Patent US3978522A successfully refreshed from Google Patents.
US3978522A
Expired / Lapsed
US
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Method and apparatus for mounting a cassette record-playback head
Assignee: AT&T Teletype Corp
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Filing: 1975-10-06
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Granted: 1976-08-31
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Expires: 1995-10-06
Abstract
Abstract An apparatus and method for accurately locating a record-playback head with respect to a tape carried within a conventional tape cassette. The cassette is oriented within a cradle by means of a pair of parallel guide pins which engage the alignment openings of the cassette. A playback-record head is mounted upon a mounting clip which defines a U in cross-section having a record-playback head mounting leg and an alignment leg. The alignment leg defines two alignment surfaces which cooperate with the guide pins to accurately position the clip and the record-playback head carried thereon with respect to the cradle and a cassette carried therein.
Inventors
- 👤 Kurt Rothlisberger
- 👤 Richard F. Vee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:58
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/50; G11B15/00; G11B15/675
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
154 words
An apparatus for accurately positioning a record-playback head with respect to an informational-tape carried within a tape cassette positioned on a cassette recorder comprising: a pair of spacially oriented axially parallel cassette guide pins which serve to accurately locate the cassette in the recorder; a support member including means for mounting the playback-record head in a fixed, predetermined position thereon; said support member including means defining a pair of reference surfaces each being engaged with one of said cassette guide pins so that said mounting means is oriented with respect to said guide pins and thus a playback-record head carried thereon will be oriented with respect to the informational tape carried within the cassette; means mounting said cradle for pivotal movement; said cradle including a substantially planar wall with the plane thereof substantially parallel to the plane of a cassette received therein and means securing said support member to said wall of said cradle.
Claim 2
Independent Claim
154 words
An apparatus for accurately positioning a record-playback head with respect to an informational-tape carried within a tape cassette positioned on a cassette recorder comprising: a pair of spacially oriented axially parallel cassette guide pins which serve to accurately locate the cassette in the recorder; a support member including means for mounting the playback-record head in a fixed, predetermined position thereon; said support member including means defining a pair of reference surfaces each being engaged with one of said cassette guide pins so that said mounting means is oriented with respect to said guide pins and thus a playback-record head carried thereon will be oriented with respect to the informational tape carried within the cassette; means mounting said cradle for pivotal movement; said cradle including a substantially planar wall with the plane thereof substantially parallel to the plane of a cassette received therein and means securing said support member to said wall of said cradle.
Claim 3
Dependent Claim
156 words
The apparatus of claim 1 wherein said cradle wall includes at least one opening positioned to allow said guide pins to pass therethrough into the cavity defined by said cradle as the cradle is pivoted between a first loading position whereat said cradle and reference surfaces are out of engagement with said pins and a second operating position whereat said reference surfaces are engaged with said guide pins; a portion of said support member being folded thereby defining two substantially parallel legs, the facing surfaces of the legs of said folded support member being spaced to engage opposing faces of said rear cradle wall; and means for adjusting the spacing of said parallel legs of said folded support member so that the opposing surfaces of said parallel legs may be brought into selective compressive contact with the rear wall of the cradle so as to sandwich the rear wall between the facing surface of said legs.
Claim 4
Dependent Claim
50 words
The apparatus of claim 2 wherein one of said legs of said folded support member defines a pair of oppositely projecting ears which define said reference surfaces, each of said reference surfaces engages one of said pins thereby serving to orient said support member with respect to the guide pins.
Claim 5
Dependent Claim
35 words
The apparatus of claim 3 wherein said support member includes a bracket having a shape for embracing a playback-record head, said bracket including means for relatively positioning said bracket with respect to said reference surfaces.
Claim 6
Independent Claim
103 words
An apparatus for mounting a playback-record head upon a cassette recorder having at least one guide pin to accurately locate a cassette in the recorder comprising: a support member including means for securely retaining a playback-record head in a fixed, predetermined position thereon; said support member including means defining at least one alignment surface for engagement with said guide pin and said support member being folded thereby defining a bite having two parallel legs and means for adjusting, the spacing of the facing surfaces of said legs to compressively embrace a portion of the recorder for securing the support member to the recorder.
Claim 7
Independent Claim
103 words
An apparatus for mounting a playback-record head upon a cassette recorder having at least one guide pin to accurately locate a cassette in the recorder comprising: a support member including means for securely retaining a playback-record head in a fixed, predetermined position thereon; said support member including means defining at least one alignment surface for engagement with said guide pin and said support member being folded thereby defining a bite having two parallel legs and means for adjusting, the spacing of the facing surfaces of said legs to compressively embrace a portion of the recorder for securing the support member to the recorder.
Claim 8
Dependent Claim
26 words
The apparatus of claim 5 wherein the recorder has two guide pins and said alignment means include two alignment surfaces for cooperation with the guide pins.
Claim 9
Independent Claim
147 words
A method for orienting a record-playback head carried on a folded clip defining a pair of generally flat parallel legs with respect to a cassette recorder having at least one guide pin for locating the cassette, and a pivotably mounted cradle for supporting a cassette, the cradle including a rear wall defining an opening therein, one leg of said clip defining at least one alignment surface, comprising the steps of: sliding the bite defined by said clip over the rear wall of the pivotably mounted cradle; pivoting the cradle to cause the guide pin to pass through the opening in the rear wall of the cradle; sliding the clip on the rear cradle wall until the alignment surface rests on the guide pin; and securing the folded clip to the rear wall of the cradle by reducing the size of the bite defined by said clip legs.
Claim 10
Independent Claim
147 words
A method for orienting a record-playback head carried on a folded clip defining a pair of generally flat parallel legs with respect to a cassette recorder having at least one guide pin for locating the cassette, and a pivotably mounted cradle for supporting a cassette, the cradle including a rear wall defining an opening therein, one leg of said clip defining at least one alignment surface, comprising the steps of: sliding the bite defined by said clip over the rear wall of the pivotably mounted cradle; pivoting the cradle to cause the guide pin to pass through the opening in the rear wall of the cradle; sliding the clip on the rear cradle wall until the alignment surface rests on the guide pin; and securing the folded clip to the rear wall of the cradle by reducing the size of the bite defined by said clip legs.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |