Inventor
GRANT FREDERIC F
US36 patents
⚠️ This page may combine multiple inventors who share the name “GRANT FREDERIC F”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DATATAPE INC
20 patentsUS4984108AJan 8, 1991
Apparatus for transporting magnetic tape cassettes of different sizes
DATATAPE INC45 citations91
US4891720AJan 2, 1990
Belt drive system for a magnetic tape cassette transport/accessor
DATATAPE INC25 citations91
US5003424AMar 26, 1991
Apparatus for changing the helix angle of magnetic tape relative to a rotary head scanner
DATATAPE INC10 citations74
US5003417AMar 26, 1991
Spring dampener assembly for a sprocket driven belt drive system
DATATAPE INC14 citations74
US4991041AFeb 5, 1991
Apparatus for moving a cassette between storage and receiving locations
DATATAPE INC14 citations74
US4967290AOct 30, 1990
Multiple channel rotary magnetic head scanner having stackable electro-optical signal transmission modules
DATATAPE INC9 citations74
US4947069AAug 7, 1990
Low power magnetic tape reel motor and brake assembly
DATATAPE INC7 citations74
US4779150AOct 18, 1988
Pneumatically controlled tape-loading tape-transporting apparatus
DATATAPE INC11 citations74
US4772969ASep 20, 1988
"Expandable loop" method of and apparatus for automatically threading a web material
DATATAPE INC11 citations74
US4763210AAug 9, 1988
Helical scan tape guide apparatus
DATATAPE INC15 citations74
US4991038AFeb 5, 1991
Automatic threading of a web using a flexible threading band
DATATAPE INC12 citations73
US4819096AApr 4, 1989
Rotary head scanner including anamorphic beam-shaping apparatus in an optical signal-transmission channel
DATATAPE INC9 citations72
US4826097AMay 2, 1989
Reel spindle apparatus with internal clamping member
DATATAPE INC14 citations71
US5321566AJun 14, 1994
Magnetic tape threading and transport apparatus including a sensor for controlling air bearing block movement
DATATAPE INC10 citations66
US5044574ASep 3, 1991
Reel hub latch assembly
DATATAPE INC2 citations63
US4592522AJun 3, 1986
Coaxial reel assembly apparatus
DATATAPE INC4 citations63
US4442963AApr 17, 1984
Tape advancing method and apparatus with fast tape advance mode
DATATAPE INC3 citations63
US5243477ASep 7, 1993
Apparatus for threading magnetic tape from a single reel cartridge in a rotary head tape transport
DATATAPE INC4 citations62
US4984107AJan 8, 1991
Apparatus for transporting a magnetic tape cassette
DATATAPE INC5 citations60
US5184258AFeb 2, 1993
Helical scan magnetic tape recorder with capstan assisted vacuum threading
DATATAPE INC0 citations35
BELL & HOWELL CO
9 patentsUS4403720ASep 13, 1983
Bidirectional tape advancing method and apparatus
BELL & HOWELL CO26 citations82
US4267951AMay 19, 1981
Tape guiding method and apparatus
BELL & HOWELL CO20 citations81
US4216505AAug 5, 1980
Transducer head vibration dampening
BELL & HOWELL CO28 citations81
US4514055AApr 30, 1985
Information transferring systems operating on a recording medium
BELL & HOWELL CO13 citations74
US4354644AOct 19, 1982
Reel mounting methods and apparatus
BELL & HOWELL CO15 citations74
US4194661AMar 25, 1980
Tape advancing methods and apparatus
BELL & HOWELL CO11 citations74
US3966190AJun 29, 1976
Sheet advancing methods and apparatus
BELL & HOWELL CO13 citations74
US4316568AFeb 23, 1982
Methods and apparatus for guiding tape
BELL & HOWELL CO9 citations71
US4431125AFeb 14, 1984
Tape advancing method and apparatus with fast tape advance mode
BELL & HOWELL CO1 citations52