US3929210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable cord reel
Assignee: Vacuum Cleaner Corp of America
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Filing: 1974-05-28
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Granted: 1975-12-30
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Expires: 1994-05-28
Abstract
Abstract A retractable cord reel, especially for electrical cord. The cord is carried by a pair of lightweight, electrically nonconductive hub-and-flange members secured together in sheave-like configuration. A tandem spring motor provides even tensioning of the cord, both when fully unwound and when fully retracted or wound up. Electrical continuity is provided as desired for grounding of the reel frame via a mounting arbor, which also may be non-conductive in large part so long as a sufficient part of it remains conductive.
Inventors
- 👤 Morris Cutler
- 👤 Bernard J Tamarin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:09
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/34; B65H75/38; B65H75/44; B65H75/48; B65H75/486; H; H02; H02G; H02G11/00; H02G11/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
100 words
In a retractable electrical cord reel having an arbor comprising electrically conductive material, electrical conductor rings concentric therewith, and a nonconductive flange rotatable relative to the arbor and carrying the rings rotatively therearound, the improvement comprising a three-conductor electrical cord adapted to be wound onto and unwound from the reel, two of the conductors terminating in fixed contact with the respective conductor rings, and electrically conductive collar secured in fixed relation to the flange and encircling an electrically conductive portion of the arbor and in contact therewith, the third conductor of the cord terminating in fixed contact with the collar.
Claim 2
Dependent Claim
100 words
In a retractable electrical cord reel having an arbor comprising electrically conductive material, electrical conductor rings concentric therewith, and a nonconductive flange rotatable relative to the arbor and carrying the rings rotatively therearound, the improvement comprising a three-conductor electrical cord adapted to be wound onto and unwound from the reel, two of the conductors terminating in fixed contact with the respective conductor rings, and electrically conductive collar secured in fixed relation to the flange and encircling an electrically conductive portion of the arbor and in contact therewith, the third conductor of the cord terminating in fixed contact with the collar.
Claim 3
Dependent Claim
25 words
Cord reel according to claim 1, wherein the flange has openings therein accommodating the terminations of the respective cord conductors secured to the concentric rings.
Claim 4
Dependent Claim
17 words
Cord reel according to claim 2, wherein the third conductor terminates secured to the electrically conductive collar.
Claim 5
Dependent Claim
23 words
Cord reel according to claim 1, including also an electrically conductor frame member in contact with the electrically conductive part of the arbor.
Claim 6
Dependent Claim
13 words
Cord reel according to claim 4, wherein the frame member is grounded externally.
Claim 7
Dependent Claim
17 words
Cord reel according to claim 5, wherein the third conductor of the cord is a grounding conductor.
Claim 8
Dependent Claim
23 words
Cord reel according to claim 1, wherein another part of the arbor comprises electrically non-conductive material predominantly and lacks such electrical continuity path.
Claim 9
Dependent Claim
68 words
In a retractable electrical cord reel having an electrically conductive arbor, electrical conductor rings concentric therewith, and a non-conductive flange rotatable relative to the arbor and carrying the rings rotatively therearound, the improvement comprising an electrically conductive collar secured in fixed relation flange and encircling the arbor and in contact therewith, and an electrical interconnection between the collar and an electrical conductor in the cord of the reel.
Claim 10
Dependent Claim
68 words
In a retractable electrical cord reel having an electrically conductive arbor, electrical conductor rings concentric therewith, and a non-conductive flange rotatable relative to the arbor and carrying the rings rotatively therearound, the improvement comprising an electrically conductive collar secured in fixed relation flange and encircling the arbor and in contact therewith, and an electrical interconnection between the collar and an electrical conductor in the cord of the reel.
Claim 11
Dependent Claim
15 words
Cord reel according to claim 8, wherein the flange carries means for supporting the collar.
Claim 12
Dependent Claim
34 words
Cord reel according to claim 9, wherein the supporting means comprises a boss on the flange, and the collar has a tab with an opening therein adapting it to be press-fit onto the boss.
Claim 13
Dependent Claim
31 words
Cord reel according to claim 9, including an electrically conductive frame member secured non-rotatively to the arbor and electrically interconnected to the one cord conductor through the arbor and the collar.
Claim 14
Dependent Claim
27 words
Cord reel according to claim 11, wherein the arbor comprises electrically conductive and non-conductive portions, the conductive portion being contiguous with the collar and the frame 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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |