US3558072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adapter for 8 mm movie projector
Assignee: Nikon Corp
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Filing: 1968-12-05
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Granted: 1971-01-26
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Expires: 1988-12-05
Abstract
Abstract The present invention provides a reel adapter for 8 mm movie projector, and the improvement resides in the provision of a groove and flange portion formed on an adapter ring and a projection formed on the reel stopper plate so that the adapter ring can be stopped when the reel stopper plate is raised or lowered optionally, and the adapter ring can also be stopped when the reel for the super 8 mm film is inserted or removed.
Inventors
- 👤 Shigeo Wakahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:24
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/10; G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/321
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
207 words
A reel adapter for an 8 mm movie projector comprising a reel stopper plate provided on a reel receiving shaft for mounting a reel of regular 8 mm film having a small hole diameter, said reel stopper plate being formed in such a manner that the reel stopper plate can be raised in a direction perpendicular to the axial direction of the reel receiving shaft to stop the reel when the reel of the regular 8 mm film is mounted on the reel receiving shaft; an adapter ring for mounting a reel of super 8 mm film whose hole is larger in diameter than that of a regular 8 mm film reel in such a manner that the adapter ring can be mounted on said reel receiving shaft whereby said reel for super 8 mm film can be stopped by said reel stopper plate, the improvement comprising a groove and a flange portion formed on the adapter ring and a projection formed on the reel stopper plate so that the adapter ring can be stopped when the reel stopper plate is raised or lowered optionally, and the adapter ring is retained upon the reel receiving shaft when a reel of supper 8 mm type film is removed.
Claim 2
Dependent Claim
207 words
A reel adapter for an 8 mm movie projector comprising a reel stopper plate provided on a reel receiving shaft for mounting a reel of regular 8 mm film having a small hole diameter, said reel stopper plate being formed in such a manner that the reel stopper plate can be raised in a direction perpendicular to the axial direction of the reel receiving shaft to stop the reel when the reel of the regular 8 mm film is mounted on the reel receiving shaft; an adapter ring for mounting a reel of super 8 mm film whose hole is larger in diameter than that of a regular 8 mm film reel in such a manner that the adapter ring can be mounted on said reel receiving shaft whereby said reel for super 8 mm film can be stopped by said reel stopper plate, the improvement comprising a groove and a flange portion formed on the adapter ring and a projection formed on the reel stopper plate so that the adapter ring can be stopped when the reel stopper plate is raised or lowered optionally, and the adapter ring is retained upon the reel receiving shaft when a reel of supper 8 mm type film is removed.
Claim 3
Dependent Claim
122 words
A reel adapter as set forth in claim 1, wherein the groove extends the length of the adapter ring and is of a width to receive the reel stopper plate when the stopper plate is in raised position; wherein the flange portion extends externally of the adapter ring and is located on the side of a reel having super 8 mm film thereon opposite the side of the reel confined by the raised stopper plate; and wherein the adapter ring is provided with an internal projection at the end thereof opposite the end where the external flange is located, said internal projection being cooperabLe with the projection formed on the reel stopper plate in the lowered position of the reel stopper plate.
References Cited (Backward Citations)
US3326489A
Cited
US3375995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |