Patent US3608883A successfully refreshed from Google Patents.
US3608883A
Expired / Lapsed
US
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Spring
Assignee: STEIRISCHE GUBSTAHLWERKE AG
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Filing: 1969-06-17
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Granted: 1971-09-28
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Expires: 1989-06-17
Abstract
Abstract A heavy-duty spring device with a series of axially arranged rigid outer rings and having resilient split inner rings sandwiched axially therebetween. The inner and outer rings have curved interacting surfaces whereby, upon the application of an axial force, the inner rings are compressed with the axial force being substantially absorbed.
Inventors
- 👤 Maximilian Russold
- 👤 Heribert Sidan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:13
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/34
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
98 words
A spring comprising, a series of rigid outer rings arranged along an application of force axis and each having a slide surface inclined generally toward said axis, and a series of inner resilient split rings sandwiched between said outer rings and having slide surfaces interacting with said slide surfaces of said outer rings, said inner rings being nondeformable in the direction of said application of force axis whereupon said inner rings are circumferentially compressed upon the application of a force along said axis, said slide surfaces of said outer rings being curved to provide a desired spring characteristic.
Claim 2
Dependent Claim
98 words
A spring comprising, a series of rigid outer rings arranged along an application of force axis and each having a slide surface inclined generally toward said axis, and a series of inner resilient split rings sandwiched between said outer rings and having slide surfaces interacting with said slide surfaces of said outer rings, said inner rings being nondeformable in the direction of said application of force axis whereupon said inner rings are circumferentially compressed upon the application of a force along said axis, said slide surfaces of said outer rings being curved to provide a desired spring characteristic.
Claim 3
Dependent Claim
24 words
The spring set forth in claim 1 wherein the outer rings are constructed as bowl-shaped elements and are guided on a central axle shaft.
Claim 4
Dependent Claim
25 words
The spring set forth in claim 1 wherein the resilient inner rings have a uniform cross section whose width is approximately equal to its height.
Claim 5
Dependent Claim
30 words
The spring set forth in claim 1 wherein the outer rings are bowl-shaped at both ends whereby each outer ring interacts with the pair of resilient inner rings adjacent thereto.
Claim 6
Dependent Claim
36 words
The spring set forth in claim 4 wherein a pair of inner split rings are provided between each two adjacent outer rings, each split ring being disposed against a slide surface of the adjacent outer ring.
Claim 7
Dependent Claim
43 words
The spring set forth in claim 4 wherein an inner split ring having a cross section elongated in the axial direction is disposed between each two adjacent outer rings, whereby the split ring engages the slide surfaces of the two adjacent outer rings.
Claim 8
Dependent Claim
25 words
The spring set forth in claim 1 wherein the outer rings have skirt-shaped portions surrounding the resilient inner rings and overlapping the adjacent outer ring.
Claim 9
Dependent Claim
19 words
The spring set forth in claim 1 wherein the adjacent outer rings overlap one another telescopically with guide surfaces.
Claim 10
Dependent Claim
25 words
The spring set forth in claim 1 wherein the resilient inner rings are radially subdivided into two annular parts which lie snugly against one another.
Claim 11
Dependent Claim
26 words
The spring set forth in claim 9 wherein the inner annular part consists of a material of higher limit of elasticity than the outer annular part.
Claim 12
Dependent Claim
36 words
The spring set forth in claim 9 wherein the inner annular part and the outer annular part lie against one another with profiled annular surfaces whereby same are secured against axial displacement relatively to one another.
Claim 13
Dependent Claim
35 words
The spring set forth in claim 1 wherein the spring travel is limited by engagement of the outer rings against one another, the stop surfaces preferably lying at the outer edge of the outer rings.
References Cited (Backward Citations)
US1816325A
Cited
US3493221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |