US4170395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact for the base portions of low voltage-heavy duty safety fuses
Assignee: Siemens AG
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Filing: 1978-06-29
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Granted: 1979-10-09
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Expires: 1998-06-29
Abstract
Abstract A contact having essentially the configuration of a planar strip angled to one side thereof. In the lengthier non-angled region, the strip is provided with a longitudinal slit and flanged at its end portion. The inwardly located slit end is widened in a circular shape. An omega-shaped compression spring has the ends thereof engaged in recesses arranged in said flanged portion and proximate its ends is provided with outwardly extending lugs in its plane of extension.
Inventors
- 👤 Heinz Sommerfeldt
- 👤 Karl Kuklies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:59
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/12; H01H1/36; H01H1/42
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
137 words
In a contact for the base portions of low voltage-heavy duty safety fuses and for the receipt of blade contacts thereof; and a compression spring for supporting said contact; the improvement comprising: said contact having the configuration of a planar strip having one end angled to one side thereof to form the base of an L shape and having a non-angled leg portion lengthier than said base; a longitudinal slit being formed in said non-angled leg portion of the strip, said strip being flanged at its edge extending along said slit, the inwardly located slit end being expanded to form a circularly-shaped aperture; said compression spring being omega-shaped and having ends engaging in recesses arranged in the flanged region of said strip, and said spring including outwardly extending lugs proximate its ends in its plane of extension.
Claim 2
Dependent Claim
137 words
In a contact for the base portions of low voltage-heavy duty safety fuses and for the receipt of blade contacts thereof; and a compression spring for supporting said contact; the improvement comprising: said contact having the configuration of a planar strip having one end angled to one side thereof to form the base of an L shape and having a non-angled leg portion lengthier than said base; a longitudinal slit being formed in said non-angled leg portion of the strip, said strip being flanged at its edge extending along said slit, the inwardly located slit end being expanded to form a circularly-shaped aperture; said compression spring being omega-shaped and having ends engaging in recesses arranged in the flanged region of said strip, and said spring including outwardly extending lugs proximate its ends in its plane of extension.
Claim 3
Dependent Claim
29 words
A contact as claimed in claim 1, said strip having a transitional portion extending towards the flanged region thereof, said transitional portion having the configuration of a rounded slit.
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) | 1982-10-08 | 1983-04-09 | 1983-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-08 | 1987-04-09 | 1987-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-08 | 1991-04-09 | 1991-10-09 | $7700.00 | Window Closed / Lapsed |