Patent US1479271A successfully refreshed from Google Patents.
US3661397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Addressing mechanism
Assignee: Revvity Inc
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Filing: 1969-07-25
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Granted: 1972-05-09
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Expires: 1989-07-25
Abstract
Abstract A device for retrieving selected informational material stored in a groove formed in a rotatable recording element. A stylus, which is disposed above the recording element, is mounted at a fixed, reference position to a transport mechanism which may be moved to position the stylus over that portion of the groove at which the particular information is stored. The device then lowers the stylus into the groove. When in the lowered position, the stylus is permitted limited freedom of movement so that it may track in the groove as the recording element is rotated. After the desired information has been retrieved the stylus is raised to the reference position.
Inventors
- 👤 Edward L Worth
- 👤 Allan B Chertok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:26
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/34; G11B3/36; G11B3/08; G11B3/095
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
294 words
An apparatus for tracking selected turns of a groove formed on a rotatably supported phonographic recording element comprising: means for rotatably supporting said recording element; a stylus; means For moving said stylus in a first direction toward and away from said grooved surface of said supported recording element between a first remote position and a second, groove engaging position; means for imparting primary traversing movement to said stylus in a second direction while said stylus is in said first position, to enable said stylus to be positioned in spaced registry with a selected turn of said groove so that said stylus thereafter may be moved to said second position into engagement with said selected turn of said groove; a movable stylus arm for mounting said stylus, said means for moving said stylus toward and away from said recording element comprising, a drive rod mounted for vertical movement and engageable with said stylus arm to effect vertical movement of said stylus arm, and drive means connected to said rod for effecting said movement; and wherein the upper end of said rod is of reduced diameter and wherein said stylus arm has an opening formed therein to receive the reduced end of said rod, said opening being substantially larger than the diameter of the reduced end of said rod and smaller than the unreduced diameter of the rod, said drive means imparting sufficient vertical motion to said arm so that in the upper position of said rod the rod is tightly engaged with the opening in said arm, inhibiting horizontal secondary motion of said arm, and in the lower position of said rod, the opening in said arm is loosely engaged with the reduced portion of said rod allowing limited horizontal secondary motion of said arm.
Claim 2
Independent Claim
294 words
An apparatus for tracking selected turns of a groove formed on a rotatably supported phonographic recording element comprising: means for rotatably supporting said recording element; a stylus; means For moving said stylus in a first direction toward and away from said grooved surface of said supported recording element between a first remote position and a second, groove engaging position; means for imparting primary traversing movement to said stylus in a second direction while said stylus is in said first position, to enable said stylus to be positioned in spaced registry with a selected turn of said groove so that said stylus thereafter may be moved to said second position into engagement with said selected turn of said groove; a movable stylus arm for mounting said stylus, said means for moving said stylus toward and away from said recording element comprising, a drive rod mounted for vertical movement and engageable with said stylus arm to effect vertical movement of said stylus arm, and drive means connected to said rod for effecting said movement; and wherein the upper end of said rod is of reduced diameter and wherein said stylus arm has an opening formed therein to receive the reduced end of said rod, said opening being substantially larger than the diameter of the reduced end of said rod and smaller than the unreduced diameter of the rod, said drive means imparting sufficient vertical motion to said arm so that in the upper position of said rod the rod is tightly engaged with the opening in said arm, inhibiting horizontal secondary motion of said arm, and in the lower position of said rod, the opening in said arm is loosely engaged with the reduced portion of said rod allowing limited horizontal secondary motion of said arm.
Claim 3
Dependent Claim
100 words
An apparatus as defined in claim 4 wherein the reduced end of said rod is of a tapered configuration, said apparatus further comprising: means limiting the extent of downward movement of said rod so that when said stylus has been lowered into engagement with said recording element, a portion of said tapered end of said rod will protrude into said opening and will be in spaced relation to the internal walls of said opening; said spacing between said opening and the tapered portion of said rod disposed therein comprising said means limiting the extent of secondary movement of said stylus.
Claim 4
Dependent Claim
41 words
An apparatus as defined in claim 1 wherein the engagement of said rod with said opening in said recording arm comprises said means precluding said secondary freedom of traversing movement of said stylus when said stylus is in said first position.
Claim 5
Independent Claim
375 words
An apparatus for tracking selected grooves formed on a rotatably supported phonographic recording element comprising: means for rotatably supporting said recording element; an arm; a stylus mounted to one end of said arm; a housing; means connecting the other end of said arm to said housing to enable said stylus on said one end to move in a vertical and a traversing direction with respect to said housing; a vertically extending drive rod mounted to said housing for vertical movement, the upper end of said drive rod being reduced in diameter and being engageable with said arm at a location intermediate said stylus and the connection of said arm to said housing; said arm having an opening formed therein which is receptive to said reduced diameter upper end of said rod, said opening being of smaller dimension than the unreduced lower portions of said rod so that said rod may be urged upwardly until a portion of said rod is in full, snug engagement with said opening whereby further vertical movement of said rod will urge said arm and stylus upwardly about said connection toward a first position in which said stylus is spaced vertically above said recording element, said snug engagement of said rod with said opening in this first position precluding traversing movement of said arm and said stylus with respect to said housing; said rod being movable downwardly to a position in which said stylus is in a lowered, groove engaging position and in which said end of said rod is withdrawn downwardly from said snug engagement thereof with only the reduced portion of said rod remaining within the opening in said arm thereby enabling said arm and stylus to have traversing freedom of movement to enable said stylus to track freely within the groove of said recording element; drive means for moving said rod in the vertical direction to effect said engagements; and means for moving said housing along a traversing direction while said stylus is in said first, remote position to enable said stylus to be positioned in registry with a selected turn in the groove of said recording element whereby subsequent downward movement of said rod will lower said stylus into engagement with said selected turn of said groove.
Claim 6
Independent Claim
375 words
An apparatus for tracking selected grooves formed on a rotatably supported phonographic recording element comprising: means for rotatably supporting said recording element; an arm; a stylus mounted to one end of said arm; a housing; means connecting the other end of said arm to said housing to enable said stylus on said one end to move in a vertical and a traversing direction with respect to said housing; a vertically extending drive rod mounted to said housing for vertical movement, the upper end of said drive rod being reduced in diameter and being engageable with said arm at a location intermediate said stylus and the connection of said arm to said housing; said arm having an opening formed therein which is receptive to said reduced diameter upper end of said rod, said opening being of smaller dimension than the unreduced lower portions of said rod so that said rod may be urged upwardly until a portion of said rod is in full, snug engagement with said opening whereby further vertical movement of said rod will urge said arm and stylus upwardly about said connection toward a first position in which said stylus is spaced vertically above said recording element, said snug engagement of said rod with said opening in this first position precluding traversing movement of said arm and said stylus with respect to said housing; said rod being movable downwardly to a position in which said stylus is in a lowered, groove engaging position and in which said end of said rod is withdrawn downwardly from said snug engagement thereof with only the reduced portion of said rod remaining within the opening in said arm thereby enabling said arm and stylus to have traversing freedom of movement to enable said stylus to track freely within the groove of said recording element; drive means for moving said rod in the vertical direction to effect said engagements; and means for moving said housing along a traversing direction while said stylus is in said first, remote position to enable said stylus to be positioned in registry with a selected turn in the groove of said recording element whereby subsequent downward movement of said rod will lower said stylus into engagement with said selected turn of said groove.
Claim 7
Dependent Claim
100 words
An apparatus as defined in claim 4 wherein said reduced end of said rod is of a tapered configuration, said apparatus further comprising: means limiting the extent of downward movement of said rod so that when said stylus has been lowered into engagement with said recording element, a portion of said tapered end of said rod will protrude into said opening and will be disposed in spaced relation to the internal perimetric surface of said opening; said spacing between said opening and the tapered portion of said rod disposed therein limiting the extent of secondary traversing movement of said stylus.
Claim 8
Dependent Claim
60 words
An apparatus as defined in claim 4 wherein said connection between said arm and said housing comprises: an upstanding shaft journalled to said housing and extending upwardly therefrom for rotation about a vertical axis; means connecting said arm to the upper end of said shaft at a pivotal connection to permit vertical movement of the stylus end of said arm.
Claim 9
Dependent Claim
77 words
An apparatus as defined in claim 4 wherein said means for moving said housing along said traversing direction comprises: a worm shaft mounted for rotation about an axis disposed in a traversing direction; means mounting said housing to said worm shaft for movement paralleling the axis of said shaft; and a tooth secured to said housing and in engagement with said worm shaft so that rotation of said shaft will move said housing in a traversing direction.
Claim 10
Dependent Claim
54 words
An apparatus as defined in claim 7 wherein said worm shaft is driven by a precision stepping motor to enable said housing to be driven to a precise position along said worm shaft thereby enabling said stylus to be positioned in registry with a selected turn of the groove in said supported recording element.
Claim 11
Dependent Claim
73 words
An apparatus as defined in claim 4 wherein said means for effecting said vertical movement of said rod comprises: a scotch yoke secured to the lower end of said rod; and motor means secured to said housing and being engageable with said scotch yoke to drive said yoke between an upper and lower position, said upper and lower positions of said yoke corresponding to said upper and lower positions of said drive rod.
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |