US3731999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filmstrip viewer attachment for tape recorder
Assignee: Individual
•
Filing: 1971-03-04
•
Granted: 1973-05-08
•
Expires: 1991-03-04
Abstract
Abstract A filmstrip viewer which is removably mounted to and driven by a tape recorder, particularly of the cassette type, to provide a system for presenting synchronized pictures and sound. A drive shaft in the viewer is removably connectable to and driven in synchronism with the spool of a tape cassette, cartridge or reel loaded on the tape recorder. The drive shaft is geared to sprocket wheels which advance the filmstrip through the viewer, and the gearing provides for frame-by-frame advancement with an appropriate time delay for the incorporation of the sound presentation. The viewer may also be provided with an improved lamp socket, an automatic illumination switch, and with manual means for advancing and adjusting the filmstrip position.
Inventors
- 👤 D Ventre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:57
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/08; G03B23/12; G03B35/00; G03B35/18; G03B35/24
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
121 words
A filmstrip viewer adapted for removable mounting to a tape recorder and being driven from a spool of a tape supply member loaded on the tape recorder to provide synchronized audiovisual presentations, comprising, in combination: A. an enclosure including means for guiding a filmstrip therethrough over a predetermined path, B. support means for removably supporting said enclosure on the tape recorder, C. viewing means in said enclosure permitting the viewing of the filmstrip as it passes through said viewer, D. advancing means for moving the filmstrip in a frame-by-frame sequence through said viewer, and E. driving means removably connectable to said spool and geared to said advancing means to actuate said advancing means in synchronism with the motion of said spool.
Claim 2
Dependent Claim
121 words
A filmstrip viewer adapted for removable mounting to a tape recorder and being driven from a spool of a tape supply member loaded on the tape recorder to provide synchronized audiovisual presentations, comprising, in combination: A. an enclosure including means for guiding a filmstrip therethrough over a predetermined path, B. support means for removably supporting said enclosure on the tape recorder, C. viewing means in said enclosure permitting the viewing of the filmstrip as it passes through said viewer, D. advancing means for moving the filmstrip in a frame-by-frame sequence through said viewer, and E. driving means removably connectable to said spool and geared to said advancing means to actuate said advancing means in synchronism with the motion of said spool.
Claim 3
Dependent Claim
84 words
A filmstrip viewer as defined in claim 1 wherein said advancing means comprises a pair of sprocket wheels journalled adjacent said path in position to engage the sprocket holes on the filmstrip, said driving means comprising a drive shaft protruding at one end from said enclosure and carrying at said one end a fitting removably connectable with said spool, the other end of said drive shaft being geared to said sprocket wheels whereby said sprocket wheels can be driven in synchronism with said spool.
Claim 4
Dependent Claim
25 words
a drive train coupling said driving means to said rotating structure for normally rotating the structure synchronously with the motion of the driving means, and
Claim 5
Dependent Claim
25 words
a drive train coupling said driving means to said rotating structure for normally rotating the structure synchronously with the motion of the driving means, and
Claim 6
Dependent Claim
21 words
is drivingly coupled to said advancing means to actuate the advancing means in timed relation to the motion of the spool.
Claim 7
Dependent Claim
21 words
is drivingly coupled to said advancing means to actuate the advancing means in timed relation to the motion of the spool.
Claim 8
Dependent Claim
74 words
a gear train gearing said drive shaft to said sprocket wheels to drive said sprocket wheels in synchronism with said spool, a. said gear train comprising a pair of meshing gears one of which has a tooth-free portion on its periphery, whereby said pair of gears disengage for a predetermined interval in each cycle to provide frame-by-frame sequencing of said sprocket wheels with a time delay for the incorporation of a synchronized sound presentation.
Claim 9
Dependent Claim
74 words
a gear train gearing said drive shaft to said sprocket wheels to drive said sprocket wheels in synchronism with said spool, a. said gear train comprising a pair of meshing gears one of which has a tooth-free portion on its periphery, whereby said pair of gears disengage for a predetermined interval in each cycle to provide frame-by-frame sequencing of said sprocket wheels with a time delay for the incorporation of a synchronized sound presentation.
Claim 10
Dependent Claim
38 words
means interposed in said drive train for disabling the drive train output for a predetermined interval in each driving cycle to provide frame-by-frame advancement of said film elements with spaced time delays for interpolation of synchronized sound presentations.
Claim 11
Dependent Claim
38 words
means interposed in said drive train for disabling the drive train output for a predetermined interval in each driving cycle to provide frame-by-frame advancement of said film elements with spaced time delays for interpolation of synchronized sound presentations.
Claim 12
Dependent Claim
24 words
A filmstrip viewer as defined in claim 2 wherein said fitting is an axially mounted sprocket hub which is slotted to engage said spool.
Claim 13
Dependent Claim
18 words
A filmstrip viewer as defined in claim 3 wherein said sprocket hub is spring mounted on said shaft.
Claim 14
Dependent Claim
58 words
A filmstrip viewer as defined in claim 2 including a manual feed knob axially secured to said other end of said drive shaft and protruding from said enclosure to enable an operator to manually rotate said drive shaft and sprocket wheels geared thereto and thereby advance the filmstrip through said viewer prior to mounting to the tape recorder.
Claim 15
Dependent Claim
72 words
A filmstrip viewer as defined in claim 2 including a gear train gearing said drive shaft to said sprocket wheels, said gear train including a pair of meshing gears one of which has a tooth-free portion on its periphery, whereby said pair of gears disengage for a predetermined interval in each cycle to provide frame-by-frame sequencing of said sprocket wheels with a time delay for the incorporation of a synchronized sound presentation.
Claim 16
Dependent Claim
85 words
A filmstrip viewer as defined in claim 6 wherein said sprocket wheels are journalled to a common shaft and further including a manual fine adjustment knob axially secured to one end of said common shaft and protruding from said enclosure, whereby when said viewer is mounted to the tape recorder with said meshing gears disengaged, an operator can rotate said sprocket wheels separately from said drive shaft and gear train to finely adjust the positioning of a filmstrip frame with respect to said viewing means.
Claim 17
Dependent Claim
45 words
A filmstrip viewer as defined in claim 1 including battery powered illuminating means within said enclosure for illuminating the filmstrip as it passes through said viewer, and automatic switch means actuated when said viewer is mounted to the tape recorder to energize said illuminating means.
Claim 18
Dependent Claim
149 words
A filmstrip viewer as defined in claim 8 wherein said automatic switch means comprises a hollow hub extending from one surface of said enclosure and having an opening at the free end thereof, said hub also functioning as a support leg forming part of said support means, a reciprocable shaft mounted in said hub and extending at one end from said opening, means biasing said shaft through said opening, and a pair of open electrical contact members at least one of which is movable toward the other and lies in axial alignment with the other end of said shaft, whereby when said viewer is mounted to a tape recorder, the weight thereof acting against said one end of said shaft causes said shaft to move axially within said hub against said biasing means until said other end acts to move said contact members into electrical contact With each other.
Claim 19
Dependent Claim
102 words
A filmstrip viewer as defined in claim 8 wherein said illuminating means comprises an electric lamp mounted in a lamp socket, said lamp socket comprising a pedestal of electrical insulating material, a mounting plate of electrically conductive material secured to said pedestal and containing a lamp aperture the edges of which are cupped to act as a single screw thread, and a base contact plate of electrically conductive material mounted substantially parallel to and spaced from said mounting plate on said pedestal, said lamp being held in said lamp aperture with the lamp base in electrical contact with said base contact plate.
Claim 20
Dependent Claim
134 words
A filmstrip viewer adapted for removable mounting to a cassette tape recorder and being driven from a spool of a tape cassette loaded on the tape recorder to provide synchronized audio-visual presentations, comprising, in combination: A. an enclosure including means for guiding a filmstrip therethrough over a predetermined path, B. support means for removably supporting said enclosure on the tape recorder, C. viewing means in said enclosure permitting the viewing of the filmstrip as it passes through said viewer, D. illuminating means within said enclosure for illuminating the filmstrip as it passes through said viewer, E. advancing means for moving the filmstrip in a frame-by-frame sequence through said viewer comprising a pair of sprocket wheels journalled adjacent said path in position to engage the sprocket holes on the filmstrip, and F. driving means comprising,
Claim 21
Dependent Claim
134 words
A filmstrip viewer adapted for removable mounting to a cassette tape recorder and being driven from a spool of a tape cassette loaded on the tape recorder to provide synchronized audio-visual presentations, comprising, in combination: A. an enclosure including means for guiding a filmstrip therethrough over a predetermined path, B. support means for removably supporting said enclosure on the tape recorder, C. viewing means in said enclosure permitting the viewing of the filmstrip as it passes through said viewer, D. illuminating means within said enclosure for illuminating the filmstrip as it passes through said viewer, E. advancing means for moving the filmstrip in a frame-by-frame sequence through said viewer comprising a pair of sprocket wheels journalled adjacent said path in position to engage the sprocket holes on the filmstrip, and F. driving means comprising,
Claim 22
Dependent Claim
109 words
A film viewer adapted for removable mounting to a sound tape device and being driven synchronously with a spool-borne tape supply loaded on the tape device to provide synchronized audio-visual presentations, comprising, in combination: A. an enclosure including means for guiding a series of film elements sequentially therethrough over a predetermined path, B. support means for removably supporting said enclosure in an assigned location on the tape device, C. viewing means associated with said enclosure and permitting sequential viewing of the film elements as they pass through the enclosure, D. advancing means for moving the film elements in a frame-by-frame sequence through the enclosure, and E. driving means which
Claim 23
Dependent Claim
109 words
A film viewer adapted for removable mounting to a sound tape device and being driven synchronously with a spool-borne tape supply loaded on the tape device to provide synchronized audio-visual presentations, comprising, in combination: A. an enclosure including means for guiding a series of film elements sequentially therethrough over a predetermined path, B. support means for removably supporting said enclosure in an assigned location on the tape device, C. viewing means associated with said enclosure and permitting sequential viewing of the film elements as they pass through the enclosure, D. advancing means for moving the film elements in a frame-by-frame sequence through the enclosure, and E. driving means which
Claim 24
Dependent Claim
15 words
A film viewer as defined in claim 12, in which A. said advancing means includes
References Cited (Backward Citations)
US2551349A
Cited
US3288028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |