Patent US4093362A successfully refreshed from Google Patents.
US4093362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pinch roller moving devices for simultaneous image and sound recording cinecameras
Assignee: Elmo Co Ltd
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Filing: 1977-03-14
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Granted: 1978-06-06
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Expires: 1997-03-14
Abstract
Abstract Disclosed is an improved pinch roller moving device for a simultaneous image and sound recording cinecamera. The device includes a first lever on which the pinch roller is supported rotatably and transversely movably and a second lever rotatable to rotate the first lever to press the pinch roller against a capstan. A cam is provided to rotate the second lever and a third lever is provided to hold the first lever against rotation. The third lever is rotatable upon rotation of a second cam to release the first lever for rotation. A fourth lever is provided for maintaining the second lever in its rotated position. The device further includes means for transmitting rotation of a capstan driving motor to the cams. This motor is operable upon depression of a release button on the cinecamera.
Inventors
- 👤 Masakathu Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:53
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/28; G11B15/29; G03; G03B; G03B31/00; G03B31/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
136 words
A pinch roller moving device for a simultaneous image and sound recording cinecamera having a capstan, a pinch roller movable into contact with said capstan to advance continuously a film having a sound recording track along one longitudinal edge thereof, means for driving said film intermittently, an electric motor for driving said capstan and an electric motor for driving said intermittent film driving means, said device comprising: a rotatable lever on which said pinch roller is rotatably and transversely movably supported; rotary means rotatable upon rotation of said capstan driving motor; and means for transmitting said rotation of said capstan driving motor to said rotary means to rotate said lever to move said pinch roller transversely to press said film against said capstan; said capstan driving motor being actuatable upon depression of a cinecamera release button.
Claim 2
Dependent Claim
136 words
A pinch roller moving device for a simultaneous image and sound recording cinecamera having a capstan, a pinch roller movable into contact with said capstan to advance continuously a film having a sound recording track along one longitudinal edge thereof, means for driving said film intermittently, an electric motor for driving said capstan and an electric motor for driving said intermittent film driving means, said device comprising: a rotatable lever on which said pinch roller is rotatably and transversely movably supported; rotary means rotatable upon rotation of said capstan driving motor; and means for transmitting said rotation of said capstan driving motor to said rotary means to rotate said lever to move said pinch roller transversely to press said film against said capstan; said capstan driving motor being actuatable upon depression of a cinecamera release button.
Claim 3
Dependent Claim
31 words
The device as defined in claim 1, further including a switch provided between a power source and said intermittent film driving motor for closure by said lever upon said rotation thereof.
Claim 4
Dependent Claim
14 words
The device as defined in claim 1, wherein said rotary means comprises a cam.
Claim 5
Dependent Claim
69 words
The device as defined in claim 1, further including: a second rotatable lever having an axis of rotation on the axis of rotation of said first mentioned lever; and a spring connected between said first and second levers; said second lever being rotatable upon rotation of said rotary means to assist said rotation of said first lever to effect said transverse movement of said pinch roller toward said capstan.
Claim 6
Dependent Claim
29 words
The device as defined in claim 4, further including means for discontinuing said transmission of said rotation of said capstan driving motor upon said rotation of said second lever.
Claim 7
Dependent Claim
61 words
The device as defined in claim 4, further including: a second rotary means mounted coaxially with said first mentioned rotary means; and a third rotatable lever positively engageable with said first mentioned lever to maintain it against said rotation thereof, said third lever being rotatable upon rotation of said second rotary means to release said positive engagement with said first lever.
Claim 8
Dependent Claim
85 words
The device as defined in claim 6, wherein said first mentioned rotary means comprises a first basically circular cam of varying radius and said second rotary means comprises a second generally circular cam of varying radius rotatable with said first cam and having an angular point at which said second cam has its maximum radius and which is located ahead, in the direction of rotation of said cams, of the angular point of said first cam which defines the maximum radius of said first cam.
Claim 9
Dependent Claim
44 words
The device as defined in claim 7, wherein said angular point of said first cam is normally spaced at a predetermined angular distance from that portion of said first cam at which said first cam contacts prior to said rotation of said second lever.
Claim 10
Dependent Claim
28 words
The device as defined in claim 6, further including a fourth lever resiliently rotatable into latching engagement with said second lever upon said rotation of said third lever.
Claim 11
Dependent Claim
35 words
The device as defined in claim 9, further including means provided in the vicinity of said fourth lever for disconnecting said latching engagement, said disconnecting means being operable upon discontinuation of said release button depression.
Claim 12
Dependent Claim
14 words
The device as defined in claim 10, wherein said disconnecting means comprises an electromagnet.
Claim 13
Dependent Claim
78 words
The device as defined in claim 1, wherein said transmitting means comprises: a toothed wheel coaxially supported with said capstan; a lever; a shaft on which said last mentioned lever is rotatably supported; and a chain of toothed wheels rotatably supported on said last mentioned lever, including one rotatably supported on said last mentioned shaft, said chain of toothed wheels being engageable with said first mentioned toothed wheel, said rotary means being supported on said last mentioned shaft.
Claim 14
Dependent Claim
47 words
The device as defined in claim 12, further including means provided on said last mentioned lever and engageable by said first mentioned lever for releasing said chain of toothed wheels from said engagement with said first mentioned toothed wheel upon said rotation of said first mentioned lever.
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) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |