US3953699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastening arrangement for the switching mechanism cage of an electric switching apparatus
Assignee: Siemens AG
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Filing: 1974-09-12
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Granted: 1976-04-27
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Expires: 1994-09-12
Abstract
Abstract An electric switching apparatus of the type including a base fabricated of electrical insulation material and a switching mechanism cage which includes at least two side plates. Outwardly extending projection members are disposed at opposite ends of at least one edge of each of the side plates, and each include a hook portion at the end thereof which extends outwardly from the lateral edges of the plates. The apparatus base includes recesses extending therethrough which receive the projection members, and the hook portions project therefrom when the projection members are disposed in the recesses. Spring clips are disposed between the hook portions of the plate projection members and the apparatus base for fastening the cage side plates to the base.
Inventors
- 👤 Karl-Heinz Scheibel
- 👤 Nikolaus Miheilowitsch
- 👤 Heinz Goerndt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:05
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/015; H02B1/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
109 words
In an electric switch comprising a base fabricated of electrical insulation material and a switching mechanism cage including at least two side plates fastened to said base, the improvement comprising outwardly extending projection members, disposed at opposite ends of at least one edge of each of said side plates, and each including a hook portion at the end thereof extending outwardly from the lateral edges of said plates, said base including recesses extending therethrough receiving said projection members and said hook portions projecting from said base, and further comprising spring means, disposed between said base and said hook portions of said projection members, fastening said plates to said base.
Claim 2
Dependent Claim
109 words
In an electric switch comprising a base fabricated of electrical insulation material and a switching mechanism cage including at least two side plates fastened to said base, the improvement comprising outwardly extending projection members, disposed at opposite ends of at least one edge of each of said side plates, and each including a hook portion at the end thereof extending outwardly from the lateral edges of said plates, said base including recesses extending therethrough receiving said projection members and said hook portions projecting from said base, and further comprising spring means, disposed between said base and said hook portions of said projection members, fastening said plates to said base.
Claim 3
Dependent Claim
80 words
The apparatus recited in claim 1, wherein said plates, and said projection members and hook portions thereof, are disposed in parallel relationship, and said spring means engages said hook portions of both of said plates at one end thereof, said spring means also engaging said base at a contact point between said plates so that said contact points between said base and said spring means and said plates and said spring means, respectively, form the corners of an equilateral triangle.
Claim 4
Dependent Claim
13 words
The apparatus recited in claim 2, wherein said spring means comprise spring clips.
Claim 5
Dependent Claim
56 words
The apparatus recited in claim 3, wherein said projection members and hook portions are integrally formed with said side plates and are disposed in the same plane therewith, and wherein said spring clips are disposed between said base and said hook portions in a position which is transverse to the longitudinal axes of said side plates.
Claim 6
Dependent Claim
42 words
The apparatus recited in claim 4, wherein the edges of said hook portions in engagement with said spring clips are inclined upwardly and outwardly from said side plates at an angle of about 10° with respect to the plane of said base.
Claim 7
Dependent Claim
22 words
The apparatus recited in claim 4, wherein said base further comprises lateral recesses disposed adjacent said plates receiving said spring clips therein.
Claim 8
Dependent Claim
26 words
The apparatus recited in claim 4, wherein said spring clips each further comprise a downwardly extending member interposed between said hook portions of said projection members.
Claim 9
Dependent Claim
53 words
The apparatus recited in claim 7, wherein said spring clips are of curved configuration and include a pair of leg portions disposed in approximate parallel relationship, at least one of said leg portions including an abutment member disposed on an inner edge thereof between said leg portions for limiting the inward movement thereof.
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) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |