED;REEL/FRAME:007074/0609 Owner name: CONGRESS FINANCIAL CORPORATION (WESTERN), CALIFORN Effective Date: Jul 21, 1994 |
Jun 14, 1994 | I | Issuance | |
Dec 09, 1993 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Dec 03, 1993 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Jun 16, 1992 | AS | ASSIGNMENT | free format text: CORRECTION OF ASSIGNMENT RECORDED AT REEL 6356, FRAMES 803-810.;ASSIGNORS:GRANT, FREDERIC F.;HIERMAN, GARRY C.;REEL/FRAME:006796/0794 Owner name: DATATAPE INCORPORATED, CALIFORNIA Effective Date: Jun 16, 1992 |
Jun 16, 1992 | AS | ASSIGNMENT | free format text: CORRECTION OF ASSIGNMENT RECORDED AT REEL 6356, FRAMES 004. TO CORRECT ASSIGNEE.;ASSIGNORS:GRANT, FREDERIC FRANCIS;HIERMAN, GARY C.;REEL/FRAME:006473/0803 Owner name: DATATAPE INCORPORATED, NEW YORK Effective Date: Jun 16, 1992 |
May 14, 1992 | F | Filing | |
May 14, 1992 | PD | Priority Date | |
May 14, 1992 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:GRANT, FREDERIC FRANCIS;HIERMAN, GARRY C.;REEL/FRAME:006356/0004 Owner name: EASTMAN KODAK COMPANY, NEW YORK Effective Date: May 14, 1992 |

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