US3837178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible shaft coupling
Assignee: Vulkan Kupplungs und Getriebebau Bernhard Hackforth GmbH and Co KG
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Filing: 1973-03-19
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Granted: 1974-09-24
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Expires: 1993-03-19
Abstract
Abstract A flexible shaft coupling of the kind comprising a hub part and a co-axial surrounding ring part connected together by a flexible annular disc which is reinforced by one or more reinforcing inserts of textile or synthetic yarn or of wire the inner and outer edges of which are wrapped around stiffening rings near the inner and outer peripheries of the disc has the outer stiffening ring, and preferably the inner stiffening ring also, formed of strip-like material, the stiffening ring or rings thus being of flattened cross-section with the greater lateral dimension lying in the plane of the disc, so that the ring has a greater bending stiffness in a direction radially of the disc than in a direction axially of the disc. Preferably the stiffening rings are provided with axial holes and the inner and outer peripheral portions of the disc are clamped to the hub part and the surrounding ring part by means of clamping rings and clamping bolts which pass through holes in the clamping rings and through the axial holes in the flattened stiffening rings.
Inventors
- 👤 B Hackforth
- 👤 J Hackforth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:28
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/76; F16D3/78; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7061
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
146 words
In a flexible shaft coupling comprising a hub part a ring part coaxially surrounding said hub part and a flexible annular disc interconnecting said hub part and said ring part for torque transmission from one of said parts to the other of said parts and means reinforcing said flexible annular disc, said reinforcing means including at least one reinforcing insert thread of yarn or wire, an outer metal stiffening ring embedded in said disc near the outer periphery thereof and an inner metal stiffening ring embedded in said disc near the inner periphery thereof, peripheral portions of said thread being wrapped round said stiffening rings, the improvement wherein said outer stiffening ring is of flattened cross-section with its greater lateral dimension lying in the plane of said disc, said outer ring having greater bending stiffness in a radial direction thereof than in an axial direction thereof.
Claim 2
Dependent Claim
146 words
In a flexible shaft coupling comprising a hub part a ring part coaxially surrounding said hub part and a flexible annular disc interconnecting said hub part and said ring part for torque transmission from one of said parts to the other of said parts and means reinforcing said flexible annular disc, said reinforcing means including at least one reinforcing insert thread of yarn or wire, an outer metal stiffening ring embedded in said disc near the outer periphery thereof and an inner metal stiffening ring embedded in said disc near the inner periphery thereof, peripheral portions of said thread being wrapped round said stiffening rings, the improvement wherein said outer stiffening ring is of flattened cross-section with its greater lateral dimension lying in the plane of said disc, said outer ring having greater bending stiffness in a radial direction thereof than in an axial direction thereof.
Claim 3
Dependent Claim
46 words
A coupling as claimed in claim 1, wherein said inner stiffening ring is of flattened cross-section with its greater lateral dimension lying in the plane of said disc, said inner ring having greater bending stiffness in a radial direction thereof than in an axial direction thereof.
Claim 4
Dependent Claim
99 words
A coupling as claimed in claim 1, wherein said outer stiffening ring has axial holes therethrough said surrounding ring has axial holes therethrough in register with said holes in said outer stiffening ring and further comprising a clamping ring having axial holes therethrough in register with said holes in said outer Stiffening ring and said surrounding ring part and a plurality of clamping bolts passing through registering holes in said clamping ring, said outer stiffening ring and said surrounding ring part to clamp an outer peripheral part of said disc between said outer ring part and said clamping ring.
Claim 5
Dependent Claim
29 words
A coupling as claimed in claim 3, wherein said surrounding ring part and said clamping ring have flat radial surfaces in contact with said peripheral part of said disc.
Claim 6
Dependent Claim
56 words
A coupling as claimed in claim 1, wherein said insert at the outer peripheral portion thereof is wrapped several times round said outer stiffening ring whereby parts of said yarns or wires of said insert extending between said outer and said inner stiffening rings cross over underlying parts of the same or adjacent yarns or wires.
Claim 7
Dependent Claim
44 words
A coupling as claimed in claim 5, wherein said disc is secured against rotation relative to said surrounding ring part by being a tight keying fit within said ring part and is secured against axial movement relative to said surrounding ring part by friction.
Claim 8
Dependent Claim
42 words
A coupling as claimed in claim 5, wherein said disc is secured against rotation relative to said surrounding ring part by being a tight keying fit within said ring part and is guided for axial sliding movement relative to said ring part.
Claim 9
Dependent Claim
80 words
A coupling as claimed in claim 3, wherein said disc includes rubber-elastic material extending on both faces of said stiffening ring of flattened cross-section and over both faces of said outer peripheral portion of said insert where said insert is wrapped around said stiffening ring, said rubber-elastic material adjacent said clamping bolts being in the form of a thin, substantially non-cushioning coating which does not flow and is not expelled by the clamping forces generated on tightening said clamping bolts.
Claim 10
Dependent Claim
163 words
In a flexible shaft coupling comprising a hub part, a ring part coaxially surrounding said hub part, and a flexible annular disc interconnecting said hub part and said ring part for torque transmission from one of said parts to the other of said parts, and means reinforcing said flexible annular disc, said reinforcing means including at least one reinforcing insert thread of yarn or wire, an outer metal stiffening ring embedded in said disc near the outer periphery thereof and an inner metal stiffening ring embedded in said disc near the inner periphery thereof, peripheral portions of said thread being wrapped round said stiffening rings, the improvement wherein said outer stiffening ring is of flattened cross-section with its greater lateral dimension lying in the plane of said disc, said outer ring having a bending stiffness in a radial direction thereof, such that distortion of the outer ring by tension exerted thereon by the reinforcing thread when the coupling is in use is avoided.
Claim 11
Dependent Claim
163 words
In a flexible shaft coupling comprising a hub part, a ring part coaxially surrounding said hub part, and a flexible annular disc interconnecting said hub part and said ring part for torque transmission from one of said parts to the other of said parts, and means reinforcing said flexible annular disc, said reinforcing means including at least one reinforcing insert thread of yarn or wire, an outer metal stiffening ring embedded in said disc near the outer periphery thereof and an inner metal stiffening ring embedded in said disc near the inner periphery thereof, peripheral portions of said thread being wrapped round said stiffening rings, the improvement wherein said outer stiffening ring is of flattened cross-section with its greater lateral dimension lying in the plane of said disc, said outer ring having a bending stiffness in a radial direction thereof, such that distortion of the outer ring by tension exerted thereon by the reinforcing thread when the coupling is in use is avoided.
Claim 12
Dependent Claim
63 words
A coupling as claimed in claim 9, wherein said inner stiffening ring is of flattened cross-section with its greater lateral dimension lying in the plane of said disc, said inner ring having a bending stiffness in a radial direction thereof such as distortion of the outer ring by tension exerted thereon by the reinforcing thread when the coupling is in use is avoided.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |