US3868100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring element
Assignee: LuK Lamellen und Kupplungsbau GmbH
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Filing: 1973-06-20
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Granted: 1975-02-25
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Expires: 1993-06-20
Abstract
Abstract A spring element, particularly a toggle spring element, is provided in which the positive and negative segments of the characteristic curve may be of equal magnitude and uniform shape. Two conically arranged cup springs, the characteristic curve of each of which has a rising segment and a falling segment, are clamped together in opposition to each other and at least approximately parallel to each other by a pair of seats which engage the cup springs in the same diameter.
Inventors
- 👤 Paul Maucher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:34
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/32; F16D; F16D13/00; F16D13/58; F16D13/583
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
Spring element comprising in combination at least two conically formed cup springs, the characteristic curve of which has a rising segment and a falling segment, and a pair of seat means engaging the cup springs on both sides thereof at the same diameter for clamping said cup springs together at least substantially parallel to each other and with oppositely extending conicity, said cup springs being tippable together and in substantially parallel relationship with each other in two contrary directions about said pair of seat means.
Claim 2
Dependent Claim
85 words
Spring element comprising in combination at least two conically formed cup springs, the characteristic curve of which has a rising segment and a falling segment, and a pair of seat means engaging the cup springs on both sides thereof at the same diameter for clamping said cup springs together at least substantially parallel to each other and with oppositely extending conicity, said cup springs being tippable together and in substantially parallel relationship with each other in two contrary directions about said pair of seat means.
Claim 3
Dependent Claim
34 words
A spring element according to claim 1, in which the ratio ho: s is greater than 1.8, in which ho and s are, respectively, the inner height and the thickness of the cup spring.
Claim 4
Dependent Claim
93 words
Spring element comprising in combination at least two conically formed cup springs, the characteristic curve of which has a rising segment and a falling segment, and a pair of seat means engaging the cup springs on both sides thereof at the same diameter for clamping said cup springs together at least substantially parallel to each other and with oppositely extending conicity, said cup springs being tippable about said seat means together and in substantially parallel relationship with each other out of an unstable position thereof into two contrary positions with contrary force directions.
Claim 5
Dependent Claim
93 words
Spring element comprising in combination at least two conically formed cup springs, the characteristic curve of which has a rising segment and a falling segment, and a pair of seat means engaging the cup springs on both sides thereof at the same diameter for clamping said cup springs together at least substantially parallel to each other and with oppositely extending conicity, said cup springs being tippable about said seat means together and in substantially parallel relationship with each other out of an unstable position thereof into two contrary positions with contrary force directions.
References Cited (Backward Citations)
US2482449A
Cited
US3519096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |