Patent US4184647A successfully refreshed from Google Patents.
US4184647A
Expired / Lapsed
US
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Electrical cable unwinder
Assignee: Individual
•
Filing: 1977-02-07
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Granted: 1980-01-22
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Expires: 1997-02-07
Abstract
Abstract A portable electrical cable unwinder comprising a wheeled base with brakes, a rotatable disc upon a thrust bearing, friction supporting retarders, a core frame, and a lid.
Inventors
- 👤 Arthur G. Rourke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:14
CPC Classifications
B; B21; B21C; B21C47/00; B21C47/16; B21C47/18; B65; B65H; B65H49/00; B65H49/18; B65H49/20; B65H49/28; B65H49/30
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
116 words
A portable unwinder for electrical cable and the like comprising in combination: a base; a stud centrally located upon and extending upwards from the base; a thrust bearing about the stud and resting upon the base; a rotatable disc resting upon the thrust bearing and approximately centered relative to the stud; and means assembled to and projecting upwards from the base for supporting and retarding the rotation of the disc, the combination permitting rotation of the disc relative to the base and usable as an unwinder by placing coiled material upon the disc and pulling a loose end of the material, whereupon the disc and the coil upon it rotate in response to the pulling force.
Claim 2
Dependent Claim
116 words
A portable unwinder for electrical cable and the like comprising in combination: a base; a stud centrally located upon and extending upwards from the base; a thrust bearing about the stud and resting upon the base; a rotatable disc resting upon the thrust bearing and approximately centered relative to the stud; and means assembled to and projecting upwards from the base for supporting and retarding the rotation of the disc, the combination permitting rotation of the disc relative to the base and usable as an unwinder by placing coiled material upon the disc and pulling a loose end of the material, whereupon the disc and the coil upon it rotate in response to the pulling force.
Claim 3
Dependent Claim
16 words
An unwinder as in claim 1 wherein the rotatable disc comprises a reel having a core.
Claim 4
Dependent Claim
58 words
An unwinder as in claim 1 wherein the centrally located stud is threaded and projects upwards through an opening in the disc, the stud having a washer, a coil spring and a threaded nut thereabout, the spring bearing against the nut and urging the washer against the disc so that the disc is retained against the thrust bearing.
Claim 5
Dependent Claim
28 words
An unwinder as in claim 1 further comprising friction support means assembled to and projecting upwards from the base and supporting and retarding the rotation of the disc.
Claim 6
Dependent Claim
25 words
An unwinder as in claim 1 wherein the means comprises a threaded stud and a threaded nut capable of engaging the threads on the stud.
Claim 7
Dependent Claim
114 words
A portable unwinder for electrical cable and the like comprising in combination: a base; a stud centrally located upon and extending upwards from the base; a thrust bearing about the stud and resting upon the base; a rotatable disc resting upon the thrust bearing and approximately centered relative to the stud; and a core frame attached to the rotating disc and projecting upwards therefrom for centering a coil of material when placed upon the disc, the combination permitting rotation of the disc relative to the base and usable as an unwinder by pulling a loose end of the material, whereupon the disc and the coil upon it rotate in response to the pulling force.
Claim 8
Dependent Claim
114 words
A portable unwinder for electrical cable and the like comprising in combination: a base; a stud centrally located upon and extending upwards from the base; a thrust bearing about the stud and resting upon the base; a rotatable disc resting upon the thrust bearing and approximately centered relative to the stud; and a core frame attached to the rotating disc and projecting upwards therefrom for centering a coil of material when placed upon the disc, the combination permitting rotation of the disc relative to the base and usable as an unwinder by pulling a loose end of the material, whereupon the disc and the coil upon it rotate in response to the pulling force.
Claim 9
Dependent Claim
24 words
An unwinder as in claim 6 further comprising a lid which may be placed on top of any coil of material on the disc.
Claim 10
Dependent Claim
41 words
An unwinder as in claim 1 wherein the base has at least three rotatable anti-friction members upon which the base rests and may move, and at least one brake descending from the base and adjustable so as to restrict base motion.
Claim 11
Dependent Claim
71 words
An unwinder as in claim 8 wherein the brake comprises a threaded bolt threadably engaged with the base and descending therefrom, a locknut upon the bolt to lock it against rotation relative to the base, bolt wrench engaging means, and a large foot at the lower end of the bolt, the foot for engaging the floor upon which the base has been placed in order to keep the base from moving.
Claim 12
Dependent Claim
14 words
An unwinder as in claim 9 wherein the rotatable anti-friction members are swivel casters.
Claim 13
Dependent Claim
58 words
An unwinder as in claim 6 wherein the centrally located stud is threaded and projects upwards through an opening in the disc, the stud having a washer, a coil spring and a threaded nut thereabout, the spring bearing against the nut and urging the washer against the disc so that the disc is retained against the thrust bearing.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |