US4355798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film feed magazine for equipping a radiographic film changer and a film-changer equipped with said magazine
Assignee: CGR GENERALE DI RADIOLOGIA A CORP OF Cia
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Filing: 1980-09-04
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Granted: 1982-10-26
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Expires: 2000-09-04
Abstract
Abstract A radiographic film magazine for receiving stacked films without any intercalary strips and feeding them one by one into a film-changer without any problems of adhesion by means of a spout-shaped receptacle in which the films are retained with a high degree of curvature, thus facilitating extraction of the films. The magazine is intended to equip high-speed film-changers as well as normal selectors provided with a film-gripping mechanism.
Inventors
- 👤 Francisco Villa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:52
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G03B42/04; G03B42/045
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
199 words
A film feed magazine for a radiographic film changer having means for individually gripping films comprising: a light-tight outer casing having an elongated slot formed therein; a receptacle for holding said films in packet form disposed within said outer casing, said receptacle having an inner wall and an outer wall, each defining an arcuate spout-shaped profile, said receptacle having an open end portion for receiving said films in packet form; a movable shutter operatively associated with said casing for opening and closing said elongated slot such that said opening of said elongated slot provides access to said open end portion of said receptacle; means operatively associated with said receptacle and said shutter for displacing said receptacle within said outer casing from a first position wherein said receptacle is remotely disposed within said casing with respect to said elongated slot and said movable shutter closes said elongated slot to a second position wherein said receptacle is proximately disposed within said casing with respect to said elongated slot and said movable shutter opens said elongated slot such that an end portion of said films in packet form passes through said elongated slot for access to said means for gripping said films.
Claim 2
Dependent Claim
199 words
A film feed magazine for a radiographic film changer having means for individually gripping films comprising: a light-tight outer casing having an elongated slot formed therein; a receptacle for holding said films in packet form disposed within said outer casing, said receptacle having an inner wall and an outer wall, each defining an arcuate spout-shaped profile, said receptacle having an open end portion for receiving said films in packet form; a movable shutter operatively associated with said casing for opening and closing said elongated slot such that said opening of said elongated slot provides access to said open end portion of said receptacle; means operatively associated with said receptacle and said shutter for displacing said receptacle within said outer casing from a first position wherein said receptacle is remotely disposed within said casing with respect to said elongated slot and said movable shutter closes said elongated slot to a second position wherein said receptacle is proximately disposed within said casing with respect to said elongated slot and said movable shutter opens said elongated slot such that an end portion of said films in packet form passes through said elongated slot for access to said means for gripping said films.
Claim 3
Dependent Claim
77 words
A film feed magazine according to claim 1 further comprising control means operatively associated with said means for displacing said receptacle and with said movable shutter, said control means ensuring concurrent actuation of said shutter and displacement of said receptacle such that movement of said receptacle from said first position to said second position effects the passage of an end portion of said outer wall adjacent said open end portion of said receptacle through said elongated slot.
Claim 4
Dependent Claim
94 words
A film feed magazine according to claim 1 or claim 2, wherein said outer wall further comprises an articulated end portion having a flange for retaining said films in packet form, means for allowing rotation of said articulated portion about an axis parallel to said elongated slot, said means for allowing rotation being connected to said end portion of said outer wall, elastic means for biasing said packet of films towards said open end portion of said receptacle, and elastic means for biasing said packet of films toward said means for gripping said films.
Claim 5
Dependent Claim
56 words
A film feed magazine according to claim 1 wherein said means for individually gripping films further comprises rotating means operatively associated with said radiographic film changer for individually detaching said films, and wherein said films further comprise a stack of precut films such that said rotating means individually separates each of said films from said stack.
References Cited (Backward Citations)
US3074713A
Cited
CH472683A
Cited
US3616736A
Cited
US3720408A
Cited
US4014536A
Cited
US4201919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |