Patent US3629533A successfully refreshed from Google Patents.
US3629533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc-quenching chamber
Assignee: Individual
•
Filing: 1970-02-12
•
Granted: 1971-12-21
•
Expires: 1990-02-12
Abstract
Abstract The present invention relates to electric switching devices, and more specifically to the arc-quenching chambers of such devices. There is an arc-quenching chamber comprising a de-ion grid composed of spaced plates joined at one end with two straight portions and two helically bent portions lying in parallel planes; forming an airgap between the initial and end of the bent portions, through which any base point of a minor electric arc passes, the airgap being maintained at a minimum.
Inventors
- 👤 Rostislav Sergeevic Kuznestsov
- 👤 Alexandr Grigorievich Uskach
- 👤 Vladimir Grigorievich Kostikov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:09
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/34; H01H9/36; H01H2009/365; H01H2009/367
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
103 words
An electric arc-quenching chamber comprising, a de-ion grid formed of a pair of generally parallel plates, said plates being joined at one end so as to provide a closed neck portion, the free ends of said plates extending into a helix portion within said parallel planes, an airgap being formed between said parallel plates whereby a minor electric arc establishes base points in said airgap between said plates, and a further airgap being formed between the initial and end points of the helix portions of said plates through which the arc base points pass, said further airgap being maintained at a minimum dimension.
Claim 2
Dependent Claim
103 words
An electric arc-quenching chamber comprising, a de-ion grid formed of a pair of generally parallel plates, said plates being joined at one end so as to provide a closed neck portion, the free ends of said plates extending into a helix portion within said parallel planes, an airgap being formed between said parallel plates whereby a minor electric arc establishes base points in said airgap between said plates, and a further airgap being formed between the initial and end points of the helix portions of said plates through which the arc base points pass, said further airgap being maintained at a minimum dimension.
Claim 3
Dependent Claim
25 words
A chamber as claimed in claim 1, wherein the free ends of each of said parallel plates form a helix extending in the same direction.
Claim 4
Dependent Claim
27 words
A chamber as claimed in claim 1, wherein the free end of each of said parallel plates forms a helix extending in opposite directions to each other.
Claim 5
Dependent Claim
40 words
A chamber as claimed in claim 1, wherein the air gaps formed between the initial and end points of each of said helix portions through which the arc base points pass are offset relative to each other in said grid.
Claim 6
Dependent Claim
39 words
A chamber as claimed in claim 2, wherein the airgaps formed between the initial and end points of each of said helix portions through which the arc base points pass are offset relative to each other in said grid.
Claim 7
Dependent Claim
39 words
A chamber as claimed in claim 3, wherein the airgaps formed between the initial and end points of each of said helix portions through which the arc base points pass are offset relative to each other in said grid.
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |