US3906745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic coupling
Assignee: Vulkan Kupplungs und Getriebebau Bernhard Hackforth GmbH and Co KG
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Filing: 1974-03-14
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Granted: 1975-09-23
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Expires: 1994-03-14
Abstract
Abstract An elastic shaft coupling with an annular disk-shaped coupling element is made in part of elastic rubber material. The coupling element transmits the torque between rigid coupling components which are situated concentrically one inside the other. The coupling element includes reinforcement rings embedded in the elastic rubber material in the area of the marginal zones of the coupling element. Further, sector-shaped reinforcement inserts are also embedded in the elastic rubber material at equal distances from each other. The reinforcement inserts comprise a plurality of threads which embrace the reinforcement rings and form radial loops. In accordance with the invention, the reinforcement rings are made of bending-resistant flat rings an which the reinforcement inserts are secured in their position between the radial marginal edges of sector-shaped projections which are outwardly oriented on the outer reinforcement ring and inwardly oriented on the internal reinforcement ring.
Inventors
- 👤 Werner Faust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:11
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/76; F16D3/56; F16D3/58; F16D2300/00; F16D2300/02; F16D2300/021; F16D2300/0212
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
138 words
An elastic shaft coupling comprising a pair of rigid coupling elements disposed in spaced relation and an annular disk-shaped coupling element positioned between and connected to said coupling components, said coupling element arranged to transmit torque between said coupling components, wherein the improvement comprises that said coupling element comprises a first bendingresistant reinforcement ring, a second bending-resistant reinforcement ring laterally enclosing and spaced radially outwardly from said first reinforcement ring, a plurality of reinforcement inserts securing said first and second reinforcement rings together, each of said reinforcement inserts extending radially around said first and second reinforcement rings, each reinforcement insert comprising a plurality of radially extending loops of a member wrapped around said first and second reinforcement riNgs and an elastic material embedding said members and enclosing at least a portion of said first and second reinforcement rings.
Claim 2
Dependent Claim
138 words
An elastic shaft coupling comprising a pair of rigid coupling elements disposed in spaced relation and an annular disk-shaped coupling element positioned between and connected to said coupling components, said coupling element arranged to transmit torque between said coupling components, wherein the improvement comprises that said coupling element comprises a first bendingresistant reinforcement ring, a second bending-resistant reinforcement ring laterally enclosing and spaced radially outwardly from said first reinforcement ring, a plurality of reinforcement inserts securing said first and second reinforcement rings together, each of said reinforcement inserts extending radially around said first and second reinforcement rings, each reinforcement insert comprising a plurality of radially extending loops of a member wrapped around said first and second reinforcement riNgs and an elastic material embedding said members and enclosing at least a portion of said first and second reinforcement rings.
Claim 3
Dependent Claim
81 words
An elastic shaft coupling, as set forth in claim 1, wherein the radially inner edge of said first reinforcement ring and the radially outer edge of said second reinforcement ring each have angularly spaced sector-shaped projections with each of the projections on said first reinforcement ring being in radial alignment with a corresponding projection on said second reinforcement ring, and each of said reinforcement inserts being located between a pair of adjacent sector-shaped projections on said first and second reinforcement rings.
Claim 4
Dependent Claim
25 words
An elastic shaft coupling, as set forth in claim 2, wherein said member wrapped around said first and second reinforcement rings comprises a filament-like member.
Claim 5
Dependent Claim
18 words
An elastic shaft coupling, as set forth in claim 1, wherein said elastic material is a rubber-like material.
Claim 6
Dependent Claim
18 words
An elastic shaft coupling, a set forth in claim 1, wherein said elastic material is a rubber-like material.
Claim 7
Dependent Claim
59 words
An elastic shaft coupling, as set forth in claim 2, wherein apertures are formed in said first and second reinforcement rings in the radially extending portions thereof including said sector-shaped projections and located between adjacent said reinforcement inserts, and a bolt extending through each said aperture for securing one of said reinforcement rings to one of said coupling components.
Claim 8
Dependent Claim
71 words
An elastic shaft coupling, as set forth in claim 3, wherein said filament-like members and the outer surface of said elastic material on two opposite sides of said first and second reinforcement rings have a convex shape, and an annular cavity formed between the radially outer surface of said first reinforcement ring and the radially inner surface of said second reinforcement ring and each said reinforcement insert surrounding the annular cavity.
Claim 9
Dependent Claim
34 words
An elastic shaft coupling, as set forth in claim 7, wherein said annular cavity in the radially extending portions of said coupling element containing said sector-shaped projections is in communication with the ambient air.
Claim 10
Dependent Claim
49 words
An elastic shaft coupling, as set forth in claim 3, wherein the filament-like members are located radially outwardly from the radially inner edge of the sector-shaped projections on said first reinforcement ring and radially inwardly from the radially outer edge of the sector-shaped projections on said second reinforcement ring.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |