Olympus Optical Company, Ltd.

Goro Kitajima

Sinichi Saitou

Shigeru Nemoto

Naohiro Hanaoka

Mitsuo Nasu

Hazime Osada

Akiteru Kimura

Minoru Kobayashi

Kazuyasu Motoyama

Makoto Kondo

Tokuo Shimizu

Masaaki Daigaku

Yoshio Tomizawa

Hajime Osada

An armature, a method for producing the armature and a mold for molding the same are so configured that the coil pitch of each of phase coils is set to a value of 125% or less of the pole pitch, the gap between the respective phase coils of any one of layers is so disposed as to face the intenral space of each of the phase coils of the other layer being contact with that layer, and the registering face of the mold for molding the periphery of the armature is so formed as to be parallel with the axial direciton of the armature.

Method of producing a coreless armature

A mold for forming coreless armatures having an upper mold and a lower mold. The lower mold has a mold cavity for receiving a shaft capable of supporting windings of a coreless armature. An elastic ring plate is placed between the upper and lower molds and is adapted for being compressed therebetween. The elastic ring plate is further adapted to contact terminal ends of the windings as they extend outside of the mold cavity, and to seal said mold cavity with the terminal ends extending therefrom.

Mold for forming a coreless armature

An armature, a method for producing the armature and a mold for molding the same are so configured that the coil pitch of each of phase coils is set to a value of 125% or less of the pole pitch, the gap between the respective phase coils of any one of layers is so disposed as to face the intenral space of each of the phase coils of the other layer being contact with that layer, and the registering face of the mold for molding the periphery of the armature is so formed as to be parallel with the axial direction of the armature.

Molded armature

A magnetic recording tape driving apparatus comprises a motor, two pairs of reel shafts on which a pair of reel hubs of each of two cassette tapes are mounted, two capstans for the two cassette tapes, a head base plate supporting two magnetic heads and two pinch rollers each provided in a position corresponding to each pair of the reel shafts and movable between a first position, at which the magnetic heads and the pinch roller are all spaced apart from the magnetic tapes accommodated in the respective paired cassette tapes with the reel hubs thereof mounted on the two pairs of reel shafts, and a second position, at which the magnetic heads and the pinch rollers are all in contact with the magnetic tapes accommodated in the paired cassette tapes, and a gear train for selectively transmitting rotational power from the motor to the two capstans and the two pairs of reel shafts.

Magnetic recording tape driving apparatus

An operating lever device for a magnetic recording tape transport apparatus which uses a tape cassette and which sets a magnetic recording tape transport mode in response to an electrical signal from signal generator, comprises a first base plate, a second base plate parallel to the first base plate with a distance therebetween, a first operating lever disposed between the base plates to be movable along the base plates between a first position to stop the signal from the generator and a second position in which the generator is allowed to generate the signal, a second operating lever disposed between the base plates to be movable along the base plates between first and second positions and parallel to the moving direction of the first operating lever, an auxiliary operating lever disposed between the base plates to be movable along the base plates among first, second, third and fourth positions and perpendicularly to a direction of movement of the first and second operating levers, the auxiliary operating lever in the first position thereof being spaced apart from the first and second operating levers located in the first positions thereof in the direction of movement of the first and second operating levers from the first position to the second position thereof, the auxiliary operating lever in the second position thereof being engaged with the first operating lever located at the second position thereof, the auxiliary operating lever in the third position.

Operating lever device of magnetic recording tape transport apparatus

An operating lever device for a magnetic recording tape driving apparatus which comprises a first base plate, a second base plate disposed parallel to the first base plate, and an operating lever disposed between the base plates so as to be able to move along the base plates between first and second positions. A signal generator is caused to produce an electric signal when the operating lever is located in the second position, and when a tape cassette is set on the second base plate so that a magnetic recording tape is driven in accordance with the electric signal by a motor with the aid of a pair of reel shafts. The operating lever device features a moving member disposed between the base plates so as to be able to move slidably along the base plates between first and second positions, and having one end portion which is located outside the space between the base plates so as not to face the tape cassette when the moving member moves between the first and second positions thereof, and a coupling member located between one plane including the surface of the operating lever which faces the second base plate and the other plane including the surface of the second base plate which faces the tape cassette. The coupling member is coupled with the one end portion of the operating lever which is located outside the space between the base plates when the operating lever moves between the first and second positions, and the one end portion of the moving member so as to shift the moving member from the first position to the second position thereof as the operating lever moves from the first position to the second position thereof. The moving member shifts from the second position to the first position thereof as the operating lever moves from the second position to the first position thereof.

Operating lever device of a magnetic recording tape driving apparatus

A signal detection operating lever device comprises a first base plate, a second base plate parallel to the first base plate, a first operating lever between the base plates movable between a first position in which signal generator stops generating signal to stop running of a recording tape and a second position in which the signal generator generates the signal to determine a recording tape transport mode in the tape recorder, a second operating lever having a magnetic head and disposed between the base plates to move the magnetic head between a first position in which the head is separated from a tape and a second position in which the head comes in contact with the tape, an accidental erasure preventive lever movable between a first position in which the second operating lever is prohibited to move from the first position to the second position thereof, and a second position in which the second operating lever is allowed to move from the first position to the second position thereof, a third operating lever between the base plates movable between a first position which allows movement of the accidental erasure preventive lever between the first and second positions thereof, and a second position in which the accidental erasure preventing lever is kept at the second position thereof, a function selecting switch connected to the second and third operating levers for allowing the head to function as an erase head upon movement of the second operating lever to the second position thereof and for allowing the head to function as a signal detecting head upon movement of the third operating lever to the second position thereof.

Signal detection operating lever device of magnetic recording tape

An apparatus for moving the pinch roller and the magnetic head of a tape recorder into their operative positions comprises a small size motor which supplies a drive to a pair of drive and driven members such as the combination of a pinion and a rack. The drive is transmitted via the pair of members to a movable member which carries the pinch roller and magnetic head, thus moving the pinch roller and the magnetic head to their operative positions.

Growing community of inventors

Tokyo, Japan

Goro Kitajima