US3678423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Windings for operating efficiently contacts of reeds with constricted areas
Assignee: Automatic Electric Laboratories Inc
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Filing: 1970-08-31
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Granted: 1972-07-18
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Expires: 1990-08-31
Abstract
Abstract The length of an operating winding is related to the positions of constricted areas that result incidentally from formations of a blade from round wire at one end of each reed. Since sensitivity of a winding for operating the reeds is found to decrease rapidly as the winding becomes longer than the distance between the constricted areas, a sectional winding for operating the reeds is centered over the contacts between the constricted areas, and hold windings, effective after the reluctance of the path has been decreased by closure of the contacts, are positioned in an adjacent winding space.
Inventors
- 👤 Richard M Rovnyak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:25
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/28; H01H51/281
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A reed relay assembly comprising: an encapsulated reed switch having at least one pair of cooperating magnetic reeds each having a constricted crosssectional area at a point intermediate its ends and the two reeds overlapping each other at one of their ends to form a pair of contacts; an operate winding and a hold winding, both concentrically wound around said switch, said operate winding being adapted to close said contacts in response to the flow of an electrical current therethrough and said hold winding being adapted to maintain said contacts closed in response to the flow of an electrical current therethrough in the absence of said electrical current in said operate winding; said operate winding being centered over the overlapping portions of said reeds and proportioned such that its length is less than the distance between said constricted cross-sectional areas; said hold winding having two sections, one of said sections being disposed adjacent one end of said operate winding, and the other of said sections being disposed adjacent the other end of said operate winding.
Claim 2
Dependent Claim
175 words
A reed relay assembly comprising: an encapsulated reed switch having at least one pair of cooperating magnetic reeds each having a constricted crosssectional area at a point intermediate its ends and the two reeds overlapping each other at one of their ends to form a pair of contacts; an operate winding and a hold winding, both concentrically wound around said switch, said operate winding being adapted to close said contacts in response to the flow of an electrical current therethrough and said hold winding being adapted to maintain said contacts closed in response to the flow of an electrical current therethrough in the absence of said electrical current in said operate winding; said operate winding being centered over the overlapping portions of said reeds and proportioned such that its length is less than the distance between said constricted cross-sectional areas; said hold winding having two sections, one of said sections being disposed adjacent one end of said operate winding, and the other of said sections being disposed adjacent the other end of said operate winding.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |