US3578928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring mounted arc deflector
Assignee: Leach Corp
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Filing: 1968-11-22
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Granted: 1971-05-18
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Expires: 1988-11-22
Abstract
Abstract An improved arc deflector having a backing plate, a plurality of spaced-apart walls, and a recessed partition, which members define compartments having an end wall and opposed sidewalls. A set of contacts of an electrical relay are enclosed within each compartment, the walls acting to prevent arcing from one set of contacts to another. A retaining spring seats on a shelf of the backing plate and biases the compartmented enclosure against the relay container to hold the arc deflector immobile during use.
Inventors
- 👤 John C Schuessler
- 👤 Roman J Capol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:17
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
194 words
An electrical switching assembly comprising a base member through which electrical leads pass for external connection, stationary contacts mounted on said leads, a cover which fits over the base and is secured thereto to form a fully enclosed space for the contacts, a shield member of dielectric material having a backing plate, a plurality of spaced-apart parallel walls extending from the backing plate, the two outermost walls and the backing plate having one edge thereof lying in a common plane and a partition extending between the walls and joined to the backing plate, the partition being positioned parallel to but spaced slightly from said plane, and a spring member secured to the base adjacent the cover, the shield member being positioned within said space with said one edge of each of the walls and the backing plate lying in said plane slidably engaging the base, the partition passing over the spring member and the spring member engaging the backing plate in the space between the partition and the base to urge the backing plate against the cover, the partition extending over the spring member to shield the contacts from the spring member and base.
Claim 2
Dependent Claim
194 words
An electrical switching assembly comprising a base member through which electrical leads pass for external connection, stationary contacts mounted on said leads, a cover which fits over the base and is secured thereto to form a fully enclosed space for the contacts, a shield member of dielectric material having a backing plate, a plurality of spaced-apart parallel walls extending from the backing plate, the two outermost walls and the backing plate having one edge thereof lying in a common plane and a partition extending between the walls and joined to the backing plate, the partition being positioned parallel to but spaced slightly from said plane, and a spring member secured to the base adjacent the cover, the shield member being positioned within said space with said one edge of each of the walls and the backing plate lying in said plane slidably engaging the base, the partition passing over the spring member and the spring member engaging the backing plate in the space between the partition and the base to urge the backing plate against the cover, the partition extending over the spring member to shield the contacts from the spring member and base.
Claim 3
Dependent Claim
56 words
The assembly of claim 1 wherein the partition is formed with slots extending between each pair of adjoined walls of the shield member, the slots being open at the edge of the partition remote from the backing plate, the slots receiving the electrical leads extending through the base when the shield member is in operative position.
Claim 4
Dependent Claim
46 words
The assembly of claim 2 wherein the stationary contacts are offset from the electrical leads in a direction toward the backing plate and the cover, the contacts extending beyond the open slots toward the backing plate so that the partition shields the contacts from the base.
References Cited (Backward Citations)
CH324517A
Cited
DE1202864B
Cited
US3198915A
Cited
FR1350127A
Cited
US3295078A
Cited
US3451019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |