US3706488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable film reel
Assignee: Xerox Corp
•
Filing: 1970-05-27
•
Granted: 1972-12-19
•
Expires: 1990-05-27
Abstract
Abstract A film reel structure and support therefor characterized by the support being movable relative to a projection system with which it is associated. The reel structure is characterized by the capability of accommodating films having different widths through simple adjustment of the reel sections each having a rim or flange movable toward or away from the other rim or flange. The adjustment can be accomplished very easily and quickly without the use of tools.
Inventors
- 👤 Joseph P Masetta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:20
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/111; G03B21/113
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
150 words
In a film viewing apparatus, means for projecting an image onto a viewing screen, means including a pair of reels for supporting the film carrying the image to be projected, said support means being movable relative to said projecting means for positioning of the film in various positions relative to said projecting means, one of said reels being adapted to accommodate various film widths, said one of said reels comprising a first reel section having integral flange and hub portions; a second reel section having a recess for receiving said hub portion; and stop means for holding said reel sections in at least first and second positions for accommodating different film widths, said support means comprising a pair of sidewardly extending flanges slidingly received in a pair of opposed grooves of said viewing apparatus, said support means further comprising a pair of opposed brake members frictionally engaged in said grooves.
Claim 2
Dependent Claim
150 words
In a film viewing apparatus, means for projecting an image onto a viewing screen, means including a pair of reels for supporting the film carrying the image to be projected, said support means being movable relative to said projecting means for positioning of the film in various positions relative to said projecting means, one of said reels being adapted to accommodate various film widths, said one of said reels comprising a first reel section having integral flange and hub portions; a second reel section having a recess for receiving said hub portion; and stop means for holding said reel sections in at least first and second positions for accommodating different film widths, said support means comprising a pair of sidewardly extending flanges slidingly received in a pair of opposed grooves of said viewing apparatus, said support means further comprising a pair of opposed brake members frictionally engaged in said grooves.
Claim 3
Dependent Claim
27 words
Structure as specified in claim 1 wherein said stop means comprises, a pair of telescoping members, at least one of which has a radially inwardly projecting abutment.
Claim 4
Dependent Claim
19 words
Structure as specified in claim 2 wherein, said telescoping members are disposed internally of said hub and said recess.
Claim 5
Dependent Claim
32 words
Structure as specified in claim 3 wherein, said stop means further comprises: means extending radially outward from said hub portion engageable with means extending radially inward adjacent the opening of said recess.
Claim 6
Dependent Claim
26 words
Structure as specified in claim 4 wherein, the free end of said hub portion is flexible for permitting insertion of said hub portion into said recess.
Claim 7
Dependent Claim
16 words
Structure as specified in claim 5 including, means for preventing relative rotation of said reel sections.
Claim 8
Dependent Claim
37 words
Structure as specified in claim 6 wherein, said means for preventing relative rotation comprises a plurality of axial recesses in one of said reel sections for receiving means extending radially from the other of said reel sections.
Claim 9
Dependent Claim
32 words
Structure as specified in claim 5 wherein, said hub structure comprises a plurality of spaced apart segments, the spacing between which provides for attachment of the leading end of a film thereto.
Claim 10
Dependent Claim
67 words
Film reel structure, said structure comprising: a first reel section having integral flange and hub portions; a second reel section having a recess for receiving said hub portion; a pair of telescoping members at least one of which is provided with abutment means extending radially inward thereof, said hub portion being concentric with said telescoping members and said telescoping members being disposed internally of said hub portion.
Claim 11
Dependent Claim
67 words
Film reel structure, said structure comprising: a first reel section having integral flange and hub portions; a second reel section having a recess for receiving said hub portion; a pair of telescoping members at least one of which is provided with abutment means extending radially inward thereof, said hub portion being concentric with said telescoping members and said telescoping members being disposed internally of said hub portion.
Claim 12
Dependent Claim
28 words
Structure as specified in claim 9, further comprising means extending radially outward from said hub portion engageable with means extending radially inward adjacent the entrance to said recess.
Claim 13
Dependent Claim
29 words
Structure as specified in claim 10 wherein, said hub portion is flexible at least adjacent the free end thereof for permitting insertion of said hub portion into said recess.
Claim 14
Dependent Claim
17 words
Structure as specified in claim 11, further comprising means for preventing relative rotation of said reel sections.
Claim 15
Dependent Claim
36 words
Structure as specified in claim 12 wherein, said means for preventing relative rotation comprises a plurality of axial recesses in one of said reel sections for receiving means extending radially from the other said reel sections.
Claim 16
Dependent Claim
39 words
Structure as specified in claim 11 wherein, said hub structure comprises a plurality of spaced apart finger segments substantially perpendicular to said flange portion, the spacing between which provides means for attaching the leading edge of a film strip.
References Cited (Backward Citations)
US22517A
Cited
US1518402A
Cited
US2297222A
Cited
US2280750A
Cited
US2406434A
Cited
US2710727A
Cited
US3025016A
Cited
US3354776A
Cited
US3523657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |