US3630466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch mechanism for a retractile cord reel
Assignee: AT&T Inc
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Filing: 1969-11-06
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Granted: 1971-12-28
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Expires: 1989-11-06
Abstract
Abstract In a spring-loaded retractile cord arrangement for an electrical appliance or telephone handset, a magnetically actuated catch mechanism is employed to arrest the cord at any preselected position without requiring the user to work against spring tension while holding the cord in that preselected position. Inadvertent locking during the rewind cycle is prevented by inhibiting the latch mechanism with a cam arrangement.
Inventors
- 👤 Wilfred J Kindermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:37
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/34; B65H75/38; B65H75/44; B65H75/4418; B65H75/4428; B65H75/4434; H; H02; H02G; H02G11/00; H02G11/02; H04; H04M; H04M1/00; H04M1/02; H04M1/15; B65H2555/00; B65H2555/10; B65H2555/13
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
131 words
A retractile cord reel, comprising, in combination, a springloaded reel member mounted for rotational movement, a cover member, a latch member mounted for pivotal movement on said cover member, means for normally biasing said latch member out of arresting engagement with said reel member, means responsive to the release of said reel from an engaged condition with said latch for inhibiting the operation of said latch thereby to enable said reel to rewind in a free-wheeling mode, wherein said inhibiting means comprises a cam coaxially mounted for rotational movement with said reel member, said cam being spring loaded against said reel thereby to provide friction drive of said cam by said reel member, said friction drive being interrupted by a lobe of said cam coming into inhibiting relation with said latch.
Claim 2
Dependent Claim
131 words
A retractile cord reel, comprising, in combination, a springloaded reel member mounted for rotational movement, a cover member, a latch member mounted for pivotal movement on said cover member, means for normally biasing said latch member out of arresting engagement with said reel member, means responsive to the release of said reel from an engaged condition with said latch for inhibiting the operation of said latch thereby to enable said reel to rewind in a free-wheeling mode, wherein said inhibiting means comprises a cam coaxially mounted for rotational movement with said reel member, said cam being spring loaded against said reel thereby to provide friction drive of said cam by said reel member, said friction drive being interrupted by a lobe of said cam coming into inhibiting relation with said latch.
Claim 3
Dependent Claim
138 words
A retractile cord reel, comprising, in combination, a spring-loaded reel member mounted for rotational movement, a cover member, a latch member mounted for pivotal movement on said cover member, means for normally biasing said latch member out of arresting engagement with said reel member, means responsive to the release of said reel from an engaged condition with said latch for inhibiting the operation of said latch thereby to enable said reel to rewind in a free-wheeling mode, wherein said inhibiting means comprises a cam coaxially mounted for rotational movement with said reel member, said cam being spring loaded against said reel thereby to provide friction drive of said cam by said reel member, said friction drive being interrupted by a lobe of said cam coming into inhibiting relation with said latch, wherein said biasing means comprises magnetic means.
Claim 4
Dependent Claim
138 words
A retractile cord reel, comprising, in combination, a spring-loaded reel member mounted for rotational movement, a cover member, a latch member mounted for pivotal movement on said cover member, means for normally biasing said latch member out of arresting engagement with said reel member, means responsive to the release of said reel from an engaged condition with said latch for inhibiting the operation of said latch thereby to enable said reel to rewind in a free-wheeling mode, wherein said inhibiting means comprises a cam coaxially mounted for rotational movement with said reel member, said cam being spring loaded against said reel thereby to provide friction drive of said cam by said reel member, said friction drive being interrupted by a lobe of said cam coming into inhibiting relation with said latch, wherein said biasing means comprises magnetic means.
Claim 5
Dependent Claim
104 words
A retractile cord reel comprising, in combination: a spring-loaded reel member mounted for rotational movement; a fixed cover member; a latch, engageable with said reel for arresting movement of said reel, pivotally mounted on said cover member; magnetic means mounted on said reel for exerting an attractive force on said latch at preselected points during the rotational movement of said reel; a cam mounted for rotational movement normally in friction drive relation with said reel; said cam including a lobe portion for engaging said latch thereby to prevent engagement with said reel during a free-wheeling reel-in or reel-out mode irrespective of said magnetic means.
Claim 6
Dependent Claim
104 words
A retractile cord reel comprising, in combination: a spring-loaded reel member mounted for rotational movement; a fixed cover member; a latch, engageable with said reel for arresting movement of said reel, pivotally mounted on said cover member; magnetic means mounted on said reel for exerting an attractive force on said latch at preselected points during the rotational movement of said reel; a cam mounted for rotational movement normally in friction drive relation with said reel; said cam including a lobe portion for engaging said latch thereby to prevent engagement with said reel during a free-wheeling reel-in or reel-out mode irrespective of said magnetic means.
Claim 7
Dependent Claim
46 words
Apparatus in accordance with claim 3 wherein said cam includes spring tab members bearing against the inside of said cover member thereby to force said cam against said reel in friction drive relation, said friction drive relation being overcome whenever said lobe rotates against said latch.
Claim 8
Dependent Claim
24 words
Apparatus in accordance with claim 3 wherein said latch includes a magnet poled for mutual attractive relation with said magnetic means on said reel.
Claim 9
Dependent Claim
34 words
Apparatus in accordance with claim 5 wherein said reel member includes at least one notched portion on the edge thereof, coinciding with the location of said magnetic means to facilitate engagement with said latch.
References Cited (Backward Citations)
US3462095A
Cited
US3528624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |