US3883087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film take-up reel
Assignee: PRAAG CLIFFORD VAN
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Filing: 1973-02-23
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Granted: 1975-05-13
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Expires: 1993-02-23
Abstract
Abstract A take-up reel for motion picture film and the like including a hub structure formed of a complementary pair of sheet-metal components, a ball bearing assembly fastened to each hub component, and reel side discs being mounted on each ball bearing assembly so as to be rotatable relative to the hub structure in free-wheeling relationship therewith.
Inventors
- 👤 Praag Clifford Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:23
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/04; B65H75/08; B65H75/14; B65H2701/00; B65H2701/50; B65H2701/51; B65H2701/513; B65H2701/5134; Y; Y10; Y10S; Y10S242/00; Y10S242/914
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
286 words
A motion picture film take-up reel comprising: a. a rotatably drivable hub member including a central hub portion formed of a pair of complementary halves and being adapted to receive a take-up reel drive spindle of a motion picture projector and form a driving connection therewith; radially extending peripheral flange means extending from said hub portion; cylindrical film-receiving surface means formed at the radially outer end of said flange means upon which said film is adapted to be wound; said pair of complementary halves centrally divided in a radially extending plane, each said half including a half-thickness portion of said peripheral flange means in contiguous surface-to-surface relationship, and fasstener means interconnecting said flange means for fastening together said complementary halves; b. roller bearing means having first and second races, each including parallel radially extending side wall portions rotatable relative to each about a common axis, one each of said roller bearing means being positioned on each side of said flange means and with the central hub portion extending through a center aperture formed in each of said roller bearing means, further fastener means for fastening the side wall portions of each of said roller bearing means adjacent said flange means to said flange means; and c. a pair of disc-shaped centrally-apertured planar flanges of light-weight material having the radially inner peripheral portion thereof positioned adjacent the axially outer side wall portions of each of said roller bearing means, said planar flanges being rigidly fastened to said side wall portions and being spaced apart a distance slightly greater than the width of the film to be wound on the cylindrical film-receiving surface means, said planar flanges being freely rotatable relative to said hub member and each other.
Claim 2
Dependent Claim
286 words
A motion picture film take-up reel comprising: a. a rotatably drivable hub member including a central hub portion formed of a pair of complementary halves and being adapted to receive a take-up reel drive spindle of a motion picture projector and form a driving connection therewith; radially extending peripheral flange means extending from said hub portion; cylindrical film-receiving surface means formed at the radially outer end of said flange means upon which said film is adapted to be wound; said pair of complementary halves centrally divided in a radially extending plane, each said half including a half-thickness portion of said peripheral flange means in contiguous surface-to-surface relationship, and fasstener means interconnecting said flange means for fastening together said complementary halves; b. roller bearing means having first and second races, each including parallel radially extending side wall portions rotatable relative to each about a common axis, one each of said roller bearing means being positioned on each side of said flange means and with the central hub portion extending through a center aperture formed in each of said roller bearing means, further fastener means for fastening the side wall portions of each of said roller bearing means adjacent said flange means to said flange means; and c. a pair of disc-shaped centrally-apertured planar flanges of light-weight material having the radially inner peripheral portion thereof positioned adjacent the axially outer side wall portions of each of said roller bearing means, said planar flanges being rigidly fastened to said side wall portions and being spaced apart a distance slightly greater than the width of the film to be wound on the cylindrical film-receiving surface means, said planar flanges being freely rotatable relative to said hub member and each other.
Claim 3
Dependent Claim
59 words
A film take-up reel as claimed in claim 1, comprising a plurality of radially aligned, peripherally spaced apertures being formed in said peripheral flange means and in each of the bearing means side wall portions adjacent thereto; said further fastener means extending through said aligned apertures so as to rigidly fasten said side wall portions to said flange means.
Claim 4
Dependent Claim
58 words
A film take-up reel as claimed in claim 1, comprising a plurality of radially aligned, peripherally spaced apertures being formed in said planar flanges and in each of the bearing means side wall portions adjacent thereto; said further fastener means extending through said aligned apertures so as to rigidly fasten said side wall portions to said planar flanges.
Claim 5
Dependent Claim
30 words
A film take-up reel as claimed in claim 1, at least the side wall portions of said roller bearing means fastened to said planar flanges being substantially rectangular in configuration.
Claim 6
Dependent Claim
24 words
A film take-up reel as claimed in claim 1, each of said hub member halves being formed of a shaped, formed sheet metal member.
Claim 7
Dependent Claim
120 words
A film take-up reel as claimed in claim 1, comprising annular spacer means adapted to be positioned intermediate said peripheral flange means portions and having an outer peripheral cylindrical surface coextensive with cylindrical film-receiving surface means; and a plurality of apertures being formed in said spacer means in alignment with the apertures in said side wall portions and in said flange means, said fastener means for connecting said side wall portions and said flange means extending through the apertures in said spacer means for rigidly fastening the latter to said side wall portions and to said flange means so as to form a unitary hub member, said spacer means structure adapted to receive a wider film on said take-up reel.
Claim 8
Dependent Claim
25 words
A film take-up reel as claimed in claim 1, said hub member hub portion, peripheral flange means and cylindrical film-receiving surface means being integrally formed.
Claim 9
Dependent Claim
18 words
A film take-up reel as claimed in claim 7, said hub member comprising a formed sheet metal member.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |