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US3743200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magazine for bare film sheets for use in x-ray film handling apparatus
Assignee: Compagnie Generale de Radiologie SA
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Filing: 1971-07-29
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Granted: 1973-07-03
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Expires: 1991-07-29
Abstract
Abstract Magazine for storing bare film sheets, for use in X-ray film handling apparatus, comprising a light-tight housing and a slot for introducing or ejecting said sheets, further including within said housing: a motor-driven central storage roller; a motordriven feed roller, and a plastic flexible band wound respectively around said two rollers. The film sheet introduced in the slot is wound on the central roller and stored between two faces of the band fed from the feed roller. For ejection the feed roller is driven to unwind the band from the central roller and carry the sheet towards the slot.
Inventors
- 👤 M Hommerin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:13
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/006; G; G03; G03B; G03B17/00; G03B17/26; G03B27/00; G03B27/32; G03B27/52; G03B27/58; G03B27/585; G03B42/00; G03B42/02; G03B42/04; G03B42/045; G21; G21K; G21K4/00; B65H2220/00; B65H2220/09; B65H2301/00; B65H2301/40; B65H2301/41; B65H2301/419; B65H2301/4191; B65H2301/41912; B65H2403/00; B65H2403/70; B65H2403/72
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
292 words
In an X-ray film handling apparatus, a magazine for storing bare film precut into sheets used for storing exposed negatives and/or for supplying unexposed film, said magazine comprising a light-tight housing provided with an elongated narrow slot for the introduction of said film sheets therein and their ejection therefrom, one by one, and including within said housing: flexible means made up from a band of plastic material; a motordriven supply spool for containing a supply of said flexible means, whose one extremity is fixed thereto; a motor-driven storage spool for storing said film sheets thereupon between two faces of said flexible means, whose other extremity is fixed to said storage spool substantially located at the center of said housing, said supply and storage spools having respective shafts parallel to said slot; a pair of contiguous cylindrical rollers parallel to and located close to said slot for light-tightly shielding said magazine, said flexible means, between said supply and said storage spool, passing around one roller of said pair and between both of them, whereby to guide said film sheets to be stored from said slot towards said storage spool and/or those to be ejected from said storage spool towards said slot; electrical motor means for respectively driving said supply and storage spools; electrical connector means mounted on said housing for delivering electrical supply voltages to and signals from said magazine, said connector means having a plurality of contacts; and rotary signalling means having a shaft coupled to that of one of said spools and fed by one of said supply voltages for delivering a first signal on one of said contacts when sAid storage spool is empty and a second signal on another one of said contacts when said storage spool is full.
Claim 2
Dependent Claim
292 words
In an X-ray film handling apparatus, a magazine for storing bare film precut into sheets used for storing exposed negatives and/or for supplying unexposed film, said magazine comprising a light-tight housing provided with an elongated narrow slot for the introduction of said film sheets therein and their ejection therefrom, one by one, and including within said housing: flexible means made up from a band of plastic material; a motordriven supply spool for containing a supply of said flexible means, whose one extremity is fixed thereto; a motor-driven storage spool for storing said film sheets thereupon between two faces of said flexible means, whose other extremity is fixed to said storage spool substantially located at the center of said housing, said supply and storage spools having respective shafts parallel to said slot; a pair of contiguous cylindrical rollers parallel to and located close to said slot for light-tightly shielding said magazine, said flexible means, between said supply and said storage spool, passing around one roller of said pair and between both of them, whereby to guide said film sheets to be stored from said slot towards said storage spool and/or those to be ejected from said storage spool towards said slot; electrical motor means for respectively driving said supply and storage spools; electrical connector means mounted on said housing for delivering electrical supply voltages to and signals from said magazine, said connector means having a plurality of contacts; and rotary signalling means having a shaft coupled to that of one of said spools and fed by one of said supply voltages for delivering a first signal on one of said contacts when sAid storage spool is empty and a second signal on another one of said contacts when said storage spool is full.
Claim 3
Dependent Claim
49 words
Magazine as claimed in claim 1, wherein said rotary signalling means further comprises means for delivering to a further contact of said connecting means a third signal function of the angular position of its shaft, whereby to indicate the number of said film sheets retained on said storage spool.
Claim 4
Dependent Claim
130 words
Magazine as claimed in claim 1, adapted to operate alternately as a supply of unexposed film and as means for storing exposed negatives, further including within said housing electrically operated bistable switching means for indicating the quality of the film contained therein, said switching means being made up by a polarized relay with magnetic latching so as to remain in any one of its stable states without being fed by a control voltage; said relay being set into its first state by means of a control voltage applied to a fourth contact of said connecting means while being charged with unexposed film for delivering a voltage signalling the presence thereof to a fifth contact and reset into its second state by means of said first signal when it becomes empty.
Claim 5
Dependent Claim
58 words
Magazine as claimed in claim 1, wherein said motor means for driving said supply and said storage spools include a single motor having a shaft alternately coupled to those of said spools by means of two electrically controlled clutches, and wherein the shafts of said spools are respectively equipped with electrically operated brakes for stretching said flexible means.
Claim 6
Dependent Claim
63 words
Magazine as claimed in claim 1, wherein said motor means for driving said supply and said storage spools includes a first motor coupled to the shaft of said supply spool by means of a first reduction gear and a second motor coupled to the shaft of said storage spools by means of a second reduction gear, both of said motors having rotor windings.
Claim 7
Dependent Claim
51 words
Magazine as claimed in claim 5, wherein said reduction gears are reversible, the motor driving the spool whereon said flexible means is wound being fed by a voltage, while the motor coupled to the spool wherefrom said flexible means is unwound acts as a brake in order to stretch said latter.
Claim 8
Dependent Claim
61 words
Magazine as claimed in claim 6, wherein said motor acting as a brake has its rotor loaded by a resistor, said resistor delivering a voltage drop proportional to the speed of rotation of said rotor, said voltage drop controlling the motor driving the spool whereon said flexible means is wound, whereby said motor acting as brake also acts as a tachogenerator.
Claim 9
Dependent Claim
34 words
Magazine as claimed in claim 5, wherein said reduction gears are irreversible, and wherein said shafts of said two motors are respectively coupled to said reduction gear by means of electrically controlled friction couplers.
Claim 10
Dependent Claim
17 words
Magazine as claimed in claim 1, wherein said band of plastic material is made of metallized polyethyleneterephtalate.
Claim 11
Dependent Claim
57 words
Magazine as claimed in claim 1, further including within said housing: second flexible means and a second motor driven supply spool for carrying a supply of said second flexible means, said second flexible means being wound on and unwound from said storage spool simultaneously with the first named means for holding said film sheets between the two.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |