US3800322A — Tape recorder and magnetic tape cassette with mov…

Claim 1

Independent Claim 411 words

In combination, a tape recorder and a magnetic tape cassette, said cassette having a substantially rectangular housing having a bottom wall, a top wall and side walls and containing one or more reels adapted to carry packs of magnetic tape, the reels and magnetic tape being driven by spindles and capstans provided on the tape recorder and adapted to pass through openings in the bottom and/or top walls of the cassette, the recording and reproduction of signals after the cassette has been placed in position on the recorder being effected by tape-scanning means on the recorder and which, together with at least one pressure roller, are adapted to pass through at least one opening in the front wall of the cassette to bear against the magnetic tape passing along said front wall on the inside thereof, wherein there are provided in the cassette movable tensioning means for the tape and movable brake means for the reels, and said tensioning means and said brake means being spring-loaded towards a first position so as to assume said position when the cassette is removed from the recorder; said tape tensioning means having two tensioning levers which are hingedly mounted near the front wall of the cassette to pivot in the plane of the cassette, and said reel brake means having two brake portions opposite said two reels, respectively; each of said tensioning levers being located in the first position of said tensioning means, around a corresponding opening in the cassette housing for the admission of a corresponding guide roll on the recorder, in gripping relationship to said tape so as to hold said tape taut in a plane parallel to the front wall of the cassette, and each said brake portion being located, in the first position of said brake means, in flange-gripping relationship to the corresponding reel so as to prevent said reel from turning in at least one direction and wherein there are provided means on the recorder designed to pass through apertures in the bottom wall and/or top wall of the cassette for moving said tensioning means and said brake means, when the cassette is placed on the recorder, to a second position in which said tensioning levers release said tape and said brake portions release said reels and in which reel guidance, and also tape guidance at least along said front wall, are effected exclusively by means, including said guide rolls, provided on the recorder independently of the cassette housing.

Claim 2

Dependent Claim 411 words

In combination, a tape recorder and a magnetic tape cassette, said cassette having a substantially rectangular housing having a bottom wall, a top wall and side walls and containing one or more reels adapted to carry packs of magnetic tape, the reels and magnetic tape being driven by spindles and capstans provided on the tape recorder and adapted to pass through openings in the bottom and/or top walls of the cassette, the recording and reproduction of signals after the cassette has been placed in position on the recorder being effected by tape-scanning means on the recorder and which, together with at least one pressure roller, are adapted to pass through at least one opening in the front wall of the cassette to bear against the magnetic tape passing along said front wall on the inside thereof, wherein there are provided in the cassette movable tensioning means for the tape and movable brake means for the reels, and said tensioning means and said brake means being spring-loaded towards a first position so as to assume said position when the cassette is removed from the recorder; said tape tensioning means having two tensioning levers which are hingedly mounted near the front wall of the cassette to pivot in the plane of the cassette, and said reel brake means having two brake portions opposite said two reels, respectively; each of said tensioning levers being located in the first position of said tensioning means, around a corresponding opening in the cassette housing for the admission of a corresponding guide roll on the recorder, in gripping relationship to said tape so as to hold said tape taut in a plane parallel to the front wall of the cassette, and each said brake portion being located, in the first position of said brake means, in flange-gripping relationship to the corresponding reel so as to prevent said reel from turning in at least one direction and wherein there are provided means on the recorder designed to pass through apertures in the bottom wall and/or top wall of the cassette for moving said tensioning means and said brake means, when the cassette is placed on the recorder, to a second position in which said tensioning levers release said tape and said brake portions release said reels and in which reel guidance, and also tape guidance at least along said front wall, are effected exclusively by means, including said guide rolls, provided on the recorder independently of the cassette housing.

Claim 3

Dependent Claim 87 words

A magnetic tape cassette as set forth in claim 1, wherein openings are provided in the bottom and top walls of the cassette near its front wall for the joint admission of capstans and tape guide elements, a further opening being provided for the admission of at least one tape damping roll, one magnetic head screening shield and one pressure pad, and further openings are provided in the bottom and top walls for the admission of the tape guide rolls and the actuating pins on the recorder.

Claim 4

Dependent Claim 57 words

A tape recorder as set forth in claim 1, wherein said guide means for the reels consist of compression springs provided on the spindles of the recorder, said springs being compressed in the splined holes of the reel hubs when the cassette is placed in position on the recorder and remaining so until the cassette is removed.

Claim 5

Dependent Claim 41 words

The combination as set forth in claim 1, wherein said guide means comprise holding means provided on the recorder, which means press down on the reel hubs of the cassette after the latter has been placed in position on the recorder.

Claim 6

Dependent Claim 81 words

A tape recorder for use with the magnetic tape cassette set forth in claim 1, wherein members which are rigidly attached to a magnetic-head plate capable of movement toward the magnetic tape moved with said magnetic-head plate to bear against tape guide elements on the recorder, to which end they extend beyond the tape inside or outside openings in those parts of the cassette housing which are adjacent to the front wall of said housing and which protect the magnetic tape.

Claim 7

Dependent Claim 91 words

The combination aS set forth in claim 1, wherein members rigidly attached to a magnetic-head plate are provided with pins on the recorder which are adapted to firt into bores in the tape guide pins after passing through recesses in the front wall of the cassette housing within parts of the cassette housing and above the magnetic tape, while that edge of the magnetic-head plate which faces the cassette is adapted to fit into grooves in said tape guide pins below the magnetic tape and outside parts of the cassette housing.

Claim 8

Dependent Claim 272 words

A magnetic tape cassette which comprises a substantially rectangular housing having a bottom wall, a top wall and side walls and containing one or more reels adapted to carry packs of magnetic tape, said cassette further including openings for accommodating the spindles and/or capstans of a tape recorder, said cassette still further including at least one opening in its front wall for accomodating a tape scanning means and pressure roller carried by said tape recorder, said opening in the front wall being arranged so that said pressure roller bears against the magnetic tape passing along the front wall of said cassette and on the inside thereof; said cassette still further including tensioning means for the tape and brake means for the reels, both said means being movable between a first and second position, said tensioning means and said brake means being spring-loaded towards said first position; said tape tensioning means having two tensioning levers which are hingedly mounted near the front wall of the cassette to pivot in the plane of the cassette, and said reel brake means having two brake portions opposite said two reels, respectively; each of said tensioning levers being located, in the first position only of said tensioning means, in gripping relationship to said tape around a corresponding opening in the cassette housing for the admission of a corresponding guide roll on the recorder, so as to hold said tape in place, and each said brake portion being located, in the first position only of said brake means, in flange-gripping relationship to the corresponding reel so as to prevent said reel from turning in at least one direction.

Claim 9

Dependent Claim 272 words

A magnetic tape cassette which comprises a substantially rectangular housing having a bottom wall, a top wall and side walls and containing one or more reels adapted to carry packs of magnetic tape, said cassette further including openings for accommodating the spindles and/or capstans of a tape recorder, said cassette still further including at least one opening in its front wall for accomodating a tape scanning means and pressure roller carried by said tape recorder, said opening in the front wall being arranged so that said pressure roller bears against the magnetic tape passing along the front wall of said cassette and on the inside thereof; said cassette still further including tensioning means for the tape and brake means for the reels, both said means being movable between a first and second position, said tensioning means and said brake means being spring-loaded towards said first position; said tape tensioning means having two tensioning levers which are hingedly mounted near the front wall of the cassette to pivot in the plane of the cassette, and said reel brake means having two brake portions opposite said two reels, respectively; each of said tensioning levers being located, in the first position only of said tensioning means, in gripping relationship to said tape around a corresponding opening in the cassette housing for the admission of a corresponding guide roll on the recorder, so as to hold said tape in place, and each said brake portion being located, in the first position only of said brake means, in flange-gripping relationship to the corresponding reel so as to prevent said reel from turning in at least one direction.

Claim 10

Dependent Claim 71 words

A tape recorder for use with the magnetic tape cassette set forth in claim 7, wherein the tape tensioning levers and the brake portions are moved to their second position by means of pin-carrying rods attached to the cover-plate of the recorder, the pins thereof being adapted to pass through openings provided in the cassette in the bottom and top walls thereof above the tape tensioning levers and the brake member.

Claim 11

Dependent Claim 65 words

A magnetic tape cassette as set forth in claim 7, wherein the tape tensioning levers and brake portions are in the form of levers having two rigidly connected arms each, one of which arms is located, in the first position, round the openings for the guide rolls of the records, while the other arm, in said first position, bears against the flanges of the reels.

Claim 12

Dependent Claim 64 words

A magnetic tape cassette as set forth in claim 7, wherein the tape tensioning levers are each formed by two hingedly interconnected levers, and a brake member, common to both reels and including said two portions, is located relative to the said interconnected levers such that when the brake member is displaced by means of a pin on the recorder both levers are actuated.

Claim 13

Dependent Claim 79 words

A magnetic tape cassette as set forth in claim 10, wherein the ratio of the spring load on the tape tensioning levers to that on the brake member as well as the spatial arrangement of the tensioning levers, brake member and actuating pin on the recorder are so selected that when the tape tensioning levers and the brake member are moved to their second position the reels are released before the magnetic tape is released by the tensioning levers.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1977-03-25	1977-09-24	1978-03-26	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1981-03-25	1981-09-24	1982-03-26	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1985-03-25	1985-09-24	1986-03-26	$7700.00	Window Closed / Lapsed

Tape recorder and magnetic tape cassette with movable tensioning and brake means

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